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Texas Instruments TPS3840DL16DBVRQ1 — Power Management (PMIC / Gate Driver)

TPS3840DL16DBVRQ1 Simple Reset/Power-On Reset, AEC-Q100

MPNTPS3840DL16DBVRQ1
Active

Texas Instruments TPS3840DL16DBVRQ1, Automotive AEC-Q100 Simple Reset/Power-On Reset, Active Low, Open Drain Output, 1.6V Threshold, 619ms Typical Reset Timeout, -40°C to 125°C, SOT-23-5.

$1.3600Ref. price · indicative, final on quote
Texas Instruments TPS3840DL16DBVRQ1 datasheet (PDF)
PackagingSC-74A, SOT-753
RoHSROHS3 Compliant
SeriesAutomotive, AEC-Q100
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

TPS3840DL16DBVRQ1 specifications
ParameterValue
TypeSimple Reset/Power-On Reset
SeriesAutomotive, AEC-Q100
MountingSurface Mount
Voltage - threshold1.6V
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

What this supervisor does

The Texas Instruments TPS3840DL16DBVRQ1 is a single-channel Simple Reset/Power-On Reset IC designed to monitor a 1.6V voltage rail and assert a reset signal when the supply drops below that threshold. The 619 ms typical reset timeout holds the reset state long enough for the monitored rail and the system clock to stabilise after power-up, which is the sequencing margin a designer budgets for.

Automotive grade and temperature range

This part is qualified to AEC-Q100, the automotive stress-test qualification standard, and carries the full automotive series designation. For a BOM that needs to survive thermal cycling and high ambient heat — motor drives, battery management, ADAS sensors — this is the grade that fits without a waiver.

Frequently asked questions

Is TPS3840DL16DBVRQ1 automotive qualified?

Yes, the TPS3840DL16DBVRQ1 is qualified to AEC-Q100 and belongs to the Automotive series. The operating junction temperature range of -40°C to 125°C supports under-hood and high-temperature environments.

What is the reset timeout for TPS3840DL16DBVRQ1?

The typical reset timeout is 619 ms. That is the period the reset output stays asserted after the monitored voltage rises above the threshold, giving the system time to stabilise.

Does TPS3840DL16DBVRQ1 have an open drain output?

Yes, the output is open drain (open collector). It requires an external pull-up resistor to the logic supply voltage of the downstream device.

What is the difference between TPS3840DL16DBVR and TPS3840DL16DBVRQ1?

The Q1 suffix designates the automotive-grade, AEC-Q100 qualified variant. The non-Q1 version typically has a narrower commercial or industrial temperature range and lacks the automotive stress qualification. For designs that require AEC-Q100 compliance, the Q1 suffix is the correct choice.

When sourcing TPS3840DL16DBVRQ1, what is the closest functional second-source?

A close functional peer is the TLV803EA29VDBZR, also a simple reset/power-on reset with active low, open drain output in an SOT-23 package. However, the TLV803 has a shorter minimum reset timeout (130 ms) and a different threshold voltage (2.93 V). Verify the threshold and timeout match your design before substituting.