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Texas Instruments TPS3840DL44DBVRQ1 — Power Management (PMIC / Gate Driver)

TPS3840DL44DBVRQ1 – 4.4V Threshold, 619ms Reset, AEC-Q100

MPNTPS3840DL44DBVRQ1
Active

Texas Instruments Automotive, AEC-Q100 series, TPS3840DL44DBVRQ1, Simple Reset/Power-On Reset, Active Low, Open Drain, 4.4V threshold, 619ms typical timeout, -40°C to 125°C, SOT-23-5 package.

$1.1900Ref. price · indicative, final on quote
Texas Instruments TPS3840DL44DBVRQ1 datasheet (PDF)
PackagingSC-74A, SOT-753
RoHSROHS3 Compliant
SeriesAutomotive, AEC-Q100
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

TPS3840DL44DBVRQ1 specifications
ParameterValue
TypeSimple Reset/Power-On Reset
SeriesAutomotive, AEC-Q100
MountingSurface Mount
Voltage - threshold4.4V
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

4.4V threshold supervisor for 5V rails

It monitors a single supply rail and asserts a reset output when the voltage drops below the 4.4V threshold. The reset output is active-low, open-drain, so it can be wire-ORed with other reset sources on the board. The 619ms typical reset timeout holds the system in reset long enough for the supply to stabilise after a brownout, avoiding premature startup into an unsettled rail.

Compared to the TLV803EA29VDBZR, which has a 130ms minimum timeout and a 1.0V minimum supply, the TPS3840DL44DBVRQ1 offers a longer 619ms timeout and a fixed 4.4V threshold — better suited for 5V rails where a longer debounce period is needed to filter supply noise.

Active production, SOT-23-5 package

Texas Instruments continues to manufacture this part, so production planning can proceed without obsolescence risk. Supplied in a SOT-23-5 package (SC-74A, SOT-753) with surface-mount mounting. The package footprint is standard for a 5-pin supervisor, making PCB layout straightforward.

Frequently asked questions

Where can I buy TPS3840DL44DBVRQ1 and how is it quoted?

The TPS3840DL44DBVRQ1 is available through our distribution channel. As an active Texas Instruments part, we can quote it against your BOM quantity. Submit an RFQ for current pricing and lead time — no stock-holding claim is made here.

What is the exact reset timeout of TPS3840DL44DBVRQ1?

The reset timeout is 619ms typical. This is the time the output stays asserted after the monitored voltage rises above the 4.4V threshold.

Is TPS3840DL44DBVRQ1 a suitable replacement for TPS3840DL44?

The TPS3840DL44DBVRQ1 is the automotive-qualified (AEC-Q100) variant of the base TPS3840DL44. The threshold and timeout are identical; the suffix 'DBVRQ1' indicates the SOT-23-5 package and automotive grade. It is a direct functional replacement in the same footprint, provided the application requires the wider temperature range and qualification.

What are the operating conditions for TPS3840DL44DBVRQ1?

It monitors a single voltage with a 4.4V threshold and provides an active-low, open-drain reset output with a 619ms typical timeout.

Does TPS3840DL44DBVRQ1 meet AEC-Q100 automotive qualification?

Yes, the device is listed as Automotive, AEC-Q100 series, confirming it meets the stress and reliability requirements for automotive applications.