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Texas Instruments TPS3128E15DBVT — Power Management (PMIC / Gate Driver)

TPS3128E15DBVT Simple Reset/Power-On Reset IC

MPNTPS3128E15DBVT
Active

Texas Instruments TPS3128E15DBVT, Simple Reset/Power-On Reset, Active Low, Open Drain, 1.43V threshold, 100ms minimum reset timeout, -40°C to 85°C, SOT-23-5 package.

$1.8123Ref. price · indicative, final on quote
Texas Instruments TPS3128E15DBVT datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

TPS3128E15DBVT specifications
ParameterValue
TypeSimple Reset/Power-On Reset
MountingSurface Mount
Voltage - threshold1.43V
Number of voltages monitored1
Operating temperature-40°C~85°C(TA)
ResetActive Low
OutputOpen Drain or Open Collector
PackageTape & Reel (TR); Cut Tape (CT)
Reset timeout100ms Minimum
CaseSC-74A, SOT-753

Product details

1.43V threshold — what it monitors and why

Its reset threshold is 1.43V, making it a fit for 1.5V or 1.8V core supplies in DSPs, MCUs, or FPGAs that require a precise undervoltage lockout during power-up or brownout conditions. The reset output is active-low, open-drain — the pin pulls low when the monitored voltage drops below 1.43V, and releases after a minimum 100ms timeout once the rail recovers. The open-drain topology lets you pull up the reset line to any voltage up to the absolute maximum of the output transistor, which is useful when the reset input on the processor runs at a different logic level than the monitored supply.

Frequently asked questions

What is the exact reset threshold voltage of TPS3128E15DBVT?

The reset threshold voltage is 1.43V. This is the voltage at which the device asserts a reset (active-low, open-drain output) when the monitored rail falls below that level.

Can TPS3128E15DBVT be used with a 1.8V or 3.3V supply?

Yes. The device monitors a single rail with a 1.43V threshold, so it is suited for a 1.5V or 1.8V supply. For a 3.3V rail, the 1.43V threshold would assert reset well below the nominal operating voltage — that is not the intended use. The open-drain output can be pulled up to 3.3V or 1.8V independently of the monitored rail.

What is the difference between TPS3128E15DBVT and TPS3128E15DBVR?

The two suffixes — DBVT and DBVR — refer to different packaging and reel options within the same SOT-23-5 package. DBVT is Tape & Reel (TR) with a specific reel quantity; DBVR is also Tape & Reel but with a different reel count or tape width. The electrical specifications (threshold, timeout, temperature range) are identical.