component

TPS3808

Public Unreviewed

by Ray

TI voltage supervisor / reset IC, SOT-23-6. Adjustable threshold, programmable reset delay, manual reset. Datasheet-verified.

componentpowersupervisorreset-icvoltage-monitorsot-23-6texas-instruments
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README

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TPS3808

Texas Instruments · Voltage supervisor · SOT-23-6

Watches a supply rail and holds an open-drain RESET low until the rail is good and a delay has elapsed. The threshold is set by a resistor divider into SENSE (adjustable versions) or fixed by order code, and a single capacitor at CT sets the reset time-out from microseconds to seconds. A manual-reset input (MR) forces a reset on command. It draws under 3 uA, so it suits battery-powered supervision. A flexible single-channel reset generator.

Pinout

Pin Name Type Function
1 RESET output Active-low open-drain RESET output. Asserted (low) when SENSE < VIT or MR is low. Requires a 10 kΩ to 1 MΩ pull-up; may be pulled above VDD.
2 GND power_in Ground return for the device.
3 MR input Active-low manual reset input. Driving MR low asserts RESET. Internally tied to VDD by a ~90 kΩ pull-up (may be left open).
4 CT input Reset-period programming pin. Open = fixed delay; 40 kΩ-200 kΩ to VDD selects a discrete delay; a ≥100 pF capacitor to GND sets a user-programmable 1.25 ms-10 s delay.
5 SENSE input Voltage-monitor input. When VSENSE drops below the threshold VIT, RESET is asserted. On the adjustable G01 variant SENSE is compared to an internal 0.405 V reference for external divider use.
6 VDD power_in Supply voltage, 1.7 V to 6.5 V. Bypass with a 0.1 µF ceramic capacitor placed close to the pin.

Key specifications

Parameter Value
Type Voltage supervisor / reset IC
Threshold Adjustable (SENSE) or fixed by order code
Reset delay Programmable via CT capacitor
Output Open-drain, active-low RESET
Manual reset MR input
Quiescent current < 3 uA
Supply 0.8-6.5 V
Package SOT-23-6

Ordering variants

Same part, different packaging or reel option.

  • TPS3808G09DBVR (fixed 0.9 V)
  • TPS3808G33DBVR (fixed 3.3 V)

The extractor listed these alongside TPS3808, but they are different parts with different electrical characteristics. Do not order them as substitutes.

  • TPS3808G01DBVR (adjustable)

CAD (KiCad official)

  • Symbol: Power_Supervisor:TPS3808DBV (KiCad official)
  • Footprint: Package_TO_SOT_SMD:SOT-23-6
  • 3D model: SOT-23-6 (KiCad packages3D, STEP)

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: Texas Instruments datasheet (38 pp, sha256 4b08ee1fbc7daba9, retrieved 2026-08-17, tier: manufacturer)
  • Extractor: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF