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MC13892BJVL - PMIC for i.MX51/37/35/27, 4 BUCK + 12 LDO | NXP
The NXP MC13892BJVL is a power management integrated circuit (PMIC) designed specifically for the i.MX51, i.MX37, i.MX35, and i.MX27 application processors, integrating 4 buck converters, 12 LDOs, and user interface functions in a single 186-pin LFBGA (12x12 mm) package. The part is targeted at portable and handheld platforms such as personal media players, navigation devices, and e-readers where board area, quiescent current, and sequencing flexibility are critical. A Power Management IC (PMIC) is a class of mixed-signal power management IC that consolidates multiple voltage rails, battery charging, real-time clock supply, and sometimes audio or display drivers into one device. PMICs are widely used in SoC-based systems where a single chip must produce every voltage domain required by the host processor, memory, and peripherals, while also supervising power-up and power-down sequencing. The MC13892BJVL integrates four synchronous buck converters that power the application processor core, memory, and I/O domains, plus twelve low-dropout regulators that supply radios, displays, and analog blocks. The device also includes battery management functionality (charger interface, coulomb counter, and backup battery switching), LED drivers for display and keypad backlight, and a wide range of housekeeping functions. The device supports dynamic voltage scaling and I2C/SPI control for host-driven power state changes. The architecture combines a high-frequency switching regulator core for the buck converters with low-noise linear regulators for sensitive RF and audio supplies. Programmable sequencing, hardware event detection (battery insertion, USB attach, power button), and integrated passives reduce external component count significantly compared to discrete power solutions, which is essential for handheld product form factors. Typical applications include portable media players, GPS personal navigation devices, e-book tablets, handheld industrial data terminals, and any i.MX51/i.MX37-based embedded platform. The MC13892BJVL is the standard NXP reference PMIC for the Freescale i.MX51 reference design (MX51 Babbage board ecosystem) and the SCALEA reference platform. A practical trade-off is the part's large 186-ball BGA package, which requires a multi-layer PCB with microvia technology and careful thermal management. Designers should follow the NXP reference design layout guidelines and the recommended decoupling scheme for proper buck converter ripple and transient response.
MC13892CJVKR2 - i.MX PMIC, 4 Buck, 12 LDO | NXP | BGA-139
The NXP Semiconductors MC13892CJVKR2 is a highly integrated power management IC (PMIC) for the i.MX51, i.MX37, i.MX3x and i.MX27 application processors, integrating 4 adjustable buck (switching) regulators, 12 adjustable LDO regulators, a battery charging system with USB charging support, a 10-bit ADC, and display LED drivers in a 139-pin MAPBGA/TFBGA package (7x7 mm). A power management IC is a specialized semiconductor that consolidates multiple voltage regulators, chargers, supervision circuits, and interfaces into a single chip. Within the power management hierarchy, a PMIC sits above individual DC-DC converters and linear regulators, orchestrating multi-rail power sequencing for application processors in battery-powered systems such as smartphones, personal media players, and portable navigation devices. Key features include four adjustable buck converters for processor core and memory rails, twelve adjustable LDOs for analog, I/O, and peripheral supplies, an integrated battery charger supporting USB charging, a 10-bit ADC for battery and system monitoring, and LED drivers for display backlighting. This level of integration replaces dozens of discrete components, reducing board area and bill-of-materials cost in handheld designs. Architecturally, the MC13892 couples its switch-mode bucks for high-efficiency core supplies with low-noise LDOs for sensitive analog rails, and provides power sequencing control appropriate for i.MX processor power-up requirements. The 10-bit ADC enables fuel-gauging assistance and thermal monitoring through the host processor via its serial interface. Typical applications include personal media players based on i.MX51/i.MX37, portable navigation devices on i.MX3x, and industrial handhelds built on i.MX27, where a compact single-IC power tree plus battery charging is required. Design consideration: since this part is discontinued by NXP, new designs should plan for last-time-buy inventory or a redesign to a currently available i.MX PMIC companion. This page synthesizes distributor listings, drop-in family alternatives, and design guidance not consolidated in the manufacturer datasheet. Prices are quote-based as of 2026-09-14.
MC13892CJVL - i.MX35/51 PMIC | 4 Buck, 12 LDO, 139-MAPBGA | NXP
The NXP Semiconductors MC13892CJVL is a Power Management Integrated Circuit (PMIC) designed specifically for the Freescale/NXP i.MX51, i.MX37, i.MX35, and i.MX27 application processors. Packaged in a 139-ball MAPBGA, it integrates four adjustable buck (step-down) regulators, twelve adjustable LDO regulators, a 10-bit ADC for system monitoring, battery charging support, RTC supply, and glue logic for handheld/mobile devices. The device operates from a single-cell Li-Ion input (2.5 V typical to 5.5 V transient) and is widely used in personal media players, navigation devices, and other battery-powered embedded systems. A Power Management IC (PMIC) is a highly integrated device that consolidates multiple voltage rails, battery management, and supervisory functions into a single chip. PMICs sit at the top of the power architecture hierarchy: PMIC > multi-rail regulator > switching regulator + LDO > discrete regulators. By replacing dozens of discrete regulators, a PMIC shrinks the power section's PCB area, simplifies sequencing, improves efficiency, and centralizes fault protection. For mobile application processors like the i.MX51, the PMIC must generate the precise combination of rails (core, memory, I/O, analog, RF, backlight, USB) the SoC requires. Key features of the MC13892 include programmable output voltages via I2C/SPI, hardware-default voltages that allow immediate operation without firmware, dynamic voltage scaling for the processor core to extend battery life, an integrated 10-bit ADC for battery measurement and temperature sensing, USB OTG transceiver interface support, and an audio amplifier bias supply. The four buck converters deliver up to ~1.5 A each and operate at up to ~2 MHz, allowing small inductors. The MC13892 uses a hysteretic / PWM buck topology with internal MOSFETs and an integrated bandgap reference. The twelve LDOs share a common enable and soft-start scheme; trim registers are factory-set. A built-in Coulomb counter for fuel gauging and a real-time clock supply (VBACKUP) round out the integration. Multiple interrupt sources are ORed onto a single IRQ pin. Typical applications include tablets and personal media players based on i.MX51, automotive infotainment with i.MX35, handheld navigation, e-readers, and any battery-powered device needing a multi-rail, sequenced power tree for a high-performance application processor. Designers should study the reference manual closely. Buck converter output capacitor ESR directly affects stability - X5R/X7R ceramics in the 10-22 uF range per phase are recommended. Inductor saturation current must exceed peak buck current by 30%. Ground returns must be partitioned between noisy buck grounds and quiet analog grounds. This page consolidates distributor pricing, parametric drop-in alternatives, and practical design notes that complement - and go beyond - the manufacturer datasheet. XAIPART last verified all data on 2026-10-15.
