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TPS26631PWPR - 60V 6A eFuse HTSSOP-20 | Texas Instruments
The Texas Instruments TPS26631PWPR is a 4.5-V to 60-V, 31mΩ, 0.6-A to 6-A industrial eFuse (electronic fuse) with integrated power-limiting and surge protection, packaged in a 20-pin HTSSOP (PWP) with PowerPAD. The device integrates a 31 mΩ N-channel hot-swap FET, supports reverse polarity and reverse current blocking with an external N-FET, and offers ±7% accurate adjustable current limit from 0.6 A to 6 A. Absolute maximum input rating is 67 V, providing margin above the 60-V nominal operating range. An electronic fuse (eFuse) is a semiconductor protection device that replaces legacy mechanical fuses and PTC resettable devices. Compared with discrete hot-swap designs (MOSFET + sense resistor + op-amp + comparator), an integrated eFuse combines inrush limiting, current limit, over-voltage clamp, thermal fold-back and fault output in a single IC. eFuse devices sit in the protection hierarchy between TVS/TVS-diode (transient suppressor) and discrete hot-swap controllers, and they are classified within power management ICs for industrial systems. They are widely adopted in 24-V factory automation backplanes, 48-V telecom and battery-powered industrial loads where hot-plug, surge and reverse-polarity events are routine. Key features of the TPS26631PWPR include programmable output power limiting (dV/dT controlled turn-on), integrated surge protection, fault output flag, thermal shutdown, and ±7% ILIM accuracy over temperature. The HTSSOP-20 PowerPAD provides a low thermal resistance path, enabling continuous 6-A operation on moderate copper area. Power limiting lets the device ride through large transient overloads without nuisance tripping while still protecting upstream supplies. The TPS26631PWPR uses TI's HotSwap architecture with an integrated charge pump gate driver for the internal N-FET. The reference design supports either independent mode (ILIM resistor to GND) or closed-loop power limiting via the PLIM resistor. A fault timer programs the retry/delay behavior after an OCP/OVP event, and the IMON pin provides analog load-current monitoring for system telemetry. Typical applications include 24-V industrial PLC I/O protection, factory-automation sensor and actuator rails, 48-V telecom rectifier secondary protection, motor-driver pre-regulation, and battery-powered industrial equipment with hot-plug battery packs. The wide 4.5-V to 60-V operating window also suits solar and renewable energy harvesters. Designers should size upstream capacitance so that inrush (dV/dT programmed by CDEV) does not exceed the current-limit threshold at power-on, and they should connect the PowerPAD to a sufficient copper pour to keep junction rise below 100 °C at 6-A continuous load. This page synthesizes distributor pricing, drop-in alternatives, application reference designs, and PCB/thermal design notes not collected in any single source - the manufacturer datasheet remains the authoritative reference for final design.
TPS26633PWPR - 60V 6A eFuse HTSSOP-20 | Texas Instruments
The Texas Instruments TPS26633PWPR is a 4.5V to 60V, 31mΩ, 0.6A to 6A industrial eFuse with output power limiting and surge protection, housed in a 20-pin HTSSOP (PWP) package with exposed thermal pad. It integrates a 60V hot-swap FET, supports reverse polarity protection with an external N-channel FET, and delivers ±7% accurate adjustable current limit. Absolute maximum input voltage is rated at 67V, allowing robust transient tolerance on industrial 24V and 48V buses. An eFuse (electronic fuse) is a semiconductor-based circuit protection device that replaces traditional mechanical fuses, PTCs, and discrete hot-swap circuits. It combines a power MOSFET, current-sense amplifier, and control logic in one IC, sitting in the power management hierarchy between discrete MOSFETs and full system PMICs. Compared with a PTC or polyfuse, an eFuse offers precise, programmable current limit, fast fault response, and automatic retry, and it does not require physical replacement after a trip event. Key features of the TPS26633PWPR include 4.5V to 60V operating range, integrated 31mΩ RON hot-swap FET, 0.6A to 6A adjustable current limit with ±7% accuracy, output power limiting for surge compliance, reverse current blocking, fault output indicator, and thermal shutdown. The HTSSOP-20 PowerPAD package provides a low thermal resistance path for sustained 6A operation, and the device operates from -40C to +125C junction temperature. The device uses TI's hot-swap controller architecture with charge-pump gate drive and precision current sensing, providing monotonic dV/dt controlled startup to limit inrush current. The output power-limit feature clamps transient power to a programmed threshold for IEC 61000-4-5 surge compliance, while the timer-based fault response prevents nuisance tripping on capacitive loads. Typical applications include industrial PLC I/O protection, 24V factory automation power rails, motor-drive auxiliary supplies, building-automation controllers, and telecom 48V line-card protection. The wide input range makes it well suited for systems powered from 24V industrial buses or 48V PoE/PoE+ sources where input transients and reverse-wiring events are common. When designing with the TPS26633PWPR, place input and output bulk capacitors close to the IC, connect the PowerPAD to a 1-square-inch copper pour, and program the current limit with a 1% resistor to achieve the ±7% accuracy. Always verify SOA under worst-case VIN and I²t conditions in the datasheet. This page synthesizes distributor pricing, drop-in HTSSOP-20 alternatives, and practical design notes not found in the manufacturer datasheet.
TPS26633PWPT - 60V, 6A eFuse w/ Surge Protection | Texas Instruments
The Texas Instruments TPS26633PWPT is a 60-V, 6-A industrial eFuse (electronic fuse) integrated circuit housed in a 20-pin HTSSOP power package with an integrated 31-mΩ MOSFET. It operates from a 4.5-V to 60-V input range, delivers programmable output current limiting between 0.6 A and 6 A, and offers output power limiting plus surge protection, all in a single-chip solution. This combination simplifies hot-swap, inrush control, and field-protected power path designs that previously required multiple discrete components. An eFuse (electronic fuse) is a semiconductor-based protection device that replaces traditional PTC fuses, thermistors, and discrete hot-swap controller plus FET combinations. As a member of the broader hot-swap controller and power-path protection IC category within power management, an eFuse integrates current sensing, MOSFET switching, and fault recovery logic into one package, giving system designers faster response, programmable behavior, and resettable protection that does not require manual replacement after a fault event. Compared with a fuse + TVS + load-switch stack, a single eFuse reduces board area, improves diagnostic capability, and enables I2C telemetry or pin-strapped configuration. Key features of the TPS26633PWPT include a 31-mΩ on-resistance integrated N-channel MOSFET, programmable current limit from 0.6 A to 6 A using an external resistor, output power limiting (constant-power mode), surge protection with adjustable slew rate, integrated thermal shutdown, and fault output indication. The device also offers reverse-current blocking when paired with an external B-FET driver pin, and input under-voltage lockout with programmable thresholds. The TPS26633 architecture uses a charge-pump-driven N-channel MOSFET, a high-side current-sense amplifier, and a state machine that handles inrush, steady-state, and fault conditions. Its constant-power foldback mode allows higher transient currents for capacitive loads while preventing SOA violations at elevated input rail voltages, a behavior that traditional fuses and PTCs cannot emulate. Typical applications include industrial 24-V PLC and sensor power rails, factory automation I/O modules, building automation controllers, telecom secondary-side hot-swap, and battery management systems where a resettable, programmable protection element is preferred over a one-shot fuse. When laying out the PCB, place the eFuse close to the input connector to maximize surge absorption, and provide a thermal copper pour under the PowerPAD exposed pad to keep junction temperature within the 150 °C maximum under sustained fault events.
