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MAX16088XS44F+T - 1.2V Voltage Supervisor, SC70-4 | Maxim Integrated
The Maxim Integrated (Analog Devices) MAX16088XS44F+T is an ultra-low-power, single-channel voltage supervisor (reset IC) featuring a factory-trimmed 4.375V threshold in a 4-pin SC70 package. Designed to monitor microprocessor (µP) and ASIC supply rails, this supervisor asserts a reset signal whenever the monitored VCC falls below the threshold, holding it asserted for a minimum timeout period after VCC recovers - preventing code-execution errors during brownouts, power-up, and power-down events. A voltage supervisor is a type of power management integrated circuit (PMIC) that belongs to the supervisors-and-reset IC category. Within the broader system hierarchy, supervisors fall under power management ICs - semiconductors that regulate, monitor, and protect voltage rails. Supervisors specifically ensure deterministic processor behavior by forcing a known reset state whenever the supply rail becomes unreliable. This is critical for embedded systems where uncontrolled code execution during brownouts can corrupt flash memory, registers, or cause mechanical/communications faults. Key features of the MAX16088XS44F+T include a 4.375V ±1.5% threshold accuracy, an open-drain active-low RESET output, an ultra-low 0.7 µA (typical) supply current that makes it ideal for battery-powered applications, and a 200 ms minimum reset timeout. The SC70-4 package occupies only ~2.0 mm × 2.1 mm of PCB area - one of the smallest footprints in the supervisor category - and operates over a -40°C to +85°C extended industrial temperature range. The wide VCC supply range of 1.0V to 5.5V allows monitoring of common 3.3V, 3.0V, 2.5V, 1.8V, and 1.2V rails from the same part. Architecturally, the MAX16088XS44F+T uses a precision bandgap reference and comparator core to compare VCC against the trimmed threshold, combined with an internal timing generator for the reset pulse-width. The design avoids the need for an external timing capacitor - unlike many legacy supervisors such as the MAX809 - by integrating a fixed-factory timeout. Typical applications include battery-powered IoT sensor nodes, wearable health monitors, portable consumer electronics, MCU/SoC rail monitoring, energy harvesting nodes, and industrial sensor endpoints. The low quiescent current (0.7 µA typ.) makes it especially suitable where sleep-mode drain dominates system budgets. Designers should choose a pull-up resistor on RESET (open-drain) sized appropriately for the load capacitance to meet reset rise-time requirements, and verify that VCC ramp time is faster than the device's minimum VCC slew specification. For more margin, consider the MAX16087 variant family with adjustable thresholds. This page synthesizes distributor pricing, cross-brand substitutes, application notes, and design guidance for the MAX16088XS44F+T - information typically scattered across multiple datasheets and distributor pages.
MAX1631EAI+T - Dual Buck PWM Controller 28-SSOP | Maxim
The Maxim Integrated MAX1631EAI+T (now under Analog Devices) is a dual-output, current-mode, step-down DC-DC switching controller IC for notebook and battery-powered systems. Housed in a 28-pin SSOP package, the device operates over a 4.2V to 30V input range and provides two adjustable outputs (selectable to 3.3V and 5V fixed via preset pins) at up to 96% efficiency, with on-chip MOSFET drivers. The switching frequency is programmable from 200 kHz to 300 kHz, and the duty cycle reaches 99%, allowing low-dropout operation on the high-side rail. What is a step-down DC-DC controller? A step-down (buck) controller is a switch-mode power supply IC that regulates an output voltage lower than the input by rapidly switching an external power MOSFET and storing energy in an external inductor. The MAX1631 family belongs to the hierarchy of voltage regulator -> switching regulator -> step-down controller -> PWM current-mode controller -> power management IC, and is widely used where high efficiency at varying battery voltages is required. Key features include on-board power-up sequencing, power-good signaling with programmable delay, digital soft-start to limit inrush current, secondary winding control for auxiliary outputs, low-dropout (LDO) circuitry, and internal frequency-compensation networks. The MAX1631EAI+T supports dual adjustable outputs that can be preset to 3.3V and 5V, making it well-suited for powering system logic, memory, and I/O rails from a single battery or adapter source. The architecture combines current-mode PWM control with an adaptive idle mode that skips switching cycles at light loads, sustaining high efficiency across the entire load range. Internal drivers can directly drive external N-channel MOSFETs without external gate drivers, simplifying the BOM. Housed in a 28-SSOP package (5.30 mm body width, 0.65 mm pitch), the part dissipates moderate thermal load at typical notebook power levels. Typical applications include notebook computer main supplies (CPU core + I/O), battery-powered portable instruments, point-of-load regulators downstream of an AC adapter, and embedded systems requiring 3.3V/5V dual rails from a single 12V or 19V bus. The on-board power-good and sequencing features target multi-rail architectures where CPU, chipset, and peripheral rails must come up in a defined order. When designing with this device, careful inductor selection and output capacitor ESR are critical for stability. The 28-SSOP package has a higher thermal resistance than QFN equivalents, so copper area on the PCB beneath the exposed pad (or wide traces on the SSOP leads) is recommended for sustained full-load operation at high VIN. A well-designed snubber across the external switching MOSFET reduces ringing and EMI. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone, giving engineers a single source for selecting, sourcing, and validating the MAX1631EAI+T in new and legacy designs.
MAX17262REWL+T - 5.2µA 1-Cell Fuel Gauge with ModelGauge m5 | ADI
The Analog Devices (formerly Maxim Integrated) MAX17262REWL+T is an ultra-low-power 1-cell fuel-gauge IC implementing the proprietary ModelGauge m5 EZ algorithm, supporting both LiFePO4 and Li-ion battery chemistries in a compact 9-pin WLP (1.47 mm × 1.45 mm) package. Headline parameters include 5.2 µA quiescent current, internal current sensing (no external sense resistor required), and best-in-class accuracy for battery capacities from 30 mAhr to 6 Ahr. What is a fuel-gauge IC? A fuel-gauge IC is a battery-management semiconductor that continuously estimates remaining state-of-charge (SOC), state-of-health (SOH), time-to-empty, and runtime for a rechargeable cell. It belongs to the broader hierarchy of battery management ICs → power management ICs → analog mixed-signal semiconductors. The MAX17262 family specifically uses ModelGauge m5 EZ, which combines the short-term accuracy of a coulomb counter with the long-term stability of a voltage-based ModelGauge algorithm, while eliminating battery characterization requirements through EZ configuration. Key features include ±1% SOC accuracy over the full operating range, I2C/SMBus-compatible interface, on-chip temperature sensing, and built-in battery insertion detection. The internal current sense eliminates the bulky external sense resistor that older coulomb-counter designs required, reducing BOM cost and PCB area while improving noise immunity. The device also includes SHA-256 authentication support for battery-pack security applications requiring anti-counterfeit protection. Technically, the MAX17262 samples battery voltage, current, and temperature at a low duty cycle to minimize quiescent current to 5.2 µA, enabling extended shelf life and runtime in always-on battery applications. The ModelGauge m5 algorithm fuses periodic OCV (open-circuit-voltage) measurements with continuous coulomb-count tracking, providing accurate SOC reporting even during high-dynamic-load conditions where pure coulomb counters drift or pure voltage-based gauges become unreliable. Typical applications include wearables (smartwatches, fitness bands, hearables), IoT sensor nodes, Bluetooth trackers, TWS earbuds charging cases, single-cell medical devices, and ultra-thin portable electronics where PCB real estate is constrained. The 9-WLP package occupies only 2.13 mm², making it suitable for the smallest form-factor designs. When designing with the MAX17262, pay attention to PCB layout for the WLP package — the WLP requires NSMD pads and a clean ground plane under the die for accurate temperature sensing. The I2C lines require 4.7 kΩ pull-ups to the host logic level, and the BAT pin must connect to the cell positive terminal through a low-impedance trace. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the standalone manufacturer datasheet, with cross-validated parameters from Analog Devices, DigiKey, Mouser, and LCSC listings.