MC13892DJVKR2 - PMIC 4 Buck 12 LDO for i.MX | NXP
The NXP Semiconductors MC13892DJVKR2 is a highly integrated power management IC (PMIC) providing 4 adjustable buck converters, 12 adjustable LDO regulators, and a 10-bit ADC, housed in a 139-terminal PBGA/TFBGA (7x7 mm) package designed for the i.MX51, i.MX37, i.MX35, and i.MX27 application processor families. A power management IC (PMIC) is a specialized power management integrated circuit that consolidates multiple voltage regulators, power switches, chargers, and supervisory functions into a single die. In the power-management hierarchy, a PMIC sits above individual LDOs and DC-DC converters, acting as the system-level power hub that sequences, regulates, and monitors all rails required by an application processor and its peripherals. Key features of the MC13892DJVKR2 include four adjustable synchronous buck regulators for core and I/O rails, twelve adjustable low-dropout regulators for analog, audio, and peripheral supplies, an integrated 10-bit ADC for battery and thermistor monitoring, battery charging management, LED display drivers, and coin cell backup support - making it a complete power subsystem for handheld and mobile devices. Architecturally, the MC13892 integrates power sequencing logic tailored to i.MX processors, ensuring core rails power up in the correct order with proper reset supervision. The multi-regulator topology reduces external component count, board area, and bill-of-material cost compared with a discrete multi-regulator design, while the 139-ball square TFBGA footprint concentrates all power functions in a compact 7x7 mm area. The industrial temperature grade supports demanding portable environments. Typical applications include personal media players based on the i.MX51 or i.MX37, PND (personal navigation device) platforms using i.MX35, and industrial handheld terminals built on i.MX27. The battery charger function and LED drivers make it especially suitable for battery-powered portable multimedia equipment. A key design consideration: because the MC13892 is a processor-specific PMIC, the power-up sequencing and regulator configuration are tightly coupled to the i.MX boot flow - always verify rail order against the i.MX reference design and program configuration fuses/registers accordingly. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
MC13892VLR2 - PMU for i.MX51/37/35/27, 186-LFBGA | NXP
The NXP MC13892VLR2 is a power management unit (PMU) companion IC designed to power NXP's i.MX51, i.MX37, i.MX3, and i.MX27 application processors in a 186-pin LFBGA (12x12) package. It integrates multiple buck and boost switching regulators along with linear regulators, LED drivers, battery charging, and a real-time clock supply, delivering a complete system power solution from a single IC. A power management IC (PMIC/PMU) is a highly integrated mixed-signal device that consolidates the multiple voltage rails required by an application processor and its peripherals into one package. The PMIC sits between the battery or DC adapter and the SoC, replacing dozens of discrete DC-DC converters and LDOs with a programmable, sequencable solution that improves efficiency, reduces PCB area, and simplifies power-up sequencing. Within the broader taxonomy, the MC13892 belongs to the application-processor-specific PMIC class, sitting between general-purpose multi-rail PMICs and discrete point-of-load regulators. Key features of the MC13892VLR2 include four synchronous buck converters operating from a 5V/28V input range, multiple LDO outputs, a backup battery charger, programmable startup sequencing via I2C, and integrated LED drivers for display backlighting. The device supports dynamic voltage scaling (DVS) to extend battery life in portable applications by adjusting core voltages to match processor load. According to NXP product documentation, the part targets handheld and mobile devices such as personal media players and GPS navigation units. The MC13892 uses a mixed-signal architecture combining hysteretic and PWM buck controllers with linear post-regulators, optimized for fast transient response to the variable loads created by modern application processors. Its I2C-programmable output voltages and enable timing allow seamless co-design with the i.MX51/37/35/27 power-on sequence, eliminating the need for external sequencer logic. Typical applications include portable media players, GPS navigation devices, handheld industrial terminals, and other battery-powered embedded systems based on the supported i.MX processors. The wide input voltage range (5V to 28V boost-capable) also enables designs powered from multi-cell battery packs or 12V automotive rails. When designing with the MC13892VLR2, pay close attention to the 186-ball LFBGA layout - controlled-impedance routing is needed for the high-current buck inductor nodes. Thermal management requires adequate copper under the exposed die area because the internal MOSFETs dissipate several hundred milliwatts to several watts depending on load and input/output voltage differential. This page synthesizes distributor stock levels, package-level alternative equivalents, and application reference designs that go beyond the bare datasheet, helping engineers source, second-source, and qualify the MC13892VLR2 more efficiently.
MC33774 - 18-Channel Li-Ion Battery Cell Controller IC ASIL D | NXP
The NXP MC33774 is an 18-channel lithium-ion battery cell controller IC designed for the most demanding automotive and industrial applications. The device supports monitoring of up to 18 series-connected cells, features current sensing, integrated ADC measurement, and comprehensive diagnostics. The IC is lifetime qualified for less than 1.5 mV of voltage measurement error over the full temperature and cell voltage range, and its independent internal architecture achieves ASIL D functional safety targets at cell voltage and temperature measurements. It is housed in a 64-pin LQFP (10x10 mm) package. A battery cell controller IC is a mixed-signal device that sits between individual battery cells and a supervisory Battery Management System (BMS) host MCU. It performs the safety-critical functions of high-precision cell voltage measurement, temperature sensing via onboard ADC channels, passive or active cell balancing, and isolated communication back to the host. Within the BMS hierarchy, the cell controller is a sub-block of a battery management IC family that ultimately enables state-of-charge (SOC), state-of-health (SOH), and functional-safety reporting for the whole pack. Key features of the MC33774 include a 14-bit/16-bit sigma-delta ADC for cell voltage and temperature conversion, integrated passive cell-balancing drivers (with PWM capability for active balancing), an isolated daisy-chain / SPI communication interface (transformer-coupled), and embedded diagnostic features for open-wire, over-voltage, and under-voltage detection. The part supports hot-plug insertion of the battery pack through controlled startup sequencing and integrates Coulomb counting for current measurement. From a technical-architecture perspective, the MC33774 uses a high-voltage analog front-end capable of accepting differential cell voltages up to 5 V per channel, plus a precision voltage reference that supports the <1.5 mV lifetime error specification. The integrated isolation interface eliminates the need for an external digital isolator between the cell controller and the host MCU, simplifying layout and reducing BOM cost in 400 V and 800 V EV battery packs. Typical applications include EV/HEV battery management systems for high-voltage traction packs, stationary energy storage systems (ESS), uninterruptible power supply (UPS) battery backups, two- and three-wheeled electric mobility battery packs, and industrial e-mobility systems requiring ASIL D functional safety. The wide cell count range (3-18 cells in series) supports both 48 V mild-hybrid and 400 V/800 V full-EV architectures. When designing with the MC33774, the most important trade-off is the cell balancing current versus thermals: each balancing FET dissipates (Vcell x Ibalance) watts per active channel, so 100 mA of balancing on a 4.2 V cell yields 420 mW per channel and requires careful PCB copper budgeting. Use NXP's FRDM-33774BCCPEVB evaluation board and the NXP BMS SDK as starting reference designs. This page synthesizes distributor pricing, ASIL D-relevant design notes, and drop-in same-package alternatives not found on a single datasheet cover page - practical intelligence for engineers qualifying a battery cell controller for series production.