TPS26636PWPR - 60V, 6A eFuse with Power Limit & Surge Protection
The Texas Instruments TPS26636PWPR is a 4.5-V to 60-V, 31-mΩ, 0.6-A to 6-A integrated eFuse (electronic fuse) with output power limiting and surge protection, housed in a 20-pin HTSSOP (PWP) package with an exposed thermal pad. It combines a 31-mΩ N-channel FET, programmable current limit, true RMS power-limiting, and surge protection in a single hot-swap IC, eliminating the discrete MOSFET + supervisor + TVS combination typically required for 24-V/48-V industrial input protection. An eFuse (electronic fuse) is a solid-state circuit-protection IC that replaces traditional PTC fuses, polyfuses, or mechanical circuit breakers with an integrated MOSFET and analog control loop. It monitors input voltage, load current, and junction temperature, and reacts within microseconds to overcurrent, short-circuit, overvoltage, and thermal events. Within the power-management IC hierarchy, eFuses sit between ideal-diode/ORing controllers and hot-swap controllers, providing fast, resettable protection for downstream DC rails. The TPS26636 is specifically classified as a power-limiting eFuse, meaning it can clamp sustained output power rather than just current. Key specifications include 4.5 V to 60 V operating input range, 0.6 A to 6 A adjustable current limit (set by ILIM pin resistor), 31-mΩ typical on-resistance, integrated surge protection, programmable inrush slew rate via dVdT pin, load current analog output (IMON), fault output (FLTb), and reverse-current blocking when reverse-current protection is required. The -40 °C to +125 °C junction temperature range and 20-HTSSOP PowerPAD package with low θJA support demanding industrial and telecom environments. Architecturally, the TPS26636 uses a charge-pump-driven N-channel MOSFET, a precision current-sense amplifier, an internal bandgap reference, and a configurable power-limit engine. Power limiting is computed as an analog multiplier of VIN × IOUT, allowing the device to fold back current at high line voltage, protecting upstream wiring from over-dissipation. The integrated TVS-style surge clamp and reverse-blocking comparator remove external TVS/MOSFET pairs from the BOM, which is a significant board-area and reliability win. Typical applications include 24-V industrial PLC I/O, factory-automation sensor backplanes, 48-V telecom rectifier secondary protection, motor-drive auxiliary rails, e-mobility accessory power, and any 24-V/48-V distributed-bus system where sustained fault energy must be bounded. The TPS26636 is also widely used as a USB-PD sink protection element at the 20-V/5-A tier. When laying out the PCB, place input/output ceramic capacitors within 5 mm of their respective pins and stitch the thermal pad to a copper pour of at least 1 sq. inch on each layer, plus thermal vias in a 1.2-mm grid, to keep the 31-mΩ FET below thermal shutdown at maximum dissipation. The IMON output can drive an ADC directly for telemetry - this is rare in discrete-fuse replacements. This page synthesizes distributor pricing, drop-in alternatives, and practical layout notes that go beyond the manufacturer datasheet to help procurement and design engineers evaluate the TPS26636PWPR for industrial protection designs.
TPS26750ASRSMR - USB-C PD 3.2 EPR 240W Controller | TI
The Texas Instruments TPS26750ASRSMR is a standalone USB Type-C and USB Power Delivery (PD) 3.2 controller with integrated power switches, optimized for Extended Power Range (EPR) dual-role-port (DRP) power applications up to 240W (48V/5A) in a 32-pin VQFN (4x4 mm) package. As the A-variant of the TPS26750 family, it is PD3.2 EPR-compatible and highly integrated for USB-C Power Delivery systems that require extended power range support. A USB Type-C PD controller is an interface and power-management IC that manages CC-line communication, cable attach/detach detection, power-role swapping, and PD message negotiation between two USB-C devices. Within the system hierarchy, it sits between the physical USB-C connector and the DC-DC conversion stage, acting as the protocol brain that tells the power stage what voltage and current to deliver. It belongs to the broader categories of USB interface ICs, power management ICs, and specialized power PMICs. Key features include USB PD 3.2 compliance with 240W Extended Power Range support, integrated power switches that reduce external BOM count, dual-role port operation allowing the device to act as either power source or sink, and standalone operation that removes the need for an external MCU in many designs. The high integration level simplifies layout and shortens design cycles for high-power USB-C endpoints. Technically, the TPS26750A handles EPR negotiation up to 48V, managing CC-line BMC and Biphase Mark Coding signaling per the USB PD 3.2 specification. The integrated switches handle VBUS path control, and the controller supports firmware updating so OEMs can adapt PD behavior in the field. According to the TI product page, the device is described as a highly integrated standalone controller optimized for EPR DRP power applications. Typical applications include laptop and notebook chargers, power bricks and adapters, docks and monitors, and high-power USB-C sink devices such as monitors and eGPU enclosures. Any system moving up from 100W SPR designs to 240W EPR designs benefits from this controller class. A key design consideration is that EPR operation at 48V/5A demands careful VBUS trace spacing, connector EPR-capable rating, and thermal validation of the integrated power path; SPR-only designs can consider the TPS26750SRSMR variant instead. This page synthesizes distributor pricing tiers, drop-in family alternatives, and practical design guidance not consolidated in the manufacturer datasheet.
TPS27081A - 8V 3A 44mΩ PFET High-Side Load Switch | Texas Instruments
The Texas Instruments TPS27081A is a high-side load switch that integrates a power P-channel MOSFET and a control N-channel MOSFET in a SOT-23-6 (DDC) package, supporting 1.2V to 8V input and up to 3A continuous load current. Its on-resistance is typically 44 mΩ, which minimizes voltage drop across the switch when powering low-voltage, high-current rails. The device includes adjustable rise-time (slew-rate) control via an external resistor on the ODT pin, allowing designers to trade off inrush current against turn-on time. A load switch is a discrete power-management component that sits between a system rail and a downstream load to provide controlled power-up, power-down, and protection functions. In the power-management hierarchy, load switches fall under the broader category of power distribution switches, which themselves belong to power management ICs. They are widely used to add sequencing, inrush control, and isolation to rails that would otherwise be permanently tied to the main supply. Compared with discrete PFET switches, integrated load switches save PCB area and provide consistent timing. Key features include 1.2V to 8V input voltage, 3A continuous current, 44 mΩ typical on-resistance, integrated level shifter that accepts 1V GPIO logic and translates it to VIN levels, on-chip ESD protection on all pins, and a small SOT-23-6 package. The device supports active-high ON/OFF control via a single logic input. The level-shifter architecture lets a 1.2V, 1.8V, 3.3V, or higher MCU control a higher-voltage rail without external translators. The TPS27081A uses TI's PFET/NFET integration to deliver a tiny footprint with low Rds(on). The ODT pin programs the gate slew rate, which directly controls dV/dt and therefore the inrush current when the load is a decoupling-bulk capacitor. Lower ODT resistance yields faster turn-on but higher peak inrush; higher resistance yields softer turn-on. Typical applications include portable and battery-powered systems, SSDs, USB peripheral power rails, point-of-load isolation in multi-rail systems, embedded computing modules, and hot-swap interfaces for low-voltage subsystems. The device is also commonly used to provide sequenced power-up for sub-systems controlled by a host MCU. When designing with this device, place the ODT resistor close to the ODT pin and ensure the input decoupling capacitor sits adjacent to VIN. Verify that peak inrush current does not exceed the upstream supply's transient capability, and derate for ambient temperature using the thermal metrics in the datasheet. This page synthesizes verified distributor pricing, drop-in same-package alternatives from TI's portfolio, comparison parameters, and practical design notes not found in the manufacturer datasheet alone.