MAX17502FATB+T - 60V, 1A Sync Step-Down DC-DC | Maxim/ADI
The Maxim Integrated (Analog Devices) MAX17502FATB+T is a high-efficiency, high-voltage, synchronous step-down DC-DC converter with integrated MOSFETs that delivers up to 1 A of load current from a 4.5 V to 60 V input rail and regulates a fixed 5 V output in a 10-pin TDFN exposed-pad (TDFN-EP) package. Housed in a compact 3 mm x 2 mm TDFN-EP footprint, it operates at a 600 kHz switching frequency and uses peak-current-mode control with internal compensation, eliminating the need for an external compensation network. The device maintains ±1.7% output accuracy over the full -40 °C to +125 °C temperature range. A synchronous buck (step-down) DC-DC converter is a switching regulator that uses actively controlled high-side and low-side MOSFETs to convert a higher DC input voltage into a lower, regulated DC output voltage with significantly higher efficiency than a linear regulator. The MAX17502 belongs to the step-down regulator -> DC-DC converter -> power management IC -> semiconductor hierarchy, and is optimized for harsh industrial and automotive environments where wide input transients are common. Key features include a wide 4.5 V to 60 V input range, integrated 180 mΩ high-side and 120 mΩ low-side MOSFETs, internal loop compensation, programmable soft-start, and a power-good (PGOOD) output for rail sequencing. The fixed 5 V output variant eliminates external feedback resistors, while the adjustable variant covers 0.9 V to 92% of VIN. Shutdown current drops below 1 µA for energy-saving standby modes. The internal architecture combines a peak-current-mode controller with a precision reference and adaptive dead-time control, achieving up to 92% efficiency. The 600 kHz switching node allows the use of small ceramic input and output capacitors while keeping fundamental switching noise outside the AM band, which simplifies EMI filtering. Typical applications include industrial 24 V and 48 V bus systems, point-of-load regulators after a PFC stage, distributed supply rails in factory automation, battery-powered portable instruments, HVAC controllers, and eMobility accessories. Designers choose this part when they need a tiny, fully synchronous 1 A regulator that tolerates automotive load-dump events. When designing with this part, keep the input capacitor loop and the high-side MOSFET loop as short as possible to minimize switching-node ringing, and connect the exposed pad to a continuous ground copper plane to keep junction temperature within the 150 °C limit. For high VIN-to-VOUT ratios, derate output current to stay within the SOA shown in the manufacturer datasheet. This page synthesizes distributor pricing, drop-in same-package alternatives, and practical PCB design notes that go beyond what the manufacturer datasheet alone provides, making component evaluation and sourcing faster for engineers.
MAX17525ATP+ - 60V Adjustable Power Limiter | Analog Devices
The Analog Devices (formerly Maxim Integrated) MAX17525ATP+ is a high-accuracy, adjustable overvoltage, undervoltage, and overcurrent protection IC housed in a 20-pin TQFN (5x5 mm) package. It operates from a 5.5 V to 60 V input supply, draws 1.4 mA of quiescent supply current, and supports operating temperatures from -40 C to +125 C, making it suitable for industrial, automotive, and telecom systems exposed to wide input transients. A power limiter, also called an adjustable overcurrent/overvoltage protector, is a category of power management IC that guards downstream circuitry by interrupting or limiting current flow during fault events such as input overvoltage, reverse polarity, or excessive load current. The MAX17525 belongs to the Olympus protection family, sits within the broader hierarchy of supervisors/reset & protection ICs -> power management -> semiconductor, and integrates three independent protection thresholds in a single chip that historically required multiple discrete comparators and MOSFETs. Key features include internal overvoltage (OV) and undervoltage (UV) comparators with adjustable thresholds, an accurate current-limit comparator for use with an optional external p-channel MOSFET, reverse-voltage blocking with the same pMOSFET, and a FLAG output that asserts when any protection event occurs. The 20-pin TQFN package provides a small footprint for space-constrained boards while offering a thermal pad to dissipate heat during sustained current-limit events. The internal architecture combines a precision bandgap reference, three independent comparator channels, and a charge-pump gate driver for the external pMOSFET. By sourcing a regulated gate pull-up, the charge pump keeps the pFET fully enhanced across the full 5.5 V to 60 V input range, which minimizes R_DS(on) variation and ensures predictable current-limit behavior even at high line voltages. Typical applications include 24 V industrial bus protection, 48 V telecom rectifier protection, automotive load-dump survival, USB Type-C / PD VBUS protection, and battery hot-plug circuits. In each case the MAX17525 replaces discrete TVS, fuse, and hot-swap designs with a single IC and one external pMOSFET. When designing with this part, select the external pMOSFET voltage rating to cover the worst-case V_IN plus reverse polarity case (datasheet recommends 60 V or 100 V rated parts). The OV/UV/ILIM resistor dividers should use 1% tolerance to maintain accurate trip thresholds across the full -40 C to +125 C range. This page synthesizes distributor pricing, drop-in alternatives, and application guidance not found in the manufacturer datasheet alone, helping engineers shorten BOM evaluation cycles and avoid common pMOSFET selection pitfalls.
MAX17525ATP+T - Adjustable OV/UV/OC Power Limiter TQFN-20 | Analog Devices
The Analog Devices (formerly Maxim Integrated) MAX17525ATP+T is a high-accuracy, adjustable power limiter that provides overvoltage (OV), undervoltage (UV), and overcurrent (OC) protection in a 20-pin TQFN (5 mm x 5 mm) package with exposed pad. It guards downstream circuitry against positive overvoltage, reverse-voltage, and overcurrent faults, with reverse-current blocking and overtemperature shutdown. Used together with a single optional external p-channel MOSFET, the MAX17525 delivers a complete hot-swap / eFuse-style system protection solution for 1.8 V to 40 V rails. A power limiter (also called an adjustable circuit breaker, hot-swap controller, or eFuse IC) sits between an upstream supply and a downstream load, combining the functions of a fuse, a switch, and a supervisor. It belongs to the broader power-management IC family, sitting hierarchically below voltage regulators and supervisors in a typical system power tree. Power limiters add active, resettable, programmable protection that a simple fuse or PTC cannot match, which is why they are widely adopted in USB, PoE, industrial 24 V, and battery-port applications. Key specifications include an adjustable OV/UV window, an adjustable current-limit threshold, internal charge-pump driven pMOSFET gate control, reverse-current blocking, thermal shutdown, and a fault flag output. The MAX17525 operates across a -40 C to +125 C junction temperature range and is qualified to the standard industrial grade. Its small 5 mm x 5 mm TQFN footprint minimizes PCB area, and the exposed pad allows direct heat removal from the internal charge pump and current-sense path. The internal architecture combines a precision bandgap reference, two comparators for OV and UV thresholds, a current-sense amplifier for OC detection, and a charge pump that drives the gate of an external pMOSFET above VIN. Reverse-current blocking is implemented by actively pulling the gate up when VOUT exceeds VIN, turning off the external FET. An internal thermal sensor trips the fault flag and disables the pass element when junction temperature exceeds the safe limit. Typical applications include USB Type-C port protection, 12 V/24 V industrial sensor and PLC rails, PoE powered-device ports, hot-swap boards, battery-charging input protection, and any system that must survive a mis-wired, reverse-polarity, or short-circuit input. In each case the device replaces discrete TVS, PTC, Schottky, and supervisor circuitry with a single, smaller, configurable IC. When designing with the MAX17525, select the external pMOSFET so that its VDS and SOA ratings comfortably exceed the system VIN maximum and the worst-case load step. Choose input and output ceramic capacitors (typically 1 uF to 10 uF X7R) to handle the inrush profile programmed by the SS pin, and lay out the sense path as a Kelvin connection to the FET source for accurate current limiting. This page synthesizes distributor pricing, drop-in same-package alternatives, and practical protection design notes that are not consolidated in the manufacturer datasheet alone.