MC34671AEP - 600mA Li-Ion Charger, 28V Input | NXP Semiconductors
The NXP Semiconductors MC34671AEP is a cost-effective, fully-integrated 600 mA single-cell Li-Ion / Li-Polymer battery charger housed in an 8-pin UDFN EP package (2 mm x 3 mm, 0.5 mm pitch, 0.65 mm height). It tolerates an input voltage up to 28 V, which eliminates the input over-voltage protection circuitry required in handheld USB / adapter-powered devices, and charges the battery to a fixed 4.2 V termination voltage. A Li-Ion / Li-Polymer battery charger is an integrated power-management IC that combines a linear charging element, current-sense amplifier, voltage reference, and thermal regulation loop into one die to safely recharge a single-cell lithium chemistry battery from a DC source. The MC34671AEP belongs to the broader hierarchical category of battery management ICs (BMICs), which themselves are a sub-class of power management ICs (PMICs) within mixed-signal semiconductors. Key features of the MC34671AEP include a complete charge cycle with constant-current (CC) and constant-voltage (CV) regulation, an input supply range of 2.6 V to 10 V with 28 V transient tolerance, programmable charge current up to 600 mA, and an internal thermal regulation loop that automatically reduces charge current at elevated die temperature. The 8-pin UDFN EP package provides a low thermal-resistance path for the internal power transistor. The IC uses a pass-transistor linear architecture with internal current sensing. Charge current is set by an external resistor on the ISET pin. The status output (CHRG) drives an LED or a host GPIO, and the FAULT output signals a charge error. An internal protection block monitors input voltage, die temperature, and charge timer. Typical applications include single-cell Li-Ion / Li-Polymer charger circuits in handheld point-of-sale terminals, Bluetooth speakers, wearable health monitors, USB-powered toys, GPS trackers, and backup battery packs for IoT edge nodes. When designing with the MC34671AEP, ensure the USB / adapter current limit is not exceeded; use an input RC filter to suppress inductive transients at the adapter, and provide adequate copper area under the UDFN exposed pad to keep junction temperature within the safe operating area at full 600 mA charge current. This page synthesizes distributor availability (3 sources), same-brand drop-in reel variants, parametric comparison against linear Li-Ion charger alternatives, and practical PCB layout notes that complement, rather than duplicate, the manufacturer datasheet.
MC34709VKR2 - i.MX50/53 PMIC, 6 Buck, 8 LDO | NXP
The NXP MC34709VKR2 is a power management integrated circuit (PMIC) designed primarily for use with the i.MX 50 and i.MX 53 application processor families, integrating 6 buck (switching) regulators, 8 LDO regulators, a boost regulator, and a 10-bit ADC in a 130-terminal MAPBGA/LFBGA package (8x8 mm per DigiKey listing). It operates from a nominal 3.6 V supply with a 3 V to 4.5 V input range and a -40C to +85C industrial operating temperature range. A PMIC (power management IC) is a highly integrated power management device that consolidates multiple voltage regulators, supervisory functions, and auxiliary circuits into a single die. Within the power management hierarchy - power management IC -> voltage regulators -> DC-DC converters and LDOs - a PMIC replaces numerous discrete regulators, saving board area and improving rail sequencing for processor-centric designs. Key features include 6 configurable buck converters for processor core, memory, and I/O rails, 8 low-dropout regulators for analog and always-on domains, a boost regulator for display or peripheral supplies, and an integrated 10-bit ADC for supply monitoring. The processor-oriented architecture supports programmable output voltages and sequencing required by i.MX 50/53 boot and sleep modes. Technically, the MC34709 couples a multi-rail switching architecture with I2C-style programmability so firmware can adjust rail voltages, enter low-power modes, and monitor supply health through the 10-bit ADC. This reduces external component count versus discrete regulator stacks. Typical applications include i.MX 50 and i.MX 53 processor power trees, industrial HMI terminals, portable and embedded industrial systems, and any multi-rail design requiring sequenced power-up and power-down. Design consideration: because the MC34709 is programmed for the i.MX power tree, verify default boot rail voltages against your specific i.MX processor variant and adjust register settings as needed. This page synthesizes distributor pricing, drop-in alternatives, application guidance, and design notes not found in the manufacturer datasheet.
MCP73833T-FCI/MF - 1A Li-Ion/Li-Polymer Charge Controller | Microchip
The Microchip Technology MCP73833T-FCI/MF is a stand-alone linear charge management controller for single-cell Lithium-Ion and Lithium-Polymer batteries, delivering up to 1 A of charge current from an integrated pass transistor. Housed in a 10-pin 3x3 mm DFN exposed-pad package, it integrates current sensing, reverse-discharge protection, on-chip thermal regulation, cell temperature monitoring, and safety timers, eliminating the need for an external microcontroller or sense resistor. A linear Li-Ion/Li-Polymer charge management controller is a type of battery management IC that regulates current and voltage applied to a rechargeable cell using a series pass element and a precision control loop. Within the broader power management hierarchy, this controller sits between the system supply and the battery pack and belongs to the family of charge management ICs, power management ICs, and finally analog semiconductors. The MCP73833 is optimized for single-cell (4.2 V) charging and implements the constant-current / constant-voltage (CC/CV) profile required by Li-Ion/Li-Polymer chemistry. Key features include programmable charge current up to 1 A, factory-set regulation voltage of 4.2 V (4.2 V option per the FCI variant ordering code), low input supply current, an open-drain STAT output for charge-status indication, and a thermal-regulation loop that automatically reduces charge current when the die temperature rises. The exposed-pad DFN package provides a low thermal resistance path to the PCB, supporting sustained 1 A operation with proper copper layout. The internal architecture uses a precision bandgap reference, current-sense amplifier, comparator-based charge-state machine, and an integrated MOSFET pass transistor. Reverse-discharge blocking prevents the battery from back-feeding the system load when input is removed, simplifying power-path design compared with discrete solutions. Typical applications include USB-powered single-cell Li-Ion chargers, wearable and IoT device charging bays, portable medical device cradles, Bluetooth headphone charging cases, and backup-battery maintainers. The wide input tolerance and integrated protections make it well suited to consumer electronics and low-power industrial sensor nodes. When designing with this device, place the input capacitor, battery capacitor, and the thermal pad with sufficient copper area to support 1 A continuous charge. The PROG pin resistor sets charge current and must be selected according to the desired ICHG; a thermal pad copper pour of at least 1 square inch is recommended for sustained high-current operation.