TPS27082L - 8V, 3A PFET Load Switch w/ Adj. Slew Rate | TI
The Texas Instruments TPS27082L is an 8-V, 3-A, 44-mΩ high-side load switch with adjustable rise time, fast transient isolation, and hysteresis control, housed in a 6-pin TSOT-23 (DDC) package. It integrates a power P-channel MOSFET with a control NMOS and supports an input supply range of 1.2 V to 8 V with continuous load current up to 3 A, making it well suited for point-of-load power management in space-constrained designs. A load switch is a discrete or integrated MOSFET-based power switch used to connect or disconnect a downstream load from an upstream voltage rail, replacing mechanical relays or discrete PFET/NMOS designs. Load switches fall under the broader power management hierarchy: load switch → power distribution switch → hot-swap controller / power-path manager, commonly used to sequence rails, isolate transients, and reduce quiescent leakage in battery-powered systems. The TPS27082L's P-channel topology drives the gate from an internal charge pump referenced to VIN, eliminating the need for a higher-voltage bias rail. Key features include a low 44 mΩ on-resistance at VIN = 5 V, configurable inrush slew rate via an external R1/C1 network, fast transient isolation (>40 dB attenuation of VIN step transients when the PFET is OFF), and a hysteretic ON/OFF control threshold to prevent chattering near the switch point. An open-drain Power Good (PGOOD) output is asserted when VOUT reaches approximately 90% of VIN. Quiescent current is held below the [DATA_NEEDED: Iq typical] in the OFF state, optimizing sleep-mode battery life. The architecture uses a single P-channel MOSFET for the main power path and a separate NMOS for level-shifted gate drive. The TPS27082L integrates a controlled soft-start mechanism via the R1/C1 timing network, limiting di/dt at turn-on and therefore the inrush current drawn by downstream bulk capacitors. The hysteretic comparator prevents multiple transitions when VIN ramps slowly through the ON threshold. Typical applications include power distribution in solid-state drives (SSD), hard-disk drives (HDD), notebook and tablet platforms, multi-rail sequencing in industrial PCs, USB port power switching, and battery-powered consumer devices that require sleep-mode isolation. When designing with TPS27082L, place the R1/C1 timing components close to the device pins. Adding a 1 μF C1 can extend rise time significantly and reduce inrush; omit C1 when maximum transient isolation is required at VOUT. This page synthesizes distributor availability, drop-in alternatives, and practical design notes (R1/C1 selection, hysteresis tuning, PGOOD wiring) not found in the manufacturer datasheet alone.
TPS2HB35CQPWPRQ1 - 36A Dual Smart High-Side Switch | TI
The Texas Instruments TPS2HB35CQPWPRQ1 is a dual-channel, 35-mΩ, 40-V automotive smart high-side switch in a 16-pin HTSSOP (PWP) PowerPAD package, qualified to AEC-Q100 Grade 1. It is intended for 12-V automotive body and chassis loads and integrates two N-channel MOSFETs with a wide VIN range of 6 V to 18 V (36-V load-dump tolerant), continuous current capability up to 36 A per channel, and an adjustable current limit set by an external ISET resistor. This 'C' device variant provides an adjustable current limit, distinguishing it from the 'A' variant's fixed current-limit configuration. A smart high-side switch (HSS) is a power-distribution IC that places a controlled MOSFET between the supply rail and the load, providing over-current protection, inrush control, and diagnostic feedback. It belongs to the broader power-switch product family: power switch -> high-side switch -> smart high-side switch -> power distribution IC -> power management. Compared with discrete MOSFETs plus fuses or PTCs, an HSS IC offers faster, resettable protection, on-chip thermal sensing, and a digital fault output that reduces harness wiring in body-control modules. Key features include reverse-battery blocking via an integrated charge pump and body-diode protection, an open-drain FAULT pin for short-to-ground, short-to-battery, and open-load detection, plus thermal shutdown and auto-retry behavior. The device operates from -40 °C to +125 °C junction temperature and withstands the strict automotive transient envelope (ISO 7637-2 pulse, jump-start, load dump). Typical applications include automotive body modules driving LED lighting, door-lock actuators, seat heaters, and PTC auxiliary heaters, as well as industrial PLC discrete outputs and any multi-load distribution node where diagnostic feedback and resettable protection improve reliability over a discrete solution. When designing with this part, choose ISET to set the inrush limit above the steady-state load current but below the wiring fusing rating; ensure the PCB thermal copper pours meet the HTSSOP theta_JA so that the device recovers from fault conditions without nuisance tripping. This page synthesizes distributor pricing, same-family drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
TPS2HC08-Q1 - 9.5mΩ Dual Smart High-Side Switch | TI
The Texas Instruments TPS2HC08-Q1 is a dual-channel automotive smart high-side switch integrating two NMOS power FETs with a charge pump, designed for 12V automotive battery systems. It delivers up to 7.5A DC when both channels are enabled, or 10A DC when only one channel is enabled, with a low on-resistance of 9.5mΩ that minimizes device power dissipation. A smart high-side switch is a power management IC that connects a load to the positive supply rail while integrating protection and diagnostic functions such as current limiting, thermal shutdown, and open-load detection. It replaces discrete MOSFET-plus-driver circuits, simplifying design and improving reliability. In the power management hierarchy, it sits above basic load switches, adding the robust protection and fault reporting demanded by automotive loads. Key features include an operating supply range suited to 12V battery systems during cranking and transient events, an integrated charge pump that ensures low RDS(on) without external components, and low standby quiescent current for battery-connected modules. Protection covers output short circuit, overcurrent, and overtemperature conditions, supporting functional-safety-oriented designs. Architecturally, the TPS2HC08-Q1 combines two NMOS power stages with gate-drive charge pump and protection logic in a compact 11-pin VQFN-HR (2.2x3.6mm) package. The device is AEC-Q100 qualified. Serial diagnostic reporting enables real-time load monitoring with automotive MCUs such as the TI TMS320F280015x or MSPM0 families. Typical applications include automotive body control modules, LED lighting drivers, and actuator drives such as relays, solenoids, and motors, where integrated diagnostics detect wire faults and load failures. For reliable operation, provide adequate PCB copper area under the package at high currents, place decoupling capacitors close to the supply pins, and follow the datasheet layout guidance to minimize parasitic inductance during short-circuit events.