MAX17613BATP+ - 60V, 3A OV/UV Protector | Analog Devices
The Analog Devices (formerly Maxim Integrated) MAX17613BATP+ is an adjustable overvoltage (OV) and overcurrent (OC) protection IC that operates from 4.5V to 60V and delivers up to 3A of continuous load current through a low 130 mOhm (typical) internal MOSFET. Housed in a 20-pin TQFN (4x4 mm) package with an exposed pad, this B-variant member of the Olympus protection IC family integrates adjustable OV/UV thresholds, programmable current limit, and reverse-current blocking in a single IC. A protection IC such as the MAX17613B belongs to the broader category of specialized power-management semiconductors. System-protection ICs sit between an upstream DC rail (USB, industrial 24V, battery, or PoE) and a downstream load, and their job is to disconnect the load within microseconds when the input voltage, current, or polarity strays outside a safe window. Within that family, the MAX17613B is the OV/UV-and-OC variant (the 'B' suffix) of the Olympus trio, sharing the same TQFN-20 footprint with the MAX17613A (OV/OC only) and MAX17613C (OV/UV/OC plus reverse-current blocking). Key features include a 4.5V-to-60V operating input range, a -65V negative-fault tolerance, internal 130 mOhm RON FET, adjustable OV/UV/OC thresholds via external resistors, and a fault FLAG output. The IC also supports parallel-mode current sharing for loads above 3A and provides thermal-shutdown protection. Quiescent current is typically 480 uA in normal operation, dropping to a few microamps in shutdown. The internal architecture combines a charge pump driving an N-channel MOSFET, a precision bandgap reference for the OV/UV comparators, and a current-sense amplifier that monitors the FET drain-to-source voltage for the OC loop. The device also integrates reverse-current blocking, which prevents current backflow into the source when the input collapses - a critical feature for USB-C and battery-powered systems. Typical applications include industrial PLC I/O protection, USB-C source power delivery, eMobility/EV auxiliary rails, 24V factory automation, battery-pack protection, and any 12V/24V/48V system that must survive load-dump transients. The compact 4x4 mm package and high integration reduce BOM cost compared with discrete TVS+fuse+MOSFET solutions. When designing with this device, derate output current based on PCB thermal performance; the TQFN-20 exposed pad must be soldered to a sufficient copper pour. Use Kelvin-sense layout at the OUT pin to keep OC threshold accuracy within +/-10 percent across temperature. This page synthesizes distributor pricing, drop-in alternative analysis, and practical PCB thermal notes that go beyond the manufacturer datasheet, helping engineers select and qualify the MAX17613BATP+ faster.
MAX17633BATP+T - 36V, 3.5A Synchronous Buck Converter | Analog Devices
The MAX17633BATP+T is a high-efficiency, high-voltage, synchronous step-down DC-DC converter from Analog Devices, part of the Himalaya series. It operates over an input voltage range of 4.5V to 36V and delivers up to 3.5A of output current. The device integrates MOSFETs and is available in a 20-WFQFN exposed pad package, making it suitable for space-constrained industrial and telecom power supplies. A synchronous buck converter is a type of DC-DC switching regulator that steps down a higher input voltage to a lower output voltage with high efficiency. It uses two MOSFETs (high-side and low-side) to alternately connect the inductor to the input and ground, minimizing conduction losses compared to asynchronous designs. This topology is essential in power management systems where efficiency and thermal performance are critical, such as in base stations, distributed power architectures, and point-of-load (POL) converters. Key features of the MAX17633BATP+T include an adjustable output voltage from 0.9V, a MODE/SYNC pin for selecting PWM, PFM, or DCM control schemes, adjustable input undervoltage lockout (UVLO), adjustable soft-start, open-drain RESET output, and external clock synchronization. The switching frequency is programmable from 380kHz to 2.45MHz, allowing designers to optimize efficiency versus component size. The device also offers high efficiency across a wide load range, reducing power dissipation and enabling cooler operation. The MAX17633BATP+T is designed for robust performance in harsh environments. It includes cycle-by-cycle current limiting, thermal shutdown, and short-circuit protection. The adjustable soft-start prevents inrush current during startup, and the open-drain RESET output provides a power-good signal for system sequencing. The device is available in a 20-WFQFN package with an exposed pad for enhanced thermal performance, and it is RoHS compliant. Typical applications include base-station power supplies, distributed supply regulation, general-purpose point-of-load converters, high-voltage single-board systems, industrial control power supplies, and wall transformer regulation. Its wide input range and high output current make it ideal for 12V and 24V bus systems, as well as for powering FPGAs, ASICs, and processors in industrial and telecom equipment. When designing with the MAX17633BATP+T, ensure proper PCB layout with adequate input and output capacitance, and place the inductor and feedback resistors close to the IC to minimize parasitic inductance. The exposed pad should be soldered to a large copper area for effective heat dissipation. The MODE/SYNC pin allows synchronization to an external clock to reduce EMI in multi-rail systems.
MAX17634CATP+ - 36V, 4.25A Sync Buck DC-DC Converter | ADI
The Analog Devices (formerly Maxim Integrated) MAX17634CATP+ is a high-efficiency, high-voltage, synchronous step-down DC-DC converter with integrated MOSFETs that delivers up to 4.25 A of output current from a 4.5 V to 36 V input rail, housed in a 20-pin TQFN (4x4 mm) exposed-pad package. The MAX17634C variant provides an adjustable output voltage from 0.9 V to 32.4 V, while the MAX17634A and MAX17634B variants offer factory-set 3.3 V and 5 V outputs respectively. What is a synchronous step-down (buck) DC-DC converter? A buck converter is a switched-mode power supply topology that steps a higher DC input voltage down to a lower regulated DC output voltage. The synchronous variant replaces the conventional rectifier diode with a low-side MOSFET to reduce conduction losses and achieve peak efficiencies typically above 90 percent. Buck converters sit within the broader hierarchy: switching regulator -> DC-DC converter -> power management IC -> semiconductor. They are preferred over linear regulators whenever large VIN-VOUT differentials or high load currents would otherwise waste significant power as heat. The MAX17634CATP+ features peak-current-mode control for stable loop compensation and supports forced PWM, PFM, and discontinuous-conduction-mode operation, allowing efficiency optimization across full-load and light-load conditions. A 2.2 MHz switching frequency (with low minimum on-time) enables small external LC filter components and compact PCB layouts. Programmable soft-start, adjustable current limit, and thermal shutdown are integrated for robust fault handling. Architecturally, the device integrates high-side and low-side N-channel MOSFETs along with the PWM controller, feedback network, and reference into a single die. The exposed pad (EP) on the TQFN-20 package provides a low thermal resistance path (~30 C/W typical), critical for continuous 4.25 A operation. Typical applications include industrial 24 V bus distributed power rails, point-of-load (POL) regulators for FPGAs/ASICs/Microcontrollers, automotive infotainment and body-electronics subsystems, battery-powered portable equipment, and general-purpose 12 V/24 V industrial automation supplies. When designing with this part, choose input/output ceramic capacitors rated for the expected ripple current and place them as close as possible to the IN and LX pins. Use 4-layer PCB construction with a continuous ground plane tied to the exposed pad to achieve the rated thermal performance. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes for the MAX17634CATP+ not found in the manufacturer datasheet alone.