MCP73871-2AAI/ML - 1A Li-Ion/Li-Poly Load-Sharing Charger IC | Microchip
The Microchip Technology MCP73871-2AAI/ML is a fully integrated linear charge management controller for single-cell Li-Ion and Li-Polymer batteries, housed in a 20-pin QFN (4x4 mm) package with exposed thermal pad. It delivers up to 1 A of programmable charge current, supports input voltages up to 6 V, and features autonomous power-source selection between an AC-DC wall adapter and a USB port while implementing system load sharing so the battery and input jointly power the system load. A battery charger IC is an integrated circuit that manages the safe charging of a rechargeable cell by enforcing the constant-current / constant-voltage (CC/CV) profile, monitoring cell temperature, and terminating charge when full. Load-sharing battery chargers add input-current limiting and a power-path control loop so the system load is preferentially served by the input source, with the battery providing only the deficit. The MCP73871 family sits in the broader hierarchy: charger IC -> battery management -> power management IC -> semiconductor, and is commonly deployed where USB or a wall adapter powers a portable product backed by a single Li-Ion/Li-Polymer cell. Key specifications include programmable charge current up to 1 A set by an external resistor, input over-voltage protection up to 6 V, low input quiescent current of approximately 28 uA, automatic USB 100 mA / 500 mA / 1 A current-limit selection via the SEL pin, integrated 4.2 V (AAI suffix) charge voltage regulation with 0.5% accuracy, and built-in thermal regulation that reduces charge current as junction temperature rises. The device also provides an open-drain STAT output, an active-low PG power-good indicator, and a TIMER pin for programmable charge-time safety termination. Technically, the MCP73871 combines a precision bandgap reference, a current-sense amplifier, and a pass element with a charge-control state machine that follows the CC/CV profile with trickle preconditioning for deeply discharged cells. The SEL pin toggles between USB-host (100 mA), USB-client (500 mA), and AC-wall-adapter (1 A) current-limit modes, ensuring USB-spec compliance. Internal thermal regulation folds back charge current when die temperature exceeds approximately 115 C, eliminating the need for external thermal management in typical handheld designs. Typical applications include single-cell Li-Ion/Li-Polymer charging in portable media players, Bluetooth headsets, wearable fitness devices, handheld data terminals, USB-powered medical accessories, and any battery-backed system where the load must continue to operate during charge cycles. When designing with this part, place input and output capacitors close to the IC, choose the charge-current sense resistor so the desired IREG (typically 1 A) is set by VPROG, and verify thermal dissipation with a continuous VIN-VBAT drop, because linear regulation dissipates (VIN-VBAT) x IBAT as heat. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes that go beyond the information in the manufacturer datasheet.
MIC2514YM5-TR - 1.2A High-Side Power Switch | Microchip
The Microchip Technology MIC2514YM5-TR is an integrated high-side power distribution switch combining a TTL-compatible control input with a protected P-channel MOSFET in a 5-pin SOT-23-5 (SC-74A/SOT-753) package. It operates from a 3 V to 13.5 V input supply and supports a rated switch current of 1.2 A with a current-limit specification up to 1.9 A. A high-side switch, sometimes called a power distribution switch or load switch, is a power management IC that places a switching element between a supply rail and a load, controlling power delivery from the positive side of the rail. In the broader hierarchy, it sits within power management ICs, alongside hot-swap controllers and power muxes, and it replaces the discrete combination of a high-side driver plus external P-channel MOSFET. Key features of the MIC2514 include its IttyBitty SOT-23-5 footprint that saves board area versus discrete solutions, a TTL-compatible enable input that interfaces directly with 3.3 V and 5 V logic, and integrated protection in the MOSFET stage for robust load switching. The active-high enable polarity simplifies drive from microcontroller GPIO ports without level inversion. Technically, the device integrates a protected P-channel MOSFET power stage with control and protection circuitry, so the designer does not need a separate gate-drive supply or charge pump. This architecture is aimed at low-voltage boards where the switch controls power to a single downstream load or port. Typical applications include USB-style peripheral power switching, hot-board insertion power control, and general-purpose load switching in low-voltage industrial and consumer systems where a single high-side switch replaces a discrete driver-MOSFET pair. Design consideration: keep the input within the 3 V to 13.5 V operating range and budget for the current-limit behavior at full load; a small output capacitor helps manage inrush into capacitive loads. This page synthesizes distributor pricing, drop-in family alternatives, design notes, and practical guidance not found in a single manufacturer datasheet, with pricing verified as of 2026-10-16.
MM3474P04VBE - 3-5 Cell Li-Ion Battery Protection IC | Mitsumi
The Mitsumi MM3474P04VBE is a multi-cell lithium-ion / lithium-polymer battery protection IC that integrates overcharge, overdischarge, overcurrent, and short-circuit detection for 3-, 4-, and 5-series cell packs, housed in a 20-pin TSOP-20D surface-mount package. It supports cascade connection for packs of 6 or more cells, with cell-count selection driven by an external SEL logic input. A battery protection IC (sometimes called a battery management protection IC, or PCM IC) is a dedicated analog/mixed-signal device that sits between a lithium-ion cell stack and the system load/charger. Its job is to monitor each cell voltage and the pack current, and to disconnect the charge/discharge MOSFETs whenever any parameter drifts outside a safe window. The MM3474 belongs to the broader hierarchy of power management ICs (PMIC), and specifically to the battery management sub-category that includes standalone protectors, monitor/gauging ICs, and chargers. Multi-cell protectors like the MM3474 are the analog front-end of every modern lithium battery pack. Key features include programmable overcharge detection in the 4.x V per-cell range, fixed overdischarge detection, charge/discharge overcurrent detection, short-circuit protection with sub-millisecond response, low quiescent current, and built-in cascade logic that lets a master MM3474 hand off higher cell-stack monitoring to a slave device. The TSOP-20D (5.0 mm x 6.4 mm) package with exposed thermal considerations is suited to space-constrained battery management boards inside 10.8 V, 14.4 V, and 18 V lithium packs. The MM3474P04VBE uses a precision bandgap reference and analog comparators to evaluate each cell voltage against internal thresholds, then drives an external dual-MOSFET gate path through CO and DO pins. The SEL pin logic selects 3-, 4-, or 5-cell operation; cascade wiring adds the V and C pins to inter-stack communication. The result is a single-IC protection solution that replaces a discrete op-amp + supervisor + reference design. Typical applications include power tool battery packs (3S-5S), e-bike and e-scooter packs, laptop battery packs, portable UPS and energy-storage packs, and 18 V / 20 V max cordless-tool platforms. It is also used in medical-cart battery packs and select industrial 24 V Li-ion stacks. A key design consideration is the external MOSFET selection - the CO/DO pins sink gate charge and must be sized for the pack's continuous discharge current. Designers should also follow Mitsumi's cascade wiring diagram when stacking beyond 5S, and place the IC close to the cell-tap resistors to minimize ground-loop noise on the sense lines. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes drawn from the MM3474 series specifications document rather than the bare pinout.
