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Texas Instruments TPS3851G25EDRBR — Power Management (PMIC / Gate Driver)

TI TPS3851G25EDRBR Simple Reset/Power-On Reset

MPNTPS3851G25EDRBR
Active

Texas Instruments TPS3851G25EDRBR, Simple Reset/Power-On Reset, Active Low, Open Drain/Open Collector Output, 2.5V Threshold, 170ms Minimum Reset Timeout, -40°C~125°C, 8-VDFN Exposed Pad, Surface Mount

$0.9345Ref. price · indicative, final on quote
Texas Instruments TPS3851G25EDRBR datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

TPS3851G25EDRBR specifications
ParameterValue
TypeSimple Reset/Power-On Reset
MountingSurface Mount
Voltage - threshold2.5V
Number of voltages monitored1
Operating temperature-40°C~125°C(TJ)
ResetActive Low
OutputOpen Drain or Open Collector
PackageTape & Reel (TR); Cut Tape (CT)
Reset timeout170ms Minimum
Case8-VDFN Exposed Pad

Product details

2.5V rail supervisor for industrial and automotive environments

The open-drain output can be wire-ORed with other reset outputs, making it straightforward to combine multiple supply-rail supervisors into a single reset signal for the system controller.

170ms timeout — why the minimum matters for boot reliability

The reset timeout is specified as 170ms minimum, meaning the output stays low for at least 170ms after the supply crosses the threshold on the way up. That minimum guarantees the 2.5V rail has fully settled and the oscillator has started before the processor is released from reset — a common failure point when the timeout is too short for the bulk capacitance on the rail.

Frequently asked questions

Is TPS3851G25EDRBR active low or active high?

The reset output is active low — it pulls low when the monitored voltage falls below the 2.5V threshold and releases high after the 170ms timeout once the supply recovers.

Is TPS3851G25EDRBR compatible with 3.3V systems?

This part monitors a 2.5V rail specifically. For a 3.3V system, the sibling TPS3851G30 monitors a 3.0V threshold — the same package and pinout, only the threshold voltage changes.