TPS3106K33DBVR - 3.3V Ultra-Low Iq Voltage Supervisor | TI
The Texas Instruments TPS3106K33DBVR is an ultra-low supply current, supply voltage supervisory circuit designed for circuit initialization and timing supervision in DSP and processor-based systems. Packaged in a 6-pin SOT-23 (DBV), it monitors 3.3V power rails with an active-low, open-drain RESET output, a fixed 2.941V threshold, and a 130 ms reset delay time, with a typical quiescent current of approximately 1.1 µA across the 0.9 V to 3.6 V operating range. A voltage supervisor (also called a supply voltage monitor or reset IC) is a type of power management IC that holds a host processor in reset whenever the supply voltage is below a defined minimum or below a threshold for longer than the configured delay. Voltage supervisors sit between a power rail and a digital controller, generating an asserted-low reset signal during power-up, power-down, and brownout events to prevent code execution from corrupted memory or undefined logic states; in the broader hierarchy they are members of the supervisor / reset IC family inside the power management category. Key features include a 1.1 µA typical quiescent current, an open-drain RESET output suitable for wired-OR multi-rail monitoring, an internal 130 ms reset delay timer to provide brownout immunity, and a manual reset (MR) input that can force RESET low regardless of the sensed voltage. The TPS3106 family also includes the TPS3103 (active-low open-drain) and TPS3110 (active-low push-pull) variants for architectural flexibility. The wide hysteresis and tight threshold accuracy reduce nuisance resets in battery-powered designs. The TPS3106 uses a precision bandgap reference combined with a comparator and an integrated timing network to deliver reliable voltage monitoring. The device operates from supplies as low as 0.9 V, making it suitable for single-cell battery and energy-harvesting rails. Its open-drain RESET topology allows multiple supervisors to be combined into a single interrupt, useful in multi-rail systems where any one rail's failure should hold the host in reset. Typical applications include microcontroller and DSP reset supervision in portable electronics, battery-powered IoT sensors, industrial PLC and factory automation controllers, FPGA configuration rail monitoring, automotive infotainment sub-system monitoring (non-safety-rated), and energy-harvesting energy management modules. The part is well suited for any compact 3.3 V (or lower) digital system requiring robust power-on-reset and brownout supervision. When designing with this device, ensure the pull-up resistor on the open-drain RESET pin is sized appropriately for the load capacitance to meet the desired reset rise-time. The MR pin can be tied to VDD or left floating if unused, but should not be left floating in noisy environments where it could couple transient noise into the reset comparator. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
TPS3430WDRCR - Window Watchdog Timer, 3x3 VSON | Texas Instruments
The Texas Instruments TPS3430WDRCR is a standalone window watchdog timer with a programmable watchdog window and programmable watchdog reset delay, supplied in a 3.00 mm × 3.00 mm, 10-pin VSON package. The device is intended to monitor processor or controller activity and assert a reset-related output when expected service falls outside a configured time window. The verified listing identifies the part as a watchdog circuit IC in a 10-VSON package, while the manufacturer describes a window watchdog with factory-programmed default delay options or an external reset-delay capacitor. A window watchdog timer is a system-protection IC within the processor-supervisor and embedded-control ecosystem. Unlike a simple timeout timer, a window watchdog checks both how quickly service arrives and whether service arrives too early. This dual-window behavior helps detect a processor that has stopped responding, is executing too slowly, or is repeatedly restarting. The TPS3430 family is therefore useful in embedded systems, industrial controllers, communications equipment, and other designs where a stuck firmware loop could damage system behavior. Verified manufacturer information highlights programmable watchdog-window behavior, programmable watchdog reset delay, and 2.5% typical timing accuracy at 25°C. The reset delay can use factory-programmed default settings or an external capacitor. The watchdog can also be disabled through the SET pins to prevent unwanted timeouts during development or power-on. These features support flexible reset policies while keeping the external circuit compact. The TPS3430WDRCR operates as a monitoring and fault-detection device rather than as the primary power regulator. Its watchdog function depends on the monitored system periodically generating the expected service signal or edge. System designers must select the watchdog timing, reset polarity, and external capacitor values so normal operation remains inside the allowed window while a genuine failure produces a deterministic recovery action. The exact threshold voltage, supply-current limits, pin functions, and full timing ranges are not included in the supplied verified excerpts and are marked as data needed below. Typical uses include monitoring an embedded controller, protecting an industrial control module during firmware execution, supervising a communications processor, and supervising a sensor or actuator controller. It can also support development boards where a recoverable watchdog fault is preferable to a complete power-cycle. The manufacturer lists the TPS3430 in a small 3.00 mm × 3.00 mm 10-pin VSON package, making it suitable for compact PCB layouts when the exposed-pad and thermal requirements are handled correctly. For PCB implementation, place the device close to the monitored controller and route the watchdog input away from noisy switching nodes. Use a stable, decoupled supply and follow the manufacturer’s capacitor recommendations. Because the reset delay may be programmed with an external capacitor, verify capacitor tolerance and leakage requirements against the timing budget. The SET pins should be controlled deliberately during initialization so normal startup does not generate an unintended reset event. This product page combines the verified Texas Instruments product description, distributor package identification, and practical engineering guidance. It also distinguishes the available verified facts from parameters that require confirmation in the complete manufacturer datasheet. Engineers should use the exact pinout and electrical limits from the datasheet before releasing a production design or approving a second-source replacement.
TPS3431SDRBR - Programmable Window Watchdog Timer | TI
The Texas Instruments TPS3431SDRBR is a programmable window watchdog timer with enable control, high-precision timing, and a 3.00 mm × 3.00 mm, 8-pin VSON package. It is designed to monitor system operation and detect stalled or out-of-window execution by periodically refreshing the monitored processor. A watchdog timer is a supervisory power-management IC that requires an external refresh signal within a defined interval. If the refresh is missing or occurs outside the programmed window, the device asserts its reset output. The TPS3431 belongs to the watchdog-timer and system-reset hierarchy, helping protect embedded systems against firmware hangs, processor faults, and communication failures. The watchdog timeout can be programmed with an external capacitor or factory-programmed default delay settings. According to the verified product information, the timing accuracy is 15% across the -40 °C to +125 °C temperature range and typically 2.5% at 25 °C. The watchdog can also be disabled through the Enable pin or SET logic pins, which is useful during development, production testing, and controlled shutdown sequences. The TPS3431 is suitable for industrial controllers, embedded processors, automotive electronics, communications equipment, and consumer systems that require deterministic supervision. Its small package supports compact PCB layouts, while the programmable timing and enable functions provide design flexibility across different system architectures. The device is identified by distributors as an 8-SON, 3 x 3 mm watchdog circuit IC. Designers should verify the exact package dimensions, exposed-pad requirements, pin functions, timeout configuration, reset polarity, and capacitance value against the manufacturer datasheet before layout or production release. Because the provided web data does not include the complete electrical timing table or detailed pin mapping, those values are marked as needed rather than inferred. This page consolidates the verified manufacturer and distributor information, practical application guidance, datasheet links, and qualification questions for engineers evaluating TPS3431SDRBR. It is intended to support component selection and design review while preserving the distinction between verified specifications and information requiring confirmation from the full manufacturer datasheet.