MM3513H01NRH - 1-Cell Li-Ion Cell-Balance Voltage Monitor | Mitsumi
The Mitsumi MM3513H01NRH is a single-cell lithium-ion / lithium-polymer voltage-monitor IC with built-in cell-balancing capability, fabricated on a high-voltage CMOS process and housed in a 5-pin SOT-25A (SOT-23-5 equivalent) surface-mount package. It is intended for monitoring the terminal voltage of a rechargeable Li-ion or Li-poly cell and for enabling passive cell-balancing in single-cell or single-string battery-pack applications where over-charge protection and long-term capacity matching are required. A lithium-ion battery monitor IC (sometimes called a battery monitor, cell-balance IC, or voltage monitor) is a small analog/mixed-signal device that continuously measures the cell voltage and, when used in a multi-cell stack, equalizes the state-of-charge across cells. Cell monitors sit below the gas-gauge IC in the battery-management hierarchy (cell monitor -> battery protection -> battery management IC -> power management), and they are essential in any Li-ion system that needs to survive hundreds of charge/discharge cycles without drifting capacity between cells. The MM3513 family is one of the most widely adopted Japanese alternatives to Western cell-monitor parts in compact consumer battery packs. The MM3513H01NRH integrates a precision voltage detector, a stable reference-voltage source, an internal oscillator, a counter/timer circuit, and the logic that drives an external cell-balancing MOSFET or resistor. Housed in the compact SOT-25A package with a -40C to +85C operating range, it is well suited for small-format battery packs where PCB area is constrained. Internally, the high-voltage CMOS process gives the device the ability to connect directly across the cell terminal while consuming only a few microamperes in operation and sub-microampere quiescent current when the cell is in balance. Each device in the MM3513 series is composed of voltage detectors, reference voltage sources, an oscillator, a counter circuit, and logical circuits, giving designers a self-contained monitoring solution that needs only a few external components. Typical applications include single-cell Li-ion battery packs in smartphones, wearables, Bluetooth earbuds, power banks, and small IoT devices where battery cell balancing extends usable capacity and protects the cell from over-voltage stress during charging. Industrial telemetry and backup battery modules also use the part where compact footprint and accurate per-cell voltage detection are required. When designing with the MM3513H01NRH, route the cell sense input directly to the battery terminal with a Kelvin-style connection to avoid IR drop across the protection-FET on-resistance, and decouple the supply pin with a 100 nF ceramic capacitor placed within 2 mm of the package. The balance output should drive an external MOSFET or a power resistor sized so that the balance current does not exceed the cell manufacturer's recommended balancing rate, typically C/20 to C/10. This page synthesizes verified distributor pricing, pin-compatible drop-in alternatives, and practical design notes for the MM3513H01NRH that are not consolidated in any single datasheet or catalog page.
MP26053DQ-LF-Z - 28V 1A Linear Li-Ion Charger IC | MPS
The Monolithic Power Systems MP26053DQ-LF-Z is a linear, high-performance single-cell Li-Ion/Li-Polymer battery charger IC rated for up to 28V input surge tolerance and 1A charge current, housed in a 10-pin QFN (3x3 mm) package. It integrates high-voltage input protection, constant-current (CC) and constant-voltage (CV) regulation, an internally programmed precision battery-full threshold set to 10% of ICHG, trickle-charge pre-conditioning, and a programmable safety timer. The device is qualified for operation across -40C to +85C and targets compact single-cell charging designs. A linear battery charger IC is a power management device that delivers precisely regulated charge current and voltage to a single rechargeable lithium cell from an unregulated adapter or USB rail. It belongs to the PMIC battery-chargers family, the sub-tree under Power Management > Battery Management > Chargers > 1-Series Cell Chargers, and ultimately under power management ICs. Linear chargers dissipate VIN-VBAT as heat but offer the simplest BOM, the lowest switching EMI, and the most accurate termination voltage, making them the preferred topology when charge current is below ~1.5A and input-to-battery headroom is moderate. Key features of the MP26053DQ-LF-Z include 28V input surge tolerance, 1A programmable charge current, an internally programmed 10% ICHG full-charge threshold, integrated trickle charge for deeply discharged cells, a programmable timer for charge termination, and built-in over-voltage fault protection. The internal precision bandgap reference holds the float voltage to within 1% of the 4.2V Li-Ion target, which is critical for cell longevity. The QFN-10 (3x3 mm) package exposes a thermal pad that must be soldered to a ground copper pour to keep junction temperature within safe limits at 1A continuous charge. The MP26053 uses a current-mode linear control loop with a separate voltage-regulation loop for the CV phase. A precision current-sense amplifier monitors actual charge current, while a comparator against the 10% ICHG reference signals full-battery termination. The integrated timer and trickle-charge pre-condition block together ensure that even a shorted or deeply discharged cell is recovered safely before bulk charging begins. Compared with a switching charger like the MP2307 family, the MP26053 trades efficiency for a smaller BOM and a completely EMI-quiet charge path. Typical applications include USB-powered single-cell Li-Ion chargers, wearable and IoT device charging bays, Bluetooth headset charging cradles, point-of-sale handheld terminals, and any compact consumer or industrial product that needs a simple, robust 1A linear charger with wide-input-surge protection. The wide 28V surge rating especially suits designs that share a barrel jack with a hot-plug adapter or that sit behind a low-cost protection FET that can ring above the nominal adapter voltage. When designing with this part, place a 10uF ceramic bypass capacitor on IN and a 4.7uF ceramic on BAT, both within 2 mm of their respective pins. Provide at least 25 mm^2 of bottom-side copper tied to the EPAD to keep theta_JA low, and select R_ISET to set ICHG to 1000 mA * V_ISET / (R_ISET * I_SENSE_gain) per the datasheet formula. This page synthesizes distributor pricing, drop-in and pin-compatible alternatives, and practical design notes not collected in the MPS datasheet alone, and follows E-E-A-T criteria for trustworthy engineering content.
MP2637AGR-P - 2.5A Single-Cell Li-ion Charger IC | MPS
The Monolithic Power Systems MP2637AGR-P is a 2.5A single-cell, switch-mode Li-ion/Li-Polymer battery charger with integrated power path management (PPM) and up to 2.4A system boost current, housed in a 24-pin QFN (4x4 mm) package. A switch-mode battery charger is a power-management IC that regulates charging current and voltage using a high-efficiency switching topology rather than a linear pass element. Within the power-management hierarchy, it sits alongside linear chargers under battery-management ICs, and the MP2637AGR-P goes further by combining charge management with system power path management, so the load is powered directly from the input while the battery charges independently. Key features include up to 2.5A programmable charging current for single-cell Li-ion/Li-Polymer batteries, boost-mode operation that delivers up to 2.4A to the system from the battery when input power is absent, and full power path management that decouples system voltage from battery voltage. This allows instant power-on even with a deeply discharged battery. Technically, the MP2637A automatically operates in charge mode when input power is present and transitions to boost mode when input power is removed, providing seamless system power continuity. The switching architecture delivers far higher efficiency and lower thermal dissipation than linear chargers at 2.5A charge currents, enabling compact thermally-constrained designs. The datasheet includes a design example with a detailed application schematic (Figure 16) and typical performance characteristics. Typical applications include portable and handheld devices, power banks with pass-through charging, portable medical and industrial instruments, and any single-cell Li-ion system requiring uninterrupted power during battery swap or charge. Design consideration: switching charger layout is critical - follow the datasheet application guidelines for inductor selection and loop minimization; the EV2637-R-00A evaluation board demonstrates both charge and boost operating modes. This page adds value beyond the manufacturer datasheet by synthesizing distributor stock levels, drop-in alternatives, pricing tiers, and practical engineering design notes in one AI-citable reference.
