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Texas Instruments TPS3801I50DCKR — Power Management (PMIC / Gate Driver)

TPS3801I50DCKR Simple Reset/Power-On Reset IC

MPNTPS3801I50DCKR
Active

Texas Instruments TPS3801I50DCKR, Simple Reset/Power-On Reset, Active Low, Push-Pull Output, 4.55V Threshold, 120ms Minimum Reset Timeout, -40°C to 85°C, SC-70-5.

$1.1100Ref. price · indicative, final on quote
Texas Instruments TPS3801I50DCKR datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

TPS3801I50DCKR specifications
ParameterValue
TypeSimple Reset/Power-On Reset
MountingSurface Mount
Voltage - threshold4.55V
Number of voltages monitored1
Operating temperature-40°C~85°C(TA)
ResetActive Low
OutputPush-Pull, Totem Pole
PackageTape & Reel (TR); Cut Tape (CT)
Reset timeout120ms Minimum
Case5-TSSOP, SC-70-5, SOT-353

Product details

Reset supervisor for a 5V rail — what the 4.55V threshold means

The TPS3801I50DCKR: That threshold is set for a nominal 5 V supply — it trips when the rail drops to about 91% of 5 V, giving the downstream processor a clean reset before the logic levels go indeterminate. The output is push-pull, totem-pole, active low — no external pull-up resistor needed. It drives the reset input of an MCU, FPGA, or DSP directly. The SC-70-5 package (also known as SOT-353) is a 5-pin surface-mount package that fits tight board layouts.

The SC-70-5 footprint is shared with many other TI reset supervisors — if you have a board already laid out for a TPS380x or TPS382x in the same package, this part drops in without a layout change. The 5-pin SOT-353 land pattern is standard; no exotic pad geometry.

Frequently asked questions

What is the reset timeout for TPS3801I50DCKR?

The reset timeout is a minimum of 120 ms. That is the guaranteed time the reset output stays low after the supply crosses the 4.55 V threshold — enough for most MCUs and FPGAs to complete their internal power-up sequence.

Is the reset output of TPS3801I50DCKR active high or active low?

Active low. The reset output goes low when the monitored voltage falls below the 4.55 V threshold and stays low for the 120 ms timeout after the supply recovers. It is a push-pull output, so it drives the reset pin directly without an external pull-up.