MAX17823BGCB/V+T - 12-Ch HV Battery Sensor, AEC-Q100 | Analog Devices
The Analog Devices MAX17823BGCB/V+T is a 12-channel, high-voltage battery-management data-acquisition system that integrates a 12-bit SAR ADC capable of measuring up to 12 cell voltages plus two temperature channels in 161 microseconds, housed in a 64-pin LQFP (10x10 mm) package. The part is qualified to AEC-Q100 and operates across a -40C to +105C automotive temperature range, with on-chip cell-balancing switches, daisy-chain UART/SPI communications, and built-in diagnostics for high-voltage battery stacks. A battery management IC (BMIC) is a mixed-signal data-acquisition system used in multi-cell lithium-ion battery packs to digitize cell voltages, pack current, and temperature, and to drive cell-balancing switches. In the broader taxonomy, the MAX17823B sits under battery management IC -> power management IC -> analog/mixed-signal IC -> semiconductor. It is one of the few parts that integrates high-voltage front-end analog multiplexers, a precision SAR ADC, cell-balancing FET drivers, and an isolated daisy-chain communication port in a single IC. Key features include 12-bit SAR ADC with 161 microseconds full-stack conversion time, 12 internal cell-balancing switches supporting up to 150 mA per channel, integrated daisy-chain UART interface for high-voltage isolation up to 3000 V and above, on-chip voltage regulator and reference, and built-in self-test diagnostics for cell-wires, the ADC path, and the balancing switches. The 64-pin LQFP-10x10 package gives a manageable thermal resistance while leaving enough perimeter I/O for the 12 HV cell inputs plus digital, analog, and power pins. Architecturally, the part uses a high-voltage CMOS process with on-chip level shifters to tolerate the 60 V-plus common-mode voltage of a 12-cell Li-ion stack. The daisy-chain interface uses capacitive isolation, allowing multiple stacked MAX17823B devices to be daisy-chained and read by a single master MCU through a low-voltage UART. This greatly simplifies the BMS layout in series-string battery packs used in EVs and industrial storage. Typical applications include electric vehicle (EV) battery management systems, hybrid EV pack monitors, industrial lithium-ion energy-storage BMS, e-mobility battery packs (e-bike, e-scooter), and uninterruptible power supply (UPS) battery stacks. The wide operating temperature range and AEC-Q100 qualification also make it suitable for off-road and heavy-machinery battery systems. When designing with this part, ensure the PCB layout keeps the high-voltage cell-input traces physically separated from low-voltage digital/analog signals, and that the daisy-chain isolation capacitors are sized per the datasheet reference design. Compared with discrete solutions using external ADCs and balancing FETs, the MAX17823B significantly reduces PCB area, BOM cost, and firmware complexity. This page synthesizes distributor pricing, drop-in alternative MPNs, and practical design notes not found in the manufacturer datasheet alone, giving engineers a one-stop reference for sourcing, replacement, and design decisions.
MAX17843ACB - 12-Ch ASIL-D Battery Monitor IC | 64-LQFP | ADI
The Analog Devices (formerly Maxim Integrated) MAX17843ACB is a 12-channel, high-voltage, ASIL-D-capable smart battery-monitoring data-acquisition interface ASIC, housed in a 64-pin LQFP (10 mm x 10 mm) package and qualified across the -40C to +125C automotive temperature range. It combines a differential 12-channel cell-voltage analog front end (full-scale range up to 5.0 V, usable to 4.8 V per cell), a 14-bit successive-approximation ADC with oversampling, and a high-voltage switch-bank input capable of supporting long series strings of lithium-ion cells used in automotive and energy-storage battery packs. A battery monitor IC (sometimes called a battery management IC, BMIC, or cell-monitoring ASIC) is a mixed-signal device that continuously measures the voltage of every cell in a stacked battery pack and reports the values to a host microcontroller over an isolation-linked serial interface. The MAX17843 family sits at the top of the battery-management hierarchy: cell monitor -> battery monitor ASIC -> BMS host MCU -> pack-level controller -> vehicle or grid-storage system. ASIL-D readiness means the device is designed to support the highest automotive functional-safety integrity level (per ISO 26262) when paired with a system-level safety architecture. Key features include support for long-series cell stacks typically up to 12 series cells, an integrated high-voltage front end that can survive high common-mode pack voltages, integrated diagnostics for open-wire and wire-fault detection, and a digital interface (SPI/UART, per datasheet) suited to daisy-chained or transformer-isolated comms. The device is optimized for hybrid-electric and electric-vehicle battery packs, 12V/48V mild-hybrid systems, e-mobility battery modules, and stationary energy-storage battery racks. Improvements over its predecessor (MAX17823) focus on measurement accuracy and additional safety diagnostics. Designed in a high-voltage BCDMOS process with on-chip level shifting, the MAX17843ACB removes the need for external resistor-divider networks on each cell input and integrates balancing-switch support. The wide 9 V to 65 V (typical) analog supply range covers both 12 V automotive and 48 V mild-hybrid rails. Internally calibrated references and redundancy paths reduce the bill of materials and shrink PCB area in safety-critical battery-management boards. Typical applications include electric-vehicle traction battery packs (BEV/PHEV), 48 V mild-hybrid battery management, e-scooter and e-bike BMS modules, grid-tied residential energy-storage battery stacks, and industrial multi-cell lithium battery packs. It is also used in backup-battery monitoring for telecom and data-center 48 V plants. For long strings (>12S), multiple devices are daisy-chained along the pack height with digital isolation between modules. When laying out the cell-input traces, keep each cell-input differential pair short, symmetric, and routed away from the high-voltage switch-bank node. A dedicated ground plane under the analog section and proper isolation barriers between high-voltage pack nodes and low-voltage logic are required to meet ASIL-D system goals. Per the datasheet, leave adequate creepage on the LQFP-64 footprint, and follow the recommended decoupling network (typically 1 uF + 100 nF close to each supply pin). This page synthesizes current distributor pricing, true drop-in alternatives (verified from the MAX17823 replacement note in the Analog Devices engineering zone), parametric comparison, and practical design notes not collected on the manufacturer product page alone.