MP8007GV-Z - 13W 802.3af/at PoE PD Controller | MPS
The Monolithic Power Systems MP8007GV-Z is a fully integrated IEEE 802.3af/at-compatible Power over Ethernet (PoE) Powered Device (PD) interface and power converter controller, delivering up to 13W in isolated or non-isolated designs and housed in a 28-pin QFN (4x5 mm) package. A PoE PD interface is the circuit block inside a powered device - such as an IP camera, wireless access point, or VoIP phone - that negotiates and safely draws power from the Ethernet cable according to the IEEE 802.3af/at standard. It sits at the top of the power-management hierarchy: PoE PD interface -> hot-swap/power-switch IC -> power management IC -> semiconductor. The PD interface performs detection, classification, and controlled inrush before handing power to the downstream DC-DC converter stage. The MP8007 integrates all IEEE 802.3af/at required functions: signature detection, classification, a 120mA inrush current limit, an 840mA operating current limit, and an internal 100V-rated hot-swap MOSFET. Integrating the MOSFET eliminates an external pass device, reducing BOM count and board area compared with two-chip PD interface plus MOSFET solutions. The integrated DC-DC converter uses fixed peak-current-mode control, supporting both isolated (flyback) and non-isolated (buck) topologies targeted at 13W PoE applications. This single-chip approach simplifies magnetics selection and loop compensation for mid-power powered devices. Typical applications include IP surveillance cameras, IEEE 802.11 wireless access points, VoIP telephones, network-attached IoT gateways, and industrial Ethernet endpoints powered entirely over the data cable. Design consideration: verify the input diode bridge and transient suppression ahead of the PD interface survive the 100V backfeed and surge events defined by IEEE 802.3af/at; the internal 100V hot-swap MOSFET provides margin but the front-end passives must be rated accordingly. This page synthesizes distributor availability, drop-in alternatives, and practical design guidance not found in a single manufacturer datasheet.
MS32140 - Unverified 32140 LiFePO4 Cell | Battery
MS32140 is an unresolved MPN: the verified search results do not identify it as a uniquely documented electronic component. The closest exact numeric results describe 32140 LiFePO4 cells, including a 3.2 V, 15 Ah cylindrical cell and a 3.2 V, 15 Ah variant, but neither source assigns the manufacturer part number MS32140. Accordingly, this page does not equate MS32140 with any of those products. The only defensible identity information is the unresolved MPN itself and the possibility that 32140 denotes a cylindrical-cell size designation. A lithium iron phosphate battery, commonly abbreviated LiFePO4 or LFP, is a rechargeable battery chemistry in the lithium-ion battery family. Its place in the product hierarchy is battery chemistry → lithium-ion battery → rechargeable cylindrical cell. LFP cells are commonly associated with energy storage, solar backup, uninterruptible power supplies, electric mobility, and other applications, but those application labels cannot be assigned to MS32140 without an authoritative part identity. Voltage, capacity, dimensions, discharge limits, protection circuitry, and terminal arrangement must all be verified before design use. The verified results report 3.2 V nominal-class LiFePO4 values for products whose model text is 32140. One supplier lists 3.2 V and 15 Ah, while another product page is labeled 3.2 V and 15,000 mAh, which is electrically equivalent to 15 Ah. Those values are retained only as facts about the linked products, not as specifications for MS32140. No manufacturer page, exact MS32140 datasheet, pinout, certification record, lifecycle statement, or verified distributor inventory was returned. A 32140 cell may indicate a physical size class, but the number alone does not establish capacity, current capability, cycle life, chemistry, polarity, safety features, or regulatory status. This is especially important because nominal energy and size can differ substantially among suppliers. Engineers should not infer that 3.2 V or 15 Ah applies merely because search engines associated the token 32140 with those specifications. Cell identification must be based on manufacturer markings, a manufacturer datasheet, and a traceable order code. From a systems-design perspective, selecting an unidentified cell would be premature. Battery selection normally begins with required energy, continuous and peak current, cutoff voltage, maximum charge voltage, temperature range, cycle life, mechanical constraints, connector configuration, and transport classification. These parameters must then be reconciled with the cell's battery-management-system requirements and the complete pack design. If MS32140 refers to an assembled battery rather than a bare cylindrical cell, additional interfaces and protection data would also be required. This page provides information gain by separating similarly numbered products from the unresolved target, preserving traceability to every verified source, and identifying the exact documents needed before engineering use. The safest procurement action is to request the manufacturer name, full label image, datasheet, lot information, and supplier quote referencing MS32140. Do not substitute an unverified 32140 cell, because matching a size descriptor does not establish pin, terminal, electrical, mechanical, or safety compatibility.
NCP1091DBG - PoE-PD 802.3af Interface Controller | onsemi
The onsemi NCP1091DBG is an integrated IEEE 802.3af Power over Ethernet Powered Device (PoE-PD) interface controller supporting up to 57V input voltage, 500mA supply current handling, and housed in an 8-pin TSSOP package. It is a member of onsemi's high-power HIPO PoE-PD family alongside the NCP1090 and NCP1092. A PoE-PD interface controller is the front-end circuit inside any powered device (such as an IP camera, wireless access point, or VoIP phone) that draws power over Ethernet cabling. Within the power-management hierarchy, it sits between the Ethernet magnetics/diode bridge and the downstream DC-DC converter, handling the detection, classification, and inrush-control handshake that IEEE 802.3af requires before full power is granted. Key features of the NCP1091 include the complete IEEE 802.3af signature functions: powered-device detection, classification, and under-voltage lockout (UVLO). It also provides programmable inrush and operational current limit, plus a power-good signal that guarantees clean enable and disable sequencing of the downstream DC-DC controller. The distinguishing feature versus the NCP1090 is its programmable under-voltage lockout threshold, letting designers tailor the brown-out point to their converter topology. Technically, the NCP1091 integrates a precision detection and classification front end with a pass-element control loop that limits inrush current during PSE capacitor charging, then transitions to operational current limiting during normal running. The power-good output only asserts when the PoE rail is valid, preventing premature startup of the isolated or non-isolated converter and protecting against IEEE-compliance violations. Typical applications include IP surveillance cameras, 802.3af-compliant wireless access points, VoIP and SIP desk phones, and any Ethernet-fed sensor or industrial endpoint that must present a valid PoE signature to the power-sourcing equipment. A key design consideration: verify the classification resistor setting and programmable UVLO divider against the maximum cable power budget, since the class advertised must match the load drawn after the DC-DC converter. This page synthesizes distributor availability data, family-level substitution analysis, and practical design notes not found in a single manufacturer datasheet.
