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Texas Instruments TPS3840DL28DBVRQ1 — Power Management (PMIC / Gate Driver)

TPS3840DL28DBVRQ1 – TI Automotive Supervisor, 2.8V Threshold

MPNTPS3840DL28DBVRQ1
Active

Texas Instruments TPS3840DL28DBVRQ1, Automotive AEC-Q100 Simple Reset/Power-On Reset, 2.8V threshold, Active Low open-drain output, 619 ms reset timeout, SOT-23-5 package.

$1.4300Ref. price · indicative, final on quote
Texas Instruments TPS3840DL28DBVRQ1 datasheet (PDF)
PackagingSC-74A, SOT-753
RoHSROHS3 Compliant
SeriesAutomotive, AEC-Q100
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

TPS3840DL28DBVRQ1 specifications
ParameterValue
TypeSimple Reset/Power-On Reset
SeriesAutomotive, AEC-Q100
MountingSurface Mount
Voltage - threshold2.8V
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

Active production – automotive-grade supervisor for 3.3V and 5V rails

The TPS3840DL28DBVRQ1 is a Texas Instruments simple reset IC, part of the Automotive AEC-Q100 series, designed to monitor a single voltage rail and assert a reset signal when the supply drops below a 2.8V threshold.

2.8V threshold and 619 ms timeout – what they mean for rail monitoring

The 2.8V threshold is set to detect undervoltage on a nominal 3.3V or 5V supply before the downstream logic enters an indeterminate state. The 619 ms typical reset timeout holds the output low long enough for the power rail to stabilise after a brownout or during power-up, preventing premature release that could cause erratic boot behaviour.

Sourcing and lifecycle – active status, automotive qualification, and packaging options

The automotive AEC-Q100 qualification is listed on the product series, making it suitable for production programs requiring that certification.

Frequently asked questions

Is TPS3840DL28DBVRQ1 automotive qualified AEC-Q100?

Yes, it is part of the Automotive, AEC-Q100 series.

What is the output type and reset polarity of TPS3840DL28DBVRQ1?

The output is open drain or open collector and the reset is active low. This means the output pulls low when the monitored voltage falls below the threshold.

Is TPS3840DL28DBVRQ1 a replacement for TPS3840DL28DBVT?

The base product number is TPS3840, and the suffix differences (DBVRQ1 vs DBVT) typically indicate packaging or qualification variations. Confirm the specific suffix requirements with your BOM; the threshold and timeout are the same at 2.8V and 619 ms typical.

What is the closest functional second-source for TPS3840DL28DBVRQ1?

The TLV803EA29VDBZR is a peer with a similar active-low, open-drain output and a 2.93V threshold, but its reset timeout is 130 ms minimum versus the 619 ms typical of the TPS3840. The TLV803ED29DBZR has a 33 ms minimum timeout. Both are AEC-Q100 qualified and in SOT-23 packages, but the timeout difference may affect power-up sequencing.