MAX17843ACB-V - 12-Ch HV Battery Monitor ASIL D | Analog Devices
The Analog Devices (formerly Maxim Integrated) MAX17843ACB/V+ is a programmable, highly integrated, high-voltage, 12-channel battery-monitoring smart data-acquisition interface with extensive safety features, delivered in a 64-pin LQFP (10x10 mm) package. Per the manufacturer datasheet, it is optimized for lithium-ion battery stacks in automotive systems, hybrid electric battery packs, electric vehicles, and any system that stacks long series strings of secondary cells, supporting up to 12 series-connected cells with high-voltage common-mode tolerance. A battery management IC (BMIC) like the MAX17843 is the analog front-end inside a battery management system (BMS). It performs per-cell voltage measurement, temperature monitoring through external sense paths, and digital communication to a system microcontroller, while meeting ISO 26262 functional-safety requirements at the highest ASIL D level for automotive applications. The MAX17843 occupies the BMS hierarchy at: cell-monitoring ASIC -> battery monitor -> BMS IC -> power management. Key features include a high-voltage analog front-end rated for up to 80 V common-mode transient survival, integrated 12-channel 14-bit SAR ADC, isolated differential UART (daisy-chain) communication for high-voltage stack isolation, and ASIL D-capable diagnostic coverage including open-wire, overtemperature, and overvoltage detection. The IC operates from a low-voltage supply rail (typically 3.3 V) provided by an isolated domain supply. Architecturally, the device uses a high-voltage switched-capacitor front end with per-channel differential sampling, a precision bandgap reference, and an embedded state machine for autonomous cell-balancing control. The integrated daisy-chain UART eliminates optocouplers in HV isolation, reducing BOM cost and latency versus CAN-based BMS architectures. Typical applications include electric vehicle traction battery management, hybrid EV battery packs, energy storage systems, e-scooter and e-bike battery packs, industrial backup battery arrays, and 48 V mild-hybrid battery monitoring. The wide common-mode range also supports industrial battery backup (BBU) installations. When designing with this device, ensure adequate thermal relief on the LQFP land pattern and route the daisy-chain differential pair with controlled 100 ohm differential impedance across the HV isolation barrier for reliable communication in noisy environments. This page synthesizes verified distributor pricing, structured drop-in alternatives from the MAX1784x family, and practical design notes not found in the manufacturer datasheet alone.
MAX20075ATCB/V+ - 36V 0.6A Mini Buck Converter | Analog Devices
The Analog Devices MAX20075ATCB/V+ is a 36V, 600mA synchronous step-down buck converter with integrated high-side and low-side switches, packaged in a 12-pin TDFN (3mm x 3mm) with exposed pad. The device accepts input voltages from 3.5V to 36V and delivers a programmable/fixed output (1V reference programmable to 3.3V, 3V, or adjustable up to 10V) at up to 0.6A, with ±2% output accuracy across the 6V to 18V normal operating input range. A buck (step-down) converter is a switched-mode DC-DC converter that lowers a higher input voltage to a lower regulated output voltage with high efficiency by alternately storing energy in an inductor and releasing it to the load. Compared to linear regulators, buck converters dissipate far less power at large VIN-VOUT deltas, making them essential in automotive and industrial power trees where battery or 12V/24V bus rails must be reduced efficiently to logic-level voltages. Key features include 20ns minimum on-time (enabling 36V-to-low-VOUT step-down without duty-cycle limits), 5µA quiescent current (suitable for always-on automotive subsystems), programmable switching frequency, internal MOSFETs, and AEC-Q100 qualification for automotive applications. Spread-spectrum and forced-PWM options further reduce EMI in radio-sensitive environments. The MAX20075 uses a peak-current-mode control architecture with internal compensation, requiring only an inductor, input/output capacitors, and feedback resistors for a complete solution. The integrated high-side/low-side FETs and synchronous rectification minimize external component count, enabling a sub-50mm x 100mm solution footprint - among the smallest in the 36V-input mini-buck category. Typical applications include automotive infotainment, ADAS sensor power, instrument clusters, point-of-load regulation after a pre-regulator, and any 12V/24V industrial bus node that needs a compact, efficient step-down to a sub-5V rail. When designing with this device, choose an inductor rated for peak currents above the saturation limit (typically 1.0-1.2A peak for 0.6A continuous output) and place the input capacitor within 2mm of the IC to minimize switching-node ringing. This page synthesizes distributor pricing, AEC-Q100-qualified drop-in alternatives, and practical design considerations not always aggregated on the manufacturer datasheet.
MAX20076ATCB - 36V, 1.2A Synchronous Buck Converter | Analog Devices
The Analog Devices MAX20076ATCB is a 36 V input, 1.2 A synchronous step-down buck converter with integrated high-side and low-side switches, supplied in a compact 12-pin 3 mm x 3 mm TDFN package with an exposed pad. It supports a 3.5 V to 36 V input range and provides accurate ±2% output regulation over the normal 6 V to 18 V input range. Its 20 ns minimum on-time supports high step-down ratios and compact inductors. A synchronous buck converter is a DC-DC voltage-regulator class that reduces a higher input voltage to a lower, regulated output. Unlike a linear regulator, its internal high-side and low-side MOSFET switches transfer energy through an inductor during alternating charge and discharge cycles. This switching action improves conversion efficiency, especially when the output voltage is substantially below the input voltage. The MAX20076 belongs to the synchronous buck-converter family within power-management ICs. Key features include integrated high-side and low-side switches, programmable output voltage, 1.2 A output-current capability, operation from 3.5 V to 36 V, and a 2 MHz switching option identified in distributor data. The 3 mm x 3 mm TDFN package supports space-constrained designs, while the exposed pad provides a thermal and electrical connection to the PCB. The converter also uses very few external components according to the manufacturer datasheet. The 20 ns minimum on-time is technically significant because it permits a high ratio between input and output voltages while retaining regulation. This helps designers use a smaller inductor than would be practical with a conventional buck controller that has a longer minimum pulse width. The integrated synchronous switches reduce external power-stage components and can improve conversion efficiency compared with a diode-based asynchronous implementation. Typical applications include automotive electronics, industrial systems, portable equipment, and distributed power rails that require compact step-down conversion from a wide input range. For an automotive design, engineers should still verify the exact temperature grade, automotive qualification status, and electrical limits in the ordering information and manufacturer datasheet before production release. The principal design consideration is component selection and PCB layout. Inductor saturation current, switching-node layout, input-capacitor placement, and exposed-pad thermal performance directly affect reliability and electromagnetic compatibility. Designers should follow the manufacturer’s recommended application circuit and layout guidance rather than estimating these values from generic buck-converter examples. This product page consolidates verified manufacturer specifications, distributor availability references, package information, and practical design guidance. It distinguishes published facts from parameters that require confirmation from the full datasheet, helping engineers evaluate this wide-input, compact converter efficiently.
MAX20076ATCB/V+ - 36V 1.2A 2MHz Mini Buck Converter | ADI
The Analog Devices (formerly Maxim Integrated) MAX20076ATCB/V+ is a 36V, 2MHz, 1.2A synchronous mini buck converter with integrated high-side and low-side MOSFET switches, housed in a 3mm x 3mm 12-pin TDFN exposed-pad package. It accepts 3.5V to 36V input and delivers a programmable (or factory-fixed) output voltage between 1V and 10V with ±2% accuracy across the 6V to 18V automotive nominal input range. The 20ns minimum on-time capability supports large step-down ratios at the 2.1MHz switching frequency, enabling a small inductor and minimal external BOM. A buck converter (step-down switching regulator) is a power management IC that uses an inductor, capacitor, and switching transistors to convert a higher DC input voltage into a lower DC output voltage with high efficiency. Synchronous bucks integrate a low-side FET to replace the external Schottky diode, reducing conduction loss. Mini-buck parts target compact, thermally-constrained boards by minimizing external component count and PCB area, fitting the role of "high-voltage point-of-load regulator" within the broader power management IC hierarchy. Key differentiating features of the MAX20076ATCB/V+ include 3.5V to 36V wide input tolerance for load-dump survival, 1.2A continuous output current, 2.1MHz fixed switching frequency (above the AM band for EMI-sensitive automotive designs), factory-trimmed or resistor-set output options, and AEC-Q100 qualification under the "/V+" suffix. The exposed thermal pad and TDFN-12 footprint keep junction-to-ambient thermal resistance low enough for 1.2A delivery in automotive temperature ranges. Architecturally, the device uses peak-current-mode control with internal compensation, a high-side and low-side N-channel MOSFET pair, and a precision feedback chain. Spread-spectrum variants exist in the same family for EMI mitigation. Compared to linear regulators, this synchronous buck offers substantially higher efficiency at large VIN/VOUT deltas, allowing smaller thermal solutions in space-constrained modules. Typical applications include automotive infotainment and cluster power rails, ADAS camera and sensor modules, body electronics (body controllers, lighting), industrial 24V/28V bus point-of-load conversion, and any high-voltage automotive sub-system needing a small, qualified buck. The fixed-output factory variants further simplify design when no output-voltage adjustment is needed. When designing with this part, choose a low-DCR shielded inductor sized for the 2.1MHz switching frequency and verify the input capacitor handles the worst-case RMS ripple. The exposed pad must be soldered to a sufficiently large copper pour to keep junction temperature within the automotive-grade range under full load. This page synthesizes distributor pricing, drop-in same-family variants (MAX20075, MAX25276, fixed-output versions) and practical design notes not consolidated in the manufacturer datasheet, to help engineers select and source the right variant quickly.