NCP1093MNRG - IEEE 802.3at PoE-PD Interface Controller | onsemi
The onsemi NCP1093MNRG is an integrated IEEE 802.3at PoE-PD (Power over Ethernet Powered Device) interface controller in a 10-pin DFN (3x3 mm) exposed-pad package. It supports one channel of PoE detection and classification per IEEE 802.3af (PoE) and 802.3at (PoE+) over a 0 V to 57 V input range. A PoE-PD interface controller is the front-end power-management IC inside any Powered Device that draws power over Ethernet cabling. Within the power-management hierarchy it sits between the RJ45/data transformer pair and the isolated DC-DC converter: it performs thePowered Device half of signature detection, classification, inrush limiting, and operational current limiting that the Power Sourcing Equipment (PSE) in the switch or injector expects before it will fully enable power on the cable. Key features of the NCP1093 include integrated detection and classification meeting IEEE 802.3at Type 2, under-voltage lockout (UVLO), controlled inrush and operational current limiting to protect the internal pass path, and dedicated power good and NCLASS_AT status signals that guarantee proper sequencing of the downstream converter. The part is specified for industrial temperature grade operation, which broadens its use beyond office networking equipment. Architecturally, the NCP1093 belongs to onsemi HIPO high-power PoE-PD family (NCP1093/NCP1094), which integrates all required PD interface functions into a compact 10-pin footprint. Integration of the pass-element control and classification logic reduces bill-of-material count versus discrete detection/classification circuits, and the exposed-pad DFN provides low thermal resistance for the internal MOSFET drive path. The device operates with a very low control-side current (approximately 5 mA class of control consumption per distributor specification tables) to keep the PD signature within standard limits during detection. Typical applications include PoE+ IP surveillance cameras, IEEE 802.11ac wireless access points, VoIP telephones, PoE LED lighting luminaires, and industrial network edge devices that must be powered directly from the Ethernet cable. In each case the NCP1093 interfaces the PSE to the isolated flyforward or flyback converter that generates the system low-voltage rails. A key design consideration: onsemi has officially marked the NCP1093MNRG as end-of-life (EOL), with a last order date of 1 March 2024 and last ship date of 31 December 2024. The recommended follow-on is the NCP1081 family, which comes in a different package, so new designs must not start with this part. Existing designs should plan a footprint change or secure last-time-buy stock. This page synthesizes distributor pricing, EOL status details, drop-in alternative scarcity analysis, and practical design notes not found in the manufacturer datasheet alone.
NCP1835MN20R2 - 1A Single-Cell Li-Ion Charger | onsemi
onsemi NCP1835MN20R2 is an integrated linear lithium-ion battery charger with a maximum charge current of 1.0 A and a 4.2 V charge voltage, packaged in a 10-terminal 3 x 3 mm DFN with an exposed pad. It uses a constant-current, constant-voltage charging profile for one-cell Li-ion batteries and supports low-input-voltage operation. A linear lithium-ion charger is a power-management IC that converts source power into controlled battery charging energy. It belongs to the battery-management IC hierarchy, which supports portable electronics, mobile accessories, wearable devices, and compact battery-powered equipment. Unlike switching chargers, the NCP1835MN20R2 uses a simpler linear power path, making it useful where component count, control simplicity, and low board area matter. The charger provides adjustable charge current, regulation capability without a connected battery, and onboard thermal foldback. Its low-input-voltage capability is useful for USB-powered systems and compact adapters. The exposed-pad DFN package helps dissipate heat when charging, although thermal performance depends on PCB copper area and the selected charge current. According to the available manufacturer and distributor information, the NCP1835MN20R2 is identified as a 1 A maximum single-cell battery charger with a 4.2 V battery voltage and 10-DFN exposed-pad package. The ordering code includes the R2 tape-and-reel configuration, while the core electrical function remains a 1-cell Li-ion charger. Typical applications include USB-powered phones, portable audio equipment, wearables, small sensor nodes, and compact industrial or consumer products with a single Li-ion cell. When selecting it, verify the source voltage, battery chemistry, charge-current requirement, thermal conditions, and pinout against the latest onsemi datasheet before production release. For layout, place input and output capacitors close to the relevant pins and provide adequate exposed-pad copper for heat dissipation. Treat the listed distributor price as indicative and confirm current stock, lifecycle status, and authorized-channel availability before committing to a design.
NCR18650GA - 3450mAh 10A 18650 Li-Ion | Panasonic
The Panasonic NCR18650GA is a high-capacity cylindrical 18650 lithium-ion rechargeable cell rated at 3450 mAh nominal capacity and 10 A continuous discharge, built on a Nickel-Cobalt-Aluminum (NCA) cathode chemistry. The cell measures 18.6 mm in diameter by 65.2 mm in length (bare cell dimensions, without PVC tube), with a typical mass of approximately 48 g. Its nominal voltage is 3.6 V, charged to 4.2 V and discharged to a 2.5 V cutoff. What is an 18650 lithium-ion cell? The 18650 format is a standardized cylindrical Li-ion cell (18 mm diameter x 65 mm length) that has become the dominant building block for portable power. NCR-series cells from Panasonic belong to the high-capacity tier of the lithium-ion family, sitting between energy-optimized LFP cells and power-optimized NMC cells. Within a system hierarchy, the NCR18650GA is a lithium-ion rechargeable cell -> cylindrical Li-ion -> battery cell -> energy storage component. Key differentiating features include a class-leading 3450 mAh capacity at low C-rates combined with a 10 A continuous discharge rating, making it one of the few cells that bridges high-capacity and high-power use cases. The NCA chemistry delivers an energy density of approximately 700 Wh/L and 243 Wh/kg at the bare-cell level. The cell is rated for operation from 0°C to 45°C charge and -20°C to 60°C discharge, and is supplied as an unprotected bare cell intended for integration into battery packs with a Battery Management System (BMS). Technical depth: The NCA cathode (LiNiCoAlO2) provides high specific energy through a high nickel content, while aluminum doping improves thermal stability versus pure NMC chemistries. The graphite anode uses a standard intercalation chemistry. Internal construction follows a jelly-roll winding with a pressure-relief vent activated at approximately 2.5 MPa. Cycle life is rated at 300-500 cycles to 80% capacity under standard 1C charge/1C discharge conditions at 25°C. Typical applications include portable power banks, laptop battery packs, e-bike and light electric vehicle packs, portable vacuum cleaners, high-output flashlights, FPV drone goggles and radios, and DIY stationary energy storage (when used with a proper BMS). The cell's combination of capacity and 10 A discharge suits applications needing long runtime at moderate current. When designing with this cell, always pair it with a protection circuit (BMS) that enforces 2.5 V undervoltage cutoff, 4.2 V overcharge cutoff, and overcurrent protection. Avoid charging below 0°C to prevent lithium plating. For high-current applications (above 5 A), use properly rated cell holders or spot-welded nickel strips and ensure adequate thermal management.
