The TPS3802K33DCKR is a single-channel voltage supervisor that monitors a 2.93V threshold and asserts a reset signal when the supply drops below that level. It holds the reset output low for a minimum of 240ms after the supply returns above the threshold, giving the system time to stabilize before the processor starts. The SC-70-5 package (also known as SOT-353) is a compact 5-lead surface-mount package that fits well in portable or densely populated designs.
TPS3802K33DCKR Texas Instruments Simple Reset/Power-On
MPNTPS3802K33DCKR
Active
Texas Instruments TPS3802K33DCKR, Simple Reset/Power-On Reset, 2.93V threshold, Active Low push-pull output, 240ms minimum reset timeout, SC-70-5 package, -40°C to 85°C operating temperature.
$1.6000Ref. price · indicative, final on quote
Packaging5-TSSOP, SC-70-5, SOT-353
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026
Specifications
| Parameter | Value |
|---|---|
| Type | Simple Reset/Power-On Reset |
| Mounting | Surface Mount |
| Voltage - threshold | 2.93V |
| Number of voltages monitored | 1 |
| Operating temperature | -40°C~85°C(TA) |
| Reset | Active Low |
| Output | Push-Pull, Totem Pole |
| Package | Tape & Reel (TR); Cut Tape (CT) |
| Reset timeout | 240ms Minimum |
| Case | 5-TSSOP, SC-70-5, SOT-353 |
Product details
Frequently asked questions
Is TPS3802K33DCKR suitable for monitoring a 3.3V supply?
Yes. The 2.93V threshold is set to assert reset when a 3.3V rail drops below approximately 88% of its nominal value. This is a common threshold for 3.3V logic systems, ensuring the processor resets before the supply falls below the minimum operating voltage of typical 3.3V devices.
Does TPS3802K33DCKR have a push-pull or open-drain output?
It has a push-pull (totem pole) output. This means the reset output is actively driven both high and low, so no external pull-up resistor is needed. The output is active low, meaning it goes low during reset.
What is the closest functional alternative to TPS3802K33DCKR?
The TLV803EA29VDBZR and TLV803ED29DBZR are similar voltage supervisors with a 2.93V threshold, but they use an open-drain output and have different reset timeout periods (130ms and 33ms respectively). The TPS3802K33DCKR's push-pull output is a key difference — if your design requires an open-drain output for wired-OR reset sharing, the TLV803 variants are alternatives.