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Texas Instruments TPS3840PL18DBVR — Power Management (PMIC / Gate Driver)

TPS3840PL18DBVR TI Simple Reset/Power-On Reset IC

MPNTPS3840PL18DBVR
Active

Texas Instruments TPS3840PL18DBVR, Simple Reset/Power-On Reset, Active Low, Push-Pull Output, 1.8V Threshold, 619ms Typical Reset Timeout, SOT-23-5, -40°C to 125°C

$1.2100Ref. price · indicative, final on quote
Texas Instruments TPS3840PL18DBVR datasheet (PDF)
PackagingSC-74A, SOT-753
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

TPS3840PL18DBVR specifications
ParameterValue
TypeSimple Reset/Power-On Reset
MountingSurface Mount
Voltage - threshold1.8V
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

What this reset IC does on your rail

The TPS3840PL18DBVR is a single-channel voltage supervisor that asserts a reset signal when the monitored supply drops below 1.8V. It holds the reset output low for 619ms typical after the supply recovers, giving the downstream processor time to stabilize.

Housed in a SOT-23-5 package, the 5-pin footprint is a common supervisor layout — the same pad pattern used by the TLV803 series, making it a drop-in candidate for boards already laid out for that family.

Texas Instruments lists this part as Active.

Frequently asked questions

When sourcing TPS3840PL18DBVR, what is the closest functional second-source — TLV803EA29VDBZR?

The TLV803EA29VDBZR is a similar simple reset IC but with an open-drain output (not push-pull) and a 2.9V threshold with a 130ms minimum timeout. The TPS3840PL18DBVR has a push-pull output, 1.8V threshold, and a 619ms typical timeout. They are not direct pin-for-pin replacements; the output type and timeout differ.