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Texas Instruments TPS3124J12DBVT — Power Management (PMIC / Gate Driver)

TPS3124J12DBVT TI Simple Reset/Power-On Reset

MPNTPS3124J12DBVT
Active

Texas Instruments TPS3124J12DBVT, Simple Reset/Power-On Reset, 1-Channel, 1.08V Threshold, Push-Pull Output, Active High/Active Low, SOT-23-5, -40°C to 85°C

$3.0500Ref. price · indicative, final on quote
Texas Instruments TPS3124J12DBVT datasheet (PDF)
PackagingSC-74A, SOT-753
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

TPS3124J12DBVT specifications
ParameterValue
TypeSimple Reset/Power-On Reset
MountingSurface Mount
Voltage - threshold1.08V
Number of voltages monitored1
Operating temperature-40°C~85°C(TA)
ResetActive High/Active Low
OutputPush-Pull, Totem Pole
PackageTape & Reel (TR); Cut Tape (CT)
Reset timeout100ms Minimum
CaseSC-74A, SOT-753

Product details

Why a 1.08V threshold matters for today's core rails

The TPS3124J12DBVT is a Texas Instruments Simple Reset/Power-On Reset supervisor that monitors a single voltage rail with a 1.08V threshold. That threshold targets low-voltage core supplies—1.0V to 1.2V—common in modern processors, FPGAs, and SoCs. If the rail dips below 1.08V, the reset output asserts and holds for a minimum 100ms timeout, giving the supply time to stabilize before the system restarts. The output is push-pull, totem-pole, configurable as either Active High or Active Low. This flexibility means it can directly drive a reset input without an external pull-up resistor, saving a component on the BOM.

The device is ROHS3 compliant, simplifying compliance with current environmental regulations.

Active production status and sourcing posture

Production continues, which means no urgency to stockpile or qualify a second source. The base product number is TPS3124. Multiple threshold and package variants exist under that family, but this specific J12 suffix locks the 1.08V threshold and the SOT-23-5 package.

Frequently asked questions

Is TPS3124J12DBVT active high or active low reset?

The TPS3124J12DBVT supports both Active High and Active Low reset outputs. The output is push-pull, so the polarity is determined by which pin you connect—no external pull-up needed.

When sourcing TPS3124J12DBVT, what is the closest functional second-source?

A close functional alternative is the TLV803EA29VDBZR from TI, which offers a similar Simple Reset/Power-On Reset function but with an Active Low, Open Drain output and a 130ms minimum reset timeout. The TLV803ED29DBZR variant has a 33ms minimum timeout. Neither is a pin-for-pin replacement—the output type and timeout differ—but both can serve as a second-source for the supervisory function if the system can accommodate the open-drain output and different timeout.