MAX20078ATE+T - 65V Sync Buck LED Controller, AEC-Q100 | ADI
The Analog Devices (formerly Maxim Integrated) MAX20078ATE+T is a high-voltage, synchronous n-channel MOSFET controller for high-current buck LED drivers, packaged in a 16-pin TQFN (3x3 mm) with exposed pad. It operates from 4.5V to 65V supply, drives LEDs via analog or PWM dimming up to a controller output of 10 mA gate drive, and switches at up to 1 MHz using a proprietary average current-mode-control scheme that needs no external loop-compensation network while maintaining nearly constant switching frequency. An LED driver controller is a switching power supply IC that regulates current through one or more LEDs by modulating an external MOSFET in a buck topology. The MAX20078 sits in the broader category hierarchy of LED driver -> power management IC -> semiconductor, and uses inductor current sensing rather than output current sensing for tighter regulation. Its average current-mode control, lack of compensation-network requirement, and 1 MHz switching capability place it among the most integrated high-brightness LED controllers in its class. Key features include a 4.5V to 65V input supply range that supports 12V, 24V, and 48V automotive and industrial buses; analog and PWM dimming inputs; integrated high-side and low-side gate drivers for synchronous n-channel MOSFETs; an internal voltage regulator for VCC; and a programmable switching frequency up to 1 MHz. The device supports LED strings up to 60V and is qualified to AEC-Q100 for automotive front-light, daytime-running, and signal-lighting applications. Hysteretic-average current-mode control delivers fast transient response without the type-II/type-III compensation network typical of peak-current-mode parts. Typical applications include automotive headlamp LED drivers, daytime running lights, turn signals, industrial 24V LED lighting, signage, architectural dimmable fixtures, and high-brightness LED arrays in agricultural or machine-vision illumination. The wide input range, AEC-Q100 qualification, and small TQFN-16 footprint make it equally suited to space-constrained automotive front-end PCBs and high-density industrial drivers. When designing with the MAX20078, choose the external MOSFET RDS(on), inductor saturation current, and output-capacitor ESR to handle the peak inductor ripple at the programmed switching frequency. Place the input bypass capacitor directly at the BST and IN pins and keep the high-current loop area small. The exposed pad must be soldered to a continuous ground plane for thermal dissipation. This page synthesizes distributor pricing as of 2026-10-09, AEC-Q100-qualified same-family drop-in alternatives, and PCB-layout design notes that go beyond the manufacturer datasheet.
MAX20313-MAX20316 - 6A Adjustable Current-Limit Switch WLP-12 | Analog Devices
The Analog Devices (formerly Maxim Integrated) MAX20313-MAX20316 family comprises four programmable current-limit switches that operate from +2.5V to +5.5V and deliver internal current limiting adjustable from 500 mA to 6 A. Housed in a 12-bump 1.65 mm × 1.45 mm WLP package, the family integrates a 10 mΩ (typical) N-channel MOSFET on the high-side switch path, a precision current-limit comparator, a fixed blanking timer, and an open-drain FLAG output that interrupts the host processor when a fault occurs. A current-limit switch (also known as an eFuse, hot-swap controller, or power-distribution switch) is a semiconductor device that combines a MOSFET switch with analog current monitoring and fault detection on a single die. It belongs to the broader power-management IC hierarchy: current-limit switch -> load switch -> power switch -> power management IC -> semiconductor. By replacing discrete fuses, sense resistors, and supervisor circuitry, these devices reduce BOM count, board area, and improve diagnostic accuracy in USB, charging, and industrial 24 V bus applications. Key features of the MAX20313-MAX20316 family include 500 mA to 6 A adjustable current limit, 10 mΩ typical on-resistance, reverse-current blocking, and thermal-shutdown protection. Two distinct fault responses are offered - the MAX20313 and MAX20315 operate in continuous current-limit mode (auto-retry), while the MAX20314 and MAX20316 latch off after the blanking window expires, requiring host toggling of the EN input to restart. Internally, the device uses a high-side N-channel MOSFET driven by an internal charge pump, a bandgap-referenced current-sense amplifier that compares the drop across the FET against an external resistor-set threshold, and a state machine that controls the blanking timer and latched/auto-retry behavior. The WLP-12 package achieves a thermal resistance (θJA) suitable for 6 A operation on a properly sized PCB copper pour, and the small 1.65 mm × 1.45 mm footprint enables placement near the connector it protects. Typical applications include USB Type-C VBUS current limiting and port-power switching, large-capacitance load charging (battery packs, super-cap banks), SATA and PCIe hot-plug protection, industrial 24 V bus protection, and any system rail requiring electronic circuit-breaker behavior with processor visibility. When designing with these parts, place the device as close to the input connector as possible, use a low-ESR ceramic bypass on IN, and follow the manufacturer's recommended copper-pour geometry on the GND and OUT bumps for thermal dissipation. The ILIM resistor must be a 1% tolerance part to maintain current-limit accuracy. This page synthesizes distributor pricing, same-package drop-in family variants, and practical layout guidance beyond what the manufacturer datasheet alone provides.
MAX20313EWC - 6A Adjustable Current-Limit Switch | 12-WLP | ADI
The Analog Devices / Maxim Integrated MAX20313EWC is a programmable current-limit load switch in a compact 12-bump WLP (1.65 x 1.45 mm) package with internal current limiting of 500 mA to 6 A, an on-resistance of 10 mOhm (typical), and reverse-current blocking plus thermal-shutdown protection. It operates from a +2.5 V to +5.5 V input rail and is designed to prevent host device damage during faulty load transients. An adjustable current-limit switch is a power-management IC that sits between a source rail and a downstream load, regulating and capping the load current during turn-on surges, hot-plug events, or downstream faults. The MAX20313 belongs to the current-limit switch family within the broader power-management IC hierarchy (current-limit switch -> load switch -> power-management IC -> semiconductor), making it ideal for protecting USB ports, SD card interfaces, and downstream regulators from inrush and short-circuit damage. Key features include a precise adjustable current-limit set via an external resistor, 10 mOhm (typ) on-resistance that minimizes conduction loss at high load currents, internal reverse-current blocking to prevent back-feeding when an external source is present, and thermal shutdown that disables the switch when the die overheats. The MAX20313 uses continuous current-limit mode (autoretry) during overcurrent events, automatically recovering once the fault is removed, whereas the latchoff parts (MAX20314/MAX20316) require logic reset. Typical applications include USB Type-C VBUS current limiting, SDXC card hot-swap protection, data modem card load switches, portable media player power rails, and RF power amplifier power management in cell phones. The 1.65 x 1.45 mm WLP footprint is designed for handheld devices where every square millimeter of PCB counts and high thermal dissipation is achievable through a modest copper pour on the top layer. When designing with the MAX20313, consider the WLP handling and reflow profile (the 12-bump array requires precise pick-and-place alignment), and verify the SET resistor value precisely against the desired ILIM using the RILIM table in the datasheet. Reverse current blocking makes the part tolerant of brown-out events but does not replace a true ideal-diode controller for OR-ing applications.