TPS3431SQDRBRQ1 - Programmable Window Watchdog | TI
The Texas Instruments TPS3431SQDRBRQ1 is an automotive-standard programmable window watchdog timer with 15% watchdog-timeout accuracy, 2.5% typical accuracy at 25°C, and an operating temperature range of -40°C to +125°C. It is housed in an 8-pin VSON package measuring 3.00 mm × 3.00 mm and includes an enable feature for controlled operation during development and power-management sequences. A watchdog timer is a supervisory circuit that monitors a system heartbeat and generates a fault response when the monitored timing behavior becomes invalid. A window watchdog adds upper and lower timing boundaries, allowing it to detect both a missing or late heartbeat and an unexpectedly early heartbeat. Within the broader hierarchy, this device is a timer, a supervisory circuit, a power-management IC, and a semiconductor. The TPS3431SQDRBRQ1 supports two watchdog-timeout programming methods: an external capacitor or factory-programmed default delay settings. Its 15% timeout accuracy applies over the full -40°C to +125°C range, while its typical timing error is 2.5% at 25°C. The watchdog can be disabled through the enable pin or SET logic pins, helping prevent unwanted resets during firmware development, production testing, or controlled shutdown. The device also provides open-drain, active-low fault signaling, based on the distributor specification. Its 8-pin VSON body is only 3.00 mm × 3.00 mm, making it suitable for compact automotive and industrial control assemblies. TI identifies the package as having wettable flanks for easier optical inspection after soldering, improving assembly-process visibility without changing the package footprint. Typical applications include automotive electronic control units, battery-powered industrial controllers, motor-control modules, safety-monitoring subsystems, and embedded systems where a microcontroller or processor must service the watchdog within a defined timing window. The device is particularly appropriate when the design must distinguish an early or late heartbeat rather than relying only on a simple elapsed-time timeout. When laying out the circuit, place the watchdog capacitor and timing-related components close to their associated pins, provide a stable supply and ground path, and route the open-drain reset output with suitable pull-up arrangements. Designers should verify that the configured timing window accommodates worst-case clock tolerance, interrupt latency, task scheduling, and startup behavior across the complete -40°C to +125°C operating range. This product page consolidates verified manufacturer and distributor information, documented timing characteristics, package details, sourcing data, and design guidance. It also distinguishes the verified commercial TPS3431SDRBR alternative from unverified cross-brand options so engineers can make package- and qualification-aware decisions without relying on unsupported substitution claims.
TPS3610T50PW - Battery-Backup Supervisor, 5V, TSSOP-14 | Texas Instruments
The Texas Instruments TPS3610T50PW is a battery-backup supervisory circuit for RAM retention that integrates processor activity monitoring, backup-battery switchover, and write-protection in a 14-pin TSSOP (PW) package. It operates over a typical supply voltage of 5V with a maximum quiescent supply current of 40 µA and a maximum battery supply current of 100 nA, making it suitable for low-power always-on designs. A battery-backup supervisor is a specialized power-management IC that watches the main supply rail and, when VCC collapses below a programmable threshold, switches the load over to a backup battery so that CMOS SRAM can retain its contents during power loss. Within the broader power-management hierarchy, supervisors sit alongside voltage regulators, reset ICs, and watchdog timers as system-reliability building blocks; they are essentially a combination of a precision voltage monitor and a power-path switch, often augmented with chip-enable gating for memory write protection. Key features include a precision supply-voltage monitor with power-fail comparator, low-line indication for early warning of impending brown-out, watchdog timer for processor activity, battery-status (BATT OK) indicator, manual switchover input, and chip-enable (CE) gating to block spurious writes to external SRAM during the VCC-to-battery transition. The push-pull/totem-pole outputs drive CMOS logic directly without external pull-ups, simplifying board routing. Internally, the TPS3610 uses a precision bandgap reference and on-chip comparators to track VCC against the user-programmed threshold; once VCC falls below threshold the device asserts RESET, gates CE, and closes the internal MOSFET that routes VBAT to the SRAM VDD rail. Typical quiescent current of 40 µA from VCC and 100 nA from VBAT means a CR2032-style backup cell can sustain SRAM for years. Typical applications include battery-backed SRAM modules in industrial controllers, point-of-sale terminals, data loggers, medical instruments with non-volatile parameter storage, automotive telematics units, and any embedded system that must preserve settings through a power cycle. A 5V main rail with a 3V or 3.6V lithium coin cell is the standard configuration. When designing with the TPS3610T50PW, place the decoupling capacitors on VCC and VBAT as close to the IC as possible and keep the trace from VBAT to the SRAM VDD short to minimize inrush during switchover. Choose a threshold capacitor on the TOL pin to set the power-fail warning window consistent with your DC-DC converter's hold-up time. This page synthesizes distributor pricing, verified drop-in alternatives, and practical supervisor-design guidance not consolidated in the manufacturer datasheet.
TPS3700DDCR - 18V Window Voltage Detector | Texas Instruments
The Texas Instruments TPS3700DDCR is a high-voltage (18-V) window voltage detector for overvoltage and undervoltage monitoring in a 6-pin SOT-23-THIN (DDC) package with a -40C to +125C operating range. It integrates two high-accuracy comparators sharing an internal 400 mV reference, two open-drain outputs rated to 18 V, and operates across a wide 1.8 V to 18 V supply range. Threshold accuracy is 1.0% over temperature (0.25% typical), and quiescent current is 5.5 uA typical. A window comparator (also called a window voltage detector or dual-voltage supervisor) is a power-management IC that asserts a fault output whenever a monitored rail falls outside a user-defined upper-and-lower voltage window. It belongs to the broader hierarchy supervisor IC -> voltage monitor -> power management IC -> semiconductor. Window comparators are essential where both undervoltage (UV) and overvoltage (OV) events can damage downstream loads, and they replace two single-channel supervisors with one part and one reference, simplifying board layout and improving threshold tracking. The TPS3700 can be used as a true window detector or as two independent voltage monitors. The OVH and OVL pins drive two separate open-drain outputs that can be pulled up to any rail up to 18 V, enabling direct interface to microcontrollers, FPGAs, or downstream logic. The internal 400 mV reference enables very low threshold settings using external resistor dividers, and the wide 1.8 V to 18 V supply lets a single part supervise 3.3 V, 5 V, 12 V, and 15 V rails from the same device. The high threshold accuracy of 1.0% over temperature ensures reliable fault detection in production systems without false triggering. Typical applications include industrial 24V/12V rail monitoring (with the detector powered from a separate low-voltage rail), automotive battery and ECU voltage supervision, FPGA/MCU core and I/O rail sequencing, and USB Type-C VBUS monitoring. The 6-pin SOT-23-THIN (DDC) package makes the part suitable for compact PCB designs where board area is at a premium. When designing with the TPS3700DDCR, select external resistor dividers so the trip points fall within the 400 mV to (Vsupply - 400 mV) common-mode range of the inputs. Pull-up resistors on the open-drain outputs must be sized for the desired response time versus quiescent leakage, and supply decoupling with a 0.1 uF ceramic capacitor close to VDD is recommended. This page synthesizes distributor pricing, drop-in alternatives in the same DDC footprint, and practical design guidance not found in the manufacturer datasheet.