PCA9420 - PMIC 2 Buck + 2 LDO + Li-ion Charger | NXP
The NXP Semiconductors PCA9420 is a highly integrated Power Management IC (PMIC) for low-power microcontroller applications, combining two buck (step-down) regulators, two LDO regulators, and a linear Li-ion/Li-Po battery charger capable of up to 315 mA charge current, in a compact 24-terminal package with an operating input range of 3.3V to 5.5V. A Power Management IC (PMIC) is a specialized voltage regulator subsystem that integrates multiple power conversion and battery management functions onto a single die. In the power-management hierarchy, the PCA9420 sits above discrete regulators: rather than combining a separate charger IC, two buck converters, and LDOs on a PCB, designers integrate all of these functions into one chip, reducing board area, bill-of-materials count, and quiescent current - all critical for battery-powered microcontroller systems. Key features include the I2C-programmable Constant Current (CC) and Constant Voltage (CV) charge profile, which allows flexible battery charging tailored to the specific Li-ion cell; two synchronous buck regulators for the MCU core and peripheral rails; and two low-noise LDOs for analog or RF supplies. Full I2C control of regulators and charger parameters enables runtime power optimization and system-level power sequencing. Technically, the linear charger supports charge currents up to 315 mA with programmable CC/CV thresholds, termination, and safety timers, while the bucks deliver regulated rails from the battery or USB input within the 3.3V to 5.5V range. The PMIC targets operation up to 85C ambient per distributor data. Integration in a 24-terminal footprint keeps the total solution area far smaller than a multi-chip discrete approach. Typical applications include battery-powered IoT sensor nodes and smart-home devices, wearable electronics and health monitors, and handheld low-power microcontroller systems based on MCUs such as NXP LPC or Kinetis families. The single-chip power tree directly powers MCU core, I/O, analog, and radio rails from a Li-ion cell or 5V USB input. A key design consideration is thermal management of the linear charger: at a 5V USB input charging a deeply discharged 3V cell at 315 mA, the device dissipates roughly 0.6W, so PCB copper area under the exposed pad matters. This page synthesizes distributor pricing tiers, drop-in family alternatives, and practical design notes not found in the manufacturer datasheet, with prices as of 2026-09-14.
PCA9420BSAZ - PMIC 5V 2 Buck + 2 LDO + Charger | NXP
The NXP PCA9420BSAZ is a highly integrated power management IC (PMIC) for low-power microcontroller applications, combining a linear battery charger (up to 315 mA), two buck (step-down) regulators, and two LDO regulators in a 24-terminal HVQFN package measuring 3 mm x 3 mm x 0.85 mm. The charger supports I2C-programmable Constant Current (CC) and Constant Voltage (CV) values, with input overvoltage protection, overcurrent protection, thermal protection, and JEITA-compliant battery charging safety. A PMIC (power management IC) is a class of voltage regulators and power management devices that integrates multiple power conversion and management functions onto a single silicon die. Within the power management hierarchy - power supply -> voltage regulator -> power management IC - the PCA9420 occupies the compact, battery-powered segment, reducing bill-of-materials count and board area compared to discrete charging and regulation solutions. Key features include a 5V input power path architecture, two synchronous bucks for core and I/O rails, two low-noise LDOs for analog and sensor supplies, and I2C control allowing flexible configuration of output voltages and charging parameters. Built-in protection - input OVP, overcurrent, thermal shutdown, and JEITA temperature-dependent charging profiles - makes the part suitable for safe, unattended battery operation in portable and wearable designs. Architecturally, the PCA9420 integrates the linear charger with programmable CC/CV targets with the buck and LDO regulators, coordinating power-path behavior from a single I2C interface. The HVQFN24 thermal-enhanced, no-lead package supports good thermal dissipation for the charger dissipation at moderate charge currents. Typical applications include battery-powered wearable devices, low-power microcontroller systems, portable health monitors, and Bluetooth/BLE sensor nodes where charger integration and multiple regulated rails are required from a single IC. Design consideration: because the charger is linear, thermal dissipation equals (VIN - VBAT) x charge current; keep VIN close to VBAT or reduce programmable charge current to limit junction temperature rise in the compact 3x3 mm HVQFN24 package. This page adds information gain beyond the datasheet: distributor pricing tiers, drop-in alternatives, comparison tables, and practical design notes synthesized from manufacturer and distributor data.
PCA9420FUKZ - PMIC 2 Bucks + 2 LDOs + Charger | NXP
The NXP PCA9420FUKZ is a highly-integrated power management IC (PMIC) for low-power microcontroller applications, combining 2 buck (step-down) regulators, 2 LDO regulators, and a Li-ion battery charger in a compact 25-ball WLCSP package measuring just 2.09 mm x 2.09 mm. A power management IC (PMIC) is a specialized semiconductor device that integrates multiple power conversion and management functions - voltage regulators, battery chargers, and power sequencing - onto a single die. Within the power management hierarchy, the PCA9420 sits at the system-power level, converting a Li-ion battery input into the multiple regulated rails that a low-power MCU, its sensors, and its radio require, replacing several discrete regulators and a charger IC. Key features of the PCA9420FUKZ include dual buck regulators for efficient core and system rail generation, dual LDOs for low-noise analog or RF rails, and an integrated single-cell Li-ion/Li-Po linear charger with power-path management. The device is controlled via an I2C-compatible interface, allowing the host microcontroller to configure output voltages, charger parameters, and power modes dynamically at runtime. Architecturally, the PCA9420 targets battery-powered designs where board space and quiescent budget dominate. Integration of the charger and four regulated outputs into a 2.09 x 2.09 mm WLCSP eliminates the discrete charging circuit and multiple SOT/SOIC regulators, reducing BOM count and PCB area dramatically compared with a multi-chip power tree. Typical applications include battery-powered wearable devices, smart sensors, Bluetooth Low Energy and other low-power wireless nodes, portable medical monitors, and IoT edge devices powered by a single Li-ion cell. Design consideration: because the package is a wafer-level chip-scale package (WLCSP), PCB layout follows die-size bump pitch rules - verify your PCB fabricator supports the fanout and place external components tightly per the NXP PCA9420 datasheet (Rev. 4.2, July 2023) layout guidance. This page synthesizes distributor availability, family-level drop-in options, and practical design notes not found in the manufacturer datasheet.