MAX20313EWC+T - 6A Adjustable Current-Limit Switch | Analog Devices
The Analog Devices MAX20313EWC+T is a programmable current-limit load switch that delivers up to 6 A continuous current in a compact 12-bump WLP package measuring 1.65 mm x 1.45 mm. It operates from a +2.5 V to +5.5 V input supply and integrates a 10 mΩ (typical) internal MOSFET, achieving minimal voltage drop and conduction loss in high-current power-path applications. The current limit is resistor-adjustable from 500 mA to 6 A, allowing designers to match inrush and steady-state budgets to downstream port, cable, and connector limitations. A current-limit switch, also known as an electronic fuse (e-fuse) or hot-swap controller, is a power-distribution switch that protects downstream circuitry from overcurrent, short-circuit, and thermal faults. It sits between an upstream DC rail and the load, integrating an N-channel MOSFET, current-sense amplifier, and control logic that interrupts current flow when the programmed threshold is exceeded. This hierarchical role - load switch -> e-fuse -> power-management IC -> semiconductor - makes the device essential in USB, HDMI, and battery-powered systems where host-side protection is mandatory. Key features include reverse-current blocking to prevent back-feed into the source, thermal shutdown protection against sustained overloads, and a fault flag (FLAG) output for host diagnostics. The active-high ON input enables low-Iq standby when disabled, preserving battery life in portable designs. The MAX20313 variant offers continuous current-limit behaviour during overcurrent events, automatically recovering once the fault is cleared. Internally, the MAX20313EWC+T combines a low-RDS(on) N-channel pass FET with an accurate sense amplifier and one-shot timer that blanks true load steps and prevents nuisance tripping. The 10 mΩ on-resistance keeps full-load dissipation within tens of milliwatts at moderate VIN, which is critical for thermally-constrained wearable and smartphone designs where the WLP cannot rely on a copper heatsink. Typical applications include USB Type-C VBUS current limiting, smartphone and tablet charging port protection, HDMI/DisplayPort hot-plug switches, and any 5 V rail powering external accessories. Designers also use the family in multi-rail point-of-load distribution and OVP/OCM battery-pack firmware paths. When using this device, derate the WLP package above +70 °C ambient using the published derating curve and place the decoupling capacitor within 1 mm of the IN bump. Choose the ILIM resistor value with a 1 % tolerance to maintain accuracy across the programmed current-limit range. This page synthesises distributor pricing, drop-in alternatives, and PCB layout guidance not found in the bare Maxim datasheet.
MAX20790GFC+T - 12V Smart Power Stage | Analog Devices
The Analog Devices MAX20790GFC+T is a one-phase 12V smart power-stage IC built for high-density multiphase synchronous buck voltage regulators, with integrated current and temperature reporting through PMBus. It is supplied in the 12-FC2QFN package identified by distributor listings as a 3.25 mm by 7.4 mm package. A smart power stage is an integrated power-conversion building block that combines the switching functions required by a synchronous buck phase with monitoring, reporting, and fault-protection capabilities. In system terminology, the MAX20790 is a power-management IC, a DC-DC converter component, and a programmable power-stage device. Multiple MAX20790 devices can be paired with a compatible Maxim controller to create a compact multiphase regulator for demanding computing, communications, and server power systems. The verified product information identifies individual phase-current and temperature reporting, fault protection, and support for compact synchronous-buck implementations. These features allow the controller and system management firmware to observe operating conditions without treating the power stage as an entirely opaque module. The reported data is particularly useful for telemetry, fault diagnosis, load balancing, and thermal supervision in multiphase architectures. The MAX20790 is intended to work with Maxim controllers rather than as a stand-alone regulator. The external controller establishes the desired output voltage and coordinates the power stages, while the MAX20790 supplies the phase power path and communication functions. This division of responsibility allows designers to scale phase count for output-current requirements and rail capacity. Typical applications include 12V server and communications rails, high-current processor power systems, accelerator boards, networking equipment, and industrial computing platforms. System designers should follow the manufacturer datasheet for the exact pinout, electrical limits, PMBus implementation, compensation, current-sense behavior, fault thresholds, and thermal layout recommendations. For PCB implementation, place the device according to the package-specific land pattern and provide the required input, output, and decoupling connections with short, low-impedance paths. High-current switching loops should be kept compact to reduce parasitic inductance and EMI. Validate the complete converter with the intended controller, inductor, capacitors, sensing network, load range, and fault-management firmware. This page combines the verified manufacturer and distributor identification of the MAX20790GFC+T with application guidance and engineering checks. It does not infer unreported electrical limits or claim a substitute part without verified pin and parameter matching.
MAX22028AWA+ - 3.5kVRMS Isolated RS-485/RS-422 Transceiver | Analog Devices
The Analog Devices (formerly Maxim Integrated) MAX22028AWA+ is a fully integrated, 3.5 kVRMS digitally isolated half-duplex RS-485/RS-422 transceiver housed in a compact 8-pin wide-body SOIC package with 5.5 mm of creepage. It combines a UART-side interface, an isolated cable-side driver/receiver, and on-chip galvanic isolation in a single IC, eliminating the need for a separate digital isolator plus discrete transceiver. The device supports data rates up to 16 Mbps and operates over the -40C to +85C industrial temperature range. What is an isolated RS-485 transceiver? An RS-485/RS-422 transceiver is a differential line driver/receiver used for robust, long-distance serial communication in noisy industrial environments. Galvanic isolation adds a high-voltage barrier (typically several kVRMS) between the UART/microcontroller side and the bus side, breaking ground loops, protecting low-voltage logic from surge events, and allowing large common-mode voltages between nodes. Isolated transceivers sit at the intersection of interface ICs and power management, and are essential building blocks in industrial fieldbus, motor control, and renewable energy systems. The MAX22028AWA+ integrates the transformer driver, low-dropout LDO, and isolation barrier on-chip, so only a single 3.3 V supply on the UART side is needed - the cable-side power is generated internally. Maxim's AutoDirection feature eliminates the external DE/RE pin control by sensing the driver input and switching direction automatically, which simplifies firmware and reduces GPIO usage on the host MCU. Integrated protection includes +/-25 V bus fault tolerance on the RS-485 pins, hot-swap capability on the cable side, and 5.5 mm creepage for reinforced insulation per IEC 60747-17 (VDE 0884-17). Typical applications include isolated RS-485 nodes in industrial PLCs, solar inverter monitoring, building-automation RS-485 trunks, isolated sensor interfaces, and HVAC controllers. The wide-body SOIC-8 footprint makes the part a drop-in replacement for designs previously built with a small isolated DC-DC plus an external transceiver + digital isolator stack. When designing with the MAX22028AWA+, place 100 nF X7R bypass capacitors on both VDD pins within 2 mm of the package and observe the 5.5 mm clearance requirement for end-to-end primary/secondary PCB copper. This page synthesizes distributor pricing, same-family alternatives (MAX22025-MAX22028), and design notes beyond the manufacturer datasheet.