TPS3700DSER - 18V Window Voltage Detector | Texas Instruments
The Texas Instruments TPS3700DSER is an 18 V high-voltage window voltage detector with an internal 400 mV reference and two open-drain outputs for overvoltage and undervoltage monitoring. It operates across a 1.8 V to 18 V monitored-supply range, with two high-accuracy comparators that can be configured as a voltage-window detector or as independent voltage monitors. The device is packaged in a 6-pin WSON DSE package measuring 1.5 mm by 1.5 mm, and its specified operating temperature range is -40°C to +125°C. A window voltage detector is a power-management monitoring IC that evaluates whether a supply voltage remains between programmable upper and lower limits. The TPS3700 uses external resistors to set the monitored thresholds while retaining a common internal reference for the comparator circuitry. Its two open-drain outputs can be pulled up to 18 V, allowing flexible connection to system logic, reset inputs, or fault-management circuits. Because open-drain outputs do not actively drive a voltage high, each output requires an appropriate pull-up arrangement. The main features of the TPS3700 are its wide 1.8 V to 18 V operating range, high-voltage output capability, internal 400 mV reference, dual comparator architecture, and independent open-drain indication for overvoltage and undervoltage conditions. These characteristics suit systems that need compact, deterministic supply-range supervision rather than a general-purpose precision analog signal chain. The monitored voltage can also be configured using external components, allowing the same device family to address different rail thresholds. The TPS3700 is designed as a low-power system supervisor for power supplies, battery-backed systems, industrial control equipment, communication infrastructure, and embedded electronics. Its small package helps reduce board area, while the wide input range supports monitoring above common low-voltage rails. The operating-temperature specification permits use across industrial temperature environments when the surrounding system provides appropriate electrical and thermal conditions. When placing the device in a design, connect the monitored voltage and external threshold-setting network according to the manufacturer datasheet, and provide suitable pull-up resistors on both open-drain outputs. Pay particular attention to trace resistance, resistor tolerance, input-noise conditions, and the logic levels connected to the outputs. Do not infer alternate-package compatibility from a similar function; the 6-WSON DSE footprint and pin configuration must be verified before substitution. This product page combines the verified Texas Instruments device description, distributor references, and practical design guidance for engineers evaluating TPS3700DSER. It distinguishes explicit catalog facts from parameters that require confirmation in the full datasheet, helping procurement and hardware teams assess the part without relying on unverified assumptions.
TPS3700QDDCRQ1 - 18V Automotive Window Comparator | Texas Instruments
Texas Instruments TPS3700QDDCRQ1 is an automotive high-voltage window voltage detector with two high-accuracy comparators, a 400 mV internal reference, and separate open-drain overvoltage and undervoltage outputs. It operates from 1.8 V to 18 V and is housed in a 6-pin SOT-23-THIN (DDC) package, with an operating temperature range of -40°C to +125°C. The device is designed for automotive voltage monitoring, regulator enable control, and power-sequence supervision. An automotive window comparator is a type of voltage monitor that checks whether a supply voltage remains between an adjustable lower threshold and an adjustable upper threshold. The TPS3700-Q1 family combines two comparators with an internal reference, allowing the monitored voltage to be set by external resistors. It can therefore operate as a combined window detector or as two independent voltage monitors, depending on the external resistor and output configuration. Key features include a wide 1.8 V to 18 V supply range, adjustable thresholds down to 400 mV, low quiescent current, high threshold accuracy, and two open-drain outputs rated to 18 V. The independent undervoltage and overvoltage outputs provide flexibility for system reset, regulator shutdown, load disconnect, or fault signaling. The automotive qualification of the Q1 suffix makes the device suitable for harsh operating environments when the surrounding automotive qualification requirements are met. Internally, the device uses two high-accuracy comparators referenced to a common 400 mV internal reference. External resistor networks scale the monitored voltage down to the comparator input range, while the threshold accuracy is maintained over the specified supply and temperature conditions. The open-drain outputs require pull-up resistors and can be wired independently or combined through appropriate logic to create a single fault indication. Typical applications include automotive battery and rail monitoring, low-voltage reset signaling for body-control modules, regulator enable sequencing, infotainment supply supervision, and protection of external circuitry from overvoltage or undervoltage conditions. The 18 V capability is useful when monitoring automotive electrical systems, although the monitored supply and pull-up networks must remain within their specified limits. Designers should verify the external resistor values, threshold tolerance, pull-up voltage, output logic polarity, and maximum monitored voltage against the manufacturer datasheet. The open-drain outputs should not be used without suitable pull-up resistors. Because the Q1 device is intended for automotive systems, PCB layout should minimize noise coupling around the high-impedance comparator inputs and provide adequate copper for the small SOT-23-THIN package. This product page combines verified manufacturer and distributor information, practical application guidance, package information, and a comparison framework for engineers evaluating window comparators. It distinguishes documented electrical facts from parameters that still require design-specific verification, helping procurement and hardware teams identify the correct device without relying on unsupported cross-reference claims.
TPS3700QDSERQ1 - 18V Automotive Window Comparator | TI
Texas Instruments TPS3700QDSERQ1 is an automotive high-voltage window voltage detector with two high-accuracy comparators, a 400 mV internal reference, and two open-drain outputs rated to 18 V. It monitors an adjustable input voltage for overvoltage and undervoltage conditions in a 6-pin WSON (DSE) package specified for -40°C to +125°C operation. The device can operate as a window comparator or as two independent voltage monitors, with threshold selection performed through external resistors. A window voltage detector is a comparator-based power management IC that compares a monitored voltage against programmed upper and lower limits. It belongs to the hierarchy of voltage supervisors, reset controllers, comparators, and power management semiconductors. Unlike a simple undervoltage detector, a window detector identifies both excessive and insufficient voltage conditions, making it useful when a protected system must remain operational only within a defined supply range. The TPS3700-Q1 uses two comparators referenced to a common 400 mV internal source. External resistor networks scale the monitored voltage to the comparator inputs, allowing the designer to establish overvoltage and undervoltage thresholds. Its two open-drain outputs can be pulled up to 18 V, making the interface suitable for automotive electrical environments where fault signaling must remain compatible with higher-voltage logic or system rails. The monitored signal may also be divided so that both comparators operate against the same internal reference. This architecture supports window supervision or independent upper- and lower-threshold monitoring. Because the outputs are open-drain, their final voltage is determined by the pull-up network rather than the device itself. Suitable pull-up values and logic levels must therefore be selected against the automotive system architecture and system-level requirements. Typical uses include monitoring an 18 V automotive supply, detecting excursions above and below an acceptable operating range, supervising a downstream power-conversion stage, and generating fault signals for a vehicle controller. The -40°C to +125°C temperature range makes the device appropriate for applications exposed to automotive temperature extremes when its qualification and operating requirements are satisfied for the specific design. Designers should confirm the exact comparator polarity, delay, hysteresis, supply requirements, and pin behavior against the manufacturer datasheet before release. External resistors also determine threshold accuracy and sensitivity to resistor tolerance, leakage, and noise. Open-drain traces should be routed away from noisy power stages, and pull-ups should be placed close to the output pins to limit susceptibility to board-level coupling. This page consolidates verified manufacturer and distributor information, package details, pricing references, and engineering-oriented selection guidance. It also distinguishes genuine same-footprint alternatives from cross-package parts, helping engineers identify replacement options without assuming that similar voltage-detector functions guarantee PCB compatibility.
