Skip to main content
Log in
Texas Instruments TPS3840PL29DBVR — Power Management (PMIC / Gate Driver)

TPS3840PL29DBVR – TI Simple Reset/Power-On Reset

MPNTPS3840PL29DBVR
Active

Texas Instruments TPS3840PL29DBVR, Simple Reset/Power-On Reset, single-channel supervisor, 2.9V threshold, active-low push-pull output, 619ms typical reset timeout, SOT-23-5 package, -40°C to 125°C junction temperature range.

$1.2100Ref. price · indicative, final on quote
Texas Instruments TPS3840PL29DBVR datasheet (PDF)
PackagingSC-74A, SOT-753
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

TPS3840PL29DBVR specifications
ParameterValue
TypeSimple Reset/Power-On Reset
MountingSurface Mount
Voltage - threshold2.9V
Number of voltages monitored1
Operating temperature-40°C~125°C(TJ)
ResetActive Low
OutputPush-Pull, Totem Pole
PackageTape & Reel (TR); Cut Tape (CT)
Reset timeout619ms Typical
CaseSC-74A, SOT-753

Product details

2.9V threshold supervisor for 3.3V and 3.0V rails

The TPS3840PL29DBVR monitors a single supply rail and asserts a reset when the voltage drops below 2.9V. That threshold suits 3.3V and 3.0V rails where a 10–15% drop below nominal signals a brown-out condition — the reset holds the processor until the rail recovers and the 619ms timeout elapses, giving the supply time to stabilise before the CPU starts executing again.

Active production in SOT-23-5

Wide junction temperature range for industrial and automotive

The junction rating means the die itself is qualified to 125°C, not just the case — relevant when the part sits near a hot regulator or power stage.

Frequently asked questions

What is the reset timeout for TPS3840PL29DBVR?

The typical reset timeout is 619ms. After the monitored voltage rises above the threshold, the reset output remains asserted for this duration before releasing, allowing the supply and oscillator to stabilise.

What is the closest functional equivalent to TPS3840PL29DBVR?

The TLV803EA29VDBZR is a peer part with the same 2.9V threshold and active-low reset, but its output is open-drain (requires a pull-up resistor) and its reset timeout is a minimum of 130ms versus the 619ms typical of the TPS3840PL29DBVR. The TLV803ED29DBZR has a 33ms minimum timeout. Neither is a drop-in replacement — the output driver and timeout differ.