MAX4840AEXT+T - 28V Overvoltage Protection Controller SC-70-6 | ADI
The Analog Devices (Maxim Integrated) MAX4840AEXT+T is an overvoltage protection (OVP) controller IC housed in a 6-pin SC-70 package with internal charge pump. The MAX4838A/MAX4840A/MAX4842A family protects low-voltage systems against input transients of up to +28V; if the input voltage exceeds the user-adjustable OVP trip level, the controller turns off a low-cost external n-channel MOSFET to isolate the downstream load. The MAX4840A variant is the medium-threshold member of the family, optimized for 5.8V rails, and includes a status FLAG output that asserts when an overvoltage event occurs. An overvoltage protection controller is a type of power management IC that monitors a supply rail and disconnects the load when the input exceeds a programmed threshold, preventing damage to downstream components such as processors, ASICs, RF transceivers, and battery chargers. OVP controllers sit hierarchically above voltage regulators and supervisors in the power-tree, serving as the first line of defense against hot-plug transients, adapter mis-wiring, charger faults, and ESD/inductive kick events on cables and connectors. The internal charge pump (which eliminates the need for an external bootstrap capacitor) drives the gate of an external N-FET, so protection is achieved with very few external components. Key features of the MAX4840AEXT+T include a wide 1.2V to 28V operating input range, an integrated charge pump for N-FET drive, an open-drain FLAG output for fault signaling to a host microcontroller, low quiescent current to preserve battery life, and a small SC-70-6 (SOT-363) footprint ideal for space-constrained portable devices. The architecture uses a precision bandgap reference and comparator to monitor VIN against the internal trip threshold, achieving fast response to overvoltage events. Typical applications include USB Type-C VBUS protection, smartphone and tablet charger protection, hot-plug rails in servers and storage, battery pack protection circuitry, and any system where a downstream low-voltage load must be isolated from a higher-voltage source during fault conditions. The 6-pin SC-70 package makes it suitable for designs where PCB real estate is at a premium. When designing with this device, place the external N-FET as close as possible to the IC and follow the datasheet layout guidance for the VIN sense path to prevent nuisance tripping from ringing. Also include adequate input TVS protection upstream of the controller for surge events beyond the 28V absolute maximum. This page synthesizes distributor pricing, drop-in alternatives within the MAX4838A/MAX4840A/MAX4842A family and across vendors, and practical design notes that complement the manufacturer datasheet for engineers evaluating OVP solutions.
MAX4865LELT+T - 28V OVP Controller w/ Rev Polarity | Analog Devices
The Analog Devices MAX4865LELT+T is an overvoltage protection (OVP) controller with reverse-polarity protection that safeguards low-voltage systems against high-voltage faults up to +28 V and reverse-polarity faults down to -28 V. Housed in a 6-pin 2 mm × 2 mm µDFN package, the part integrates a low-Ron internal charge pump that drives an external complementary MOSFET switch to disconnect the load during fault events. According to the manufacturer datasheet, the device includes preset OVP trip levels selectable per part variant (7.4 V, 6.35 V, 5.8 V, or 4.65 V), an internal 50 ms startup delay, an open-drain FLAG output, and ultra-low standby current of 8.5 µA in UVLO mode with a further-reduced 0.4 µA shutdown current. An OVP controller is a power-management IC that monitors a supply rail and disconnects downstream circuitry when the input voltage exceeds a programmed threshold. It sits between a connector/barrel jack and the system load in the system-power tree and is one tier above simple TVS diodes and PTC fuses because it offers a resettable, configurable electronic trip. Within the broader hierarchy, the MAX4865L belongs to the power-management IC family of specialized protection controllers, alongside ideal-diode OR controllers, hot-swap controllers, and eFuse ICs. The MAX4865L employs a precision bandgap reference plus internal charge pump to bias the gate of an external N-channel MOSFET in normal operation (turning it on for low-loss power-path conduction) and rapidly pulling the gate to ground when an OVP event is detected, isolating the load in microseconds. The integrated reverse-polarity block uses the same MOSFET in conjunction with a companion P-channel device to block negative input voltages down to -28 V without allowing destructive current flow. Typical applications include USB-C /USB-PD VBUS protection at the connector, 12 V automotive accessory rails, lithium-ion battery charger input protection, and hot-plug rails in servers and SSDs. Designers choose this part when they need a small-footprint, low-Iq solution that survives accidental exposure to industrial line voltages or reverse-battery hookups in fielded equipment. When designing with this part, place the external MOSFET within 10 mm of the IC to keep the gate-drive loop short and minimize dv/dt-induced false triggering. The 50 ms startup blanking time avoids spurious trips during system ramp; do not place bulk capacitance downstream of the switch MOSFET larger than the value the datasheet allows, or inrush can re-trigger OVP after the blanking window expires. This page synthesizes distributor pricing, parametric same-package alternatives, and practical design notes that supplement what is in the manufacturer datasheet.
MAX6366LKA31+T - 3.08V SOT-23-8 Processor Supervisor | Maxim Integrated
The Analog Devices Inc./Maxim Integrated MAX6366LKA31+T is a low-power microprocessor supervisory circuit with a 3.08 V reset threshold, active-low open-drain or active-high? The verified distributor records identify this device as a single-channel push-pull, totem-pole supervisor in an 8-pin SOT-23 package. It belongs to the MAX6365–MAX6368 family, which combines supply monitoring, battery-backup control, memory write protection, and chip-enable gating for microprocessor systems. The verified product listing also identifies the package as SOT23-8 and the target orderable suffix as +T. A voltage supervisor, also called a supply supervisor, reset monitor, or microprocessor reset circuit, monitors a power rail and asserts or deasserts a reset signal when the rail crosses defined monitoring thresholds. This class of power-management IC belongs to the broader sequence of power-integrity device, supervisor, and system-protection component hierarchy. In a microprocessor or FPGA design, the supervisor helps prevent operation from an invalid supply voltage, while its auxiliary controls can coordinate backup supply behavior and sensitive circuit gating. The verified information identifies the MAX6366LKA31+T as a 3.08 V processor supervisor variant. The exact threshold tolerance, supply-current values, reset timing, operating-temperature limits, and truth-table details are not present in the supplied excerpts and must be confirmed in the manufacturer datasheet before release to production. The MAX6366 family is described by Analog Devices as low-power supervisory circuits for power-supply monitoring, battery-backup control functions, and memory write protection in microprocessor systems. The part is packaged in an 8-pin SOT-23 surface-mount package, making it suitable for compact embedded boards where a dedicated reset monitor is preferable to relying only on software watchdog behavior. Distributor records list the MAX6366LKA31+T with push-pull, totem-pole output architecture and one-channel monitoring. Mouser describes the related family as SOT23 low-power microprocessor supervisory circuits with battery backup and chip-enable gating. Typical applications include embedded processor boards, industrial controllers, battery-backed systems, memory write-protection circuits, and mixed-signal equipment requiring deterministic power-fail signaling. Designers should check the exact MAX6366LKA31+T pinout, threshold polarity, enable timing, and output behavior against the manufacturer datasheet, especially when replacing a supervisor with different reset polarity or threshold options. This product page combines the verified distributor identity and package information with application guidance and sourcing links. It does not infer unprovided electrical values, and the complete package pin mapping should be taken from the official MAX6366 datasheet.