TPS3710QDSERQ1 - 18V Wide-VIN Automotive Voltage Detector | TI
The Texas Instruments TPS3710QDSERQ1 is an automotive wide-VIN voltage detector with an adjustable monitoring threshold, open-drain active-low output, and built-in hysteresis. It operates from 1.8V to 18V, monitors one voltage supply through the SENSE input, and is specified over a junction-temperature range of -40°C to +125°C. The device is supplied in a compact 6-pin WSON package measuring 1.5 mm by 1.5 mm. Its primary function is to assert a fault indication when the monitored voltage falls below the programmed threshold. A voltage detector, also called a voltage supervisor or undervoltage monitor, belongs to the power-management IC hierarchy: voltage detector -> voltage supervisor -> power-management IC -> semiconductor. It is used in systems where an undervoltage condition can cause unreliable processor, memory, analog, or communication behavior. Unlike a general-purpose comparator, the TPS3710-Q1 family includes an automotive qualification level, separate supply and sense connections, and hysteresis intended to reject brief input glitches. The TPS3710QDSERQ1 supports a wide 1.8V-to-18V operating range and includes a typical monitored threshold of 0.4V. The OUT signal is driven low when the voltage at SENSE drops below the negative-going trip threshold and returns high when the sensed voltage rises above the corresponding positive-going threshold. The output is open-drain, allowing the system designer to select the pull-up voltage and use wired-AND fault signaling. The automatic -40°C to +125°C junction-temperature specification makes the device suitable for harsh automotive environments. The detector uses separate VDD and SENSE pins so the monitored voltage can be evaluated independently from the device supply. Its built-in hysteresis creates a defined separation between the falling and rising thresholds, reducing false output transitions when the monitored rail contains short disturbances. This feature is important in vehicle electrical systems, where load dumps, cold starts, and switching transients can produce short rail disturbances. The open-drain architecture also supports low-current design because the output can remain unasserted without continuously sourcing current. Typical uses include automotive battery and 12V rail undervoltage detection, ECU power sequencing, body-control monitoring, infotainment supply supervision, and industrial or communications systems that require a compact, wide-input-range detector. In an automotive design, the monitored voltage may be connected to a vehicle rail while VDD is supplied from a regulated logic rail. The OUT pin can drive an external pull-up and feed a microcontroller or safety logic input. The principal design consideration is to select the sensing resistor and feedback values so that the intended rail maps to the correct trip threshold without exceeding the device’s electrical limits. Place the SENSE connection away from high-current return paths to minimize ground bounce, and use the open-drain output with a pull-up voltage compatible with the receiving logic. The WSON package also requires a suitable exposed-pad thermal and PCB layout strategy. This product page combines the verified manufacturer, distributor, and automotive ordering information with practical guidance on hysteresis, open-drain fault signaling, WSON layout, and the limited set of verified same-package alternatives. It is intended to help engineers evaluate whether the TPS3710QDSERQ1 matches the voltage range, fault-response polarity, temperature grade, package, and qualification requirements of a specific design.
TPS3711 - 36V Voltage Detector, 400mV Ref | Texas Instruments
The Texas Instruments TPS3711 is a precision voltage detector that combines a comparator and an internal 400 mV reference for undervoltage detection. It operates over a wide supply voltage range of 1.8 V to 36 V, making it suitable for a variety of industrial and automotive applications. The device features a high-accuracy threshold voltage of 400 mV with 0.75% accuracy over temperature and built-in hysteresis for noise rejection, ensuring stable output operation without false triggering. The TPS3711 is available in a SOT-23-6 (SOT-6, SOT-23-THIN) package and is specified from -40C to +125C junction temperature. A voltage detector, also called a voltage supervisor or reset IC, monitors a supply voltage and asserts a signal when the monitored rail falls below a preset threshold. It belongs to the supervisory circuit family within power management ICs, a sub-category of semiconductor voltage regulators and system-protection devices. Voltage detectors are essential in processor-based systems, where they hold the MCU in reset until the rail is stable, preventing erratic operation during power-up and brown-out events. Key features include an open-drain output rated to 25 V for flexible level translation to any logic rail, a built-in hysteresis window that provides noise immunity, and low quiescent current that suits battery-powered designs. The wide supply range of 1.8 V to 36 V allows the TPS3711 to monitor 3.3 V, 5 V, 12 V, 24 V, and 36 V industrial rails directly. Technically, the device uses a precision bandgap reference and comparator. The monitored voltage is set with an external resistor divider on the SENSE pin, giving a fully adjustable trip point. OUT is driven low when SENSE drops below the negative threshold and goes high when the voltage recovers. The open-drain output requires an external pull-up resistor. Typical applications include undervoltage detection in industrial control systems, 12 V/24 V/36 V rail monitoring in automotive and telecom equipment, and portable device battery supervision. When designing with the TPS3711, size the resistor divider for the desired threshold, account for hysteresis to avoid chatter, and decouple the SENSE pin with a small capacitor to reject fast transients.
TPS3711DDCR - 36V Wide-Supply Voltage Detector | Texas Instruments
The Texas Instruments TPS3711DDCR is a wide-supply voltage comparator that operates over a 1.8 V to 36 V range in a 6-pin SOT-23-THIN (DDC) package. The device features a precision comparator with an internal 400 mV reference and an open-drain output rated to 25 V for undervoltage detection. The monitored voltage is set with external resistors, allowing flexibility for any threshold between 400 mV and 6 V. What is a voltage supervisor (also called a voltage detector or reset IC)? A voltage supervisor is a power-management IC that continuously monitors a supply rail and asserts a reset or fault signal when the rail falls outside a programmed window. Supervisors sit hierarchically under power management ICs, alongside LDOs, DC-DC converters, and battery monitors. They are essential building blocks in microcontrollers, SoCs, and FPGA-based systems, where brown-outs or power-rail glitches can cause latch-up, memory corruption, or undefined logic states. Key features include a wide 1.8 V to 36 V operating range, internal 400 mV ±1.5% reference, open-drain output capable of pulling to 25 V, low quiescent current in the microamp range, and a small SOT-23-6 footprint. The TPS3711 uses OUT driven low when the voltage at the SENSE pin drops below the negative threshold and returns high when SENSE recovers, giving designers a clean logic-level reset signal with a known pull-up reference. The TPS3711DDCR uses a precision analog comparator with an internal bandgap-derived 400 mV reference. The open-drain output stage allows the reset signal to be pulled up to any voltage up to 25 V, independent of the device supply, which is essential for interfacing low-voltage MCUs to higher-voltage rails. The SOT-23-THIN package provides a compact footprint while maintaining industrial -40°C to +125°C operating range. Typical applications include industrial PLCs and process controllers, automotive body and infotainment modules, battery management systems, microcontroller brown-out detection, and overvoltage/undervoltage protection in 12 V and 24 V industrial buses. The wide supply range is particularly valuable for 24 V industrial systems where traditional 5 V-only supervisors cannot operate directly from the bus. When designing with the TPS3711, select the external resistor divider so that the sensed voltage equals 400 mV at the desired threshold. A 100 kΩ to 1 MΩ total resistance keeps quiescent current low without making the SENSE pin noise-sensitive. Always pull OUT up to a valid logic rail through a resistor; do not leave it floating. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
