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Texas Instruments TPS3840DL29DBVR — Power Management (PMIC / Gate Driver)

TPS3840DL29DBVR Power Supply Monitor, 2.9V Threshold

MPNTPS3840DL29DBVR
Active

Texas Instruments TPS3840DL29DBVR power supply monitor, 2.9V threshold, active-low open-drain output, 619ms typical reset timeout, SOT-23-5 package, -40°C to 125°C operating range.

$0.9100Ref. price · indicative, final on quote
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

TPS3840DL29DBVR specifications
ParameterValue
TypePower Supply Monitor
MountingSurface Mount
Voltage - threshold2.9V
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 timeout619ms Typical
CaseSC-74A, SOT-753

Product details

2.9 V threshold supervisor for single-rail monitoring

The 619 ms typical reset timeout holds the downstream device in reset long enough for the supply to stabilise after power-up, covering the majority of processor and FPGA power-on sequences without external timing components.

619 ms timeout — what it buys the power-up sequence

A 619 ms reset timeout means the output stays low for over half a second after the supply crosses the 2.9 V threshold. If your system needs a shorter or longer delay, the TPS3840 family offers other timeout options — this variant is the mid-range choice.

SOT-23-5 footprint and 125°C junction rating

Housed in a SOT-23-5 package (SC-74A), this supervisor occupies minimal board area and is a direct footprint replacement for many industry-standard voltage supervisors.

Frequently asked questions

What is the reset timeout of TPS3840DL29DBVR?

The reset timeout is 619 ms typical. This is the delay from when the monitored voltage rises above the 2.9 V threshold to when the reset output de-asserts.