TPS3801L30DCKRG4 - 2.64V Voltage Supervisor SC-70-5 | TI
The Texas Instruments TPS3801L30DCKRG4 is an ultra-small supply voltage supervisor IC that monitors a single 2.64V rail, packaged in a 5-pin SC-70 (SOT-323, TI package code DCK) with an active-low, push-pull RESET output. It belongs to the TPS380x family of microprocessor supervisory circuits and offers a fixed threshold of 2.64V with 200 ms typical reset delay. The 'L30' suffix denotes the specific 2.64V threshold variant within the family. The 'G4' suffix indicates a Pb-free, RoHS-compliant, green-grade reel packaging option from TI. A voltage supervisor (also called a reset IC or power-on reset supervisor) is a power-management device that holds a host processor in reset until the supply rail is stable and within tolerance. Voltage supervisors sit in the hierarchy below LDOs and DC-DC converters, ensuring that downstream processors do not execute code or access peripherals at indeterminate logic levels during power-up, brown-out, or transient dropout events. The TPS3801L30DCKRG4's push-pull active-low RESET output makes it directly compatible with CMOS logic inputs on most DSPs and microcontrollers without needing an external pull-up resistor. Key features include an ultra-low supply current of 9 µA typical, ensuring negligible load on the monitored rail. The reset output remains asserted as long as VDD is below the threshold and continues for 200 ms after VDD rises above the threshold, satisfying the reset timing requirements of most DSP and MCU families. The SC-70-5 package measures roughly 2.0 mm x 1.25 mm, making it among the smallest supervisors available. The device operates across an industrial temperature range of -40C to +85C and is qualified to TI's standard JEDEC reliability flow. Internally, the TPS3801L30DCKRG4 uses a precision bandgap reference and comparator topology. A voltage divider and reference comparator generate the reset signal, while an internal timer block produces the 200 ms delay using an on-chip oscillator. The push-pull output stage actively drives both high and low, eliminating external pull-up components and reducing BOM count. Typical applications include DSP/FPGA power supervision in portable and battery-powered equipment, microcontroller reset generation in industrial sensors, single-rail monitoring in handheld medical devices, and brown-out protection in IoT endpoints. The SC-70-5 footprint makes it well-suited for space-constrained designs. When designing with this device, place it as close as possible to the IC it monitors, and route VDD through a short, wide trace to minimize voltage drop during high-current transients. Ensure the monitored rail's nominal value stays well above the 2.64V threshold with adequate margin under worst-case load. This page synthesizes distributor pricing, SC-70-5 drop-in alternatives within the TPS380x family, and practical design notes not found in the manufacturer datasheet alone.
TPS3808G01QDBVRQ1 - Auto Voltage Supervisor, 0.4V-5V SENSE | TI
The Texas Instruments TPS3808G01QDBVRQ1 is an AEC-Q100 qualified microprocessor supervisory circuit that monitors system voltages from 0.4 V to 5 V and asserts an open-drain RESET signal when the SENSE voltage drops below a preset threshold or when the manual reset (MR) pin is driven low, all housed in a 6-pin SOT-23 (DBV) package. It features an adjustable reset threshold, a programmable reset delay from 1.25 ms to 10 s using an external capacitor, and a very low typical quiescent current of 2.4 mA, making it well suited for automotive and industrial always-on monitoring rails where standby power budget is critical. A voltage supervisor IC (also called a reset supervisor or voltage monitor) is a power management integrated circuit that observes a system rail and generates a clean reset signal to a microcontroller, SoC, or FPGA whenever that rail falls outside its valid operating window. Voltage supervisors sit hierarchically above DC-DC converters and LDOs in the power tree: DC-DC converters and LDOs regulate the rail, while supervisors verify the rail is healthy and force the processor into a known-good reset state on faults such as brown-out, power-up glitch, or slow ramp. They are fundamental building blocks for functional-safety designs (ISO 26262, IEC 61508) and any application that must boot deterministically. The TPS3808G01QDBVRQ1 combines high threshold accuracy across the full -40 C to +125 C automotive Grade-1 range, an active-low RESET output with open-drain topology that allows wired-OR connection of multiple supervisors, a manual-reset input for operator or host push-button reset, and a programmable delay capacitor pin (CT) that decouples the watchdog timing from the supply ripple. Compared with simple internal MCU brown-out detectors, this part provides a tighter threshold tolerance and a cleaner, externally programmable reset pulse width that is independent of firmware code paths. Typical applications include automotive ECU power-good monitoring, ADAS sensor rail supervision, body and chassis controller reset management, industrial PLC watchdog, and battery-powered IoT node supply monitoring. The wide SENSE input range also enables direct supervision of low-voltage rails (down to 0.4 V) used by modern processors without auxiliary dividers in many cases. When designing with this device, place the CT delay capacitor close to the CT pin and use a 1.5 nF X7R ceramic for an approximate 100 ms reset delay per capacitor value guidelines. Ensure the pull-up resistor on open-drain RESET is sized to the downstream logic level and routed away from noisy switching nodes to avoid false resets during load transients. This page aggregates distributor stock, drop-in SOT-23-6 alternatives, and practical design considerations that complement the TI datasheet and help engineers shorten the BOM selection and qualification cycle for automotive supervisory circuits.
TPS3808G01QDRVRQ1 - Auto-Q1 0.4-5V Adj Supervisor | Texas Instruments
The Texas Instruments TPS3808G01QDRVRQ1 is an AEC-Q100-qualified, low-quiescent-current microprocessor supervisory circuit that monitors system voltages from 0.4 V to 5 V in a 6-pin WSON (DRV, 2x2 mm) package. It asserts an open-drain RESET signal when the SENSE voltage drops below a preset threshold or when the manual reset (MR) pin is driven low, and holds RESET low for a user-adjustable delay time after both SENSE and MR return above their thresholds. A voltage supervisor (also called a reset IC or voltage monitor) is a dedicated power-management device that observes one or more system rails and generates a clean reset signal to a microcontroller, FPGA, ASIC, or processor whenever the rail sags, droops, or falls out of specification. Voltage supervisors sit below DC-DC converters and LDOs in the power-tree hierarchy and above the digital logic that depends on valid supply rails. By separating the monitoring function from the regulator, designers can guarantee deterministic boot and brown-out behavior independent of converter load transients. Key features include an adjustable SENSE threshold down to 0.405 V with high threshold accuracy, a programmable reset delay from 1.25 ms to 10 s via an external capacitor on the CT pin, very low quiescent current of 2.4 uA typical, and an open-drain active-low RESET output that supports wired-OR with other supervisors. The device operates from a 1.7 V to 6.5 V VDD supply and tolerates SENSE voltages up to 6.5 V independent of VDD, simplifying dual-rail monitoring. The TPS3808G01QDRVRQ1 is the automotive-grade (-Q1) version of the TPS3808G01DRVR and adds AEC-Q100 qualification, extended temperature support, and PPAP documentation for safety-critical automotive designs. Internally, a precision bandgap reference, comparator, and delay-timing block combine to give a glitch-immune, monotonic RESET behavior even during fast load steps. Typical applications include automotive ECU power-rail monitoring, ADAS sensor supplies, body and chassis modules, industrial PLC supervisory circuits, battery-powered IoT sensor nodes, and FPGA/MCU brown-out protection. The combination of 2.4 uA IQ and a tiny 2x2 mm WSON footprint makes it ideal where board area and standby drain are at a premium. Designers should place the CT capacitor close to the CT pin and use a 0.1 uF VDD bypass capacitor within 1 mm of the device. Compared with the non-automotive TPS3808G01DRVR, the Q1 variant is the drop-in choice when an AEC-Q100 release is required.