TPS3823A-33DBVR
Public Made by Adomby adom
Texas Instruments Supervisor and Reset ICs, SOT-23-5. Datasheet-verified pinout, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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README
markdownTPS3823A-33DBVR
Texas Instruments · Supervisor and Reset ICs · SOT-23-5
TPS3823A-33DBVR from Texas Instruments, in a SOT-23-5. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | RESET | output | Active-low reset output, push-pull. Asserts low when VDD < VIT- (2.93V typ for -33 variant) or when MR is pulled low, and remains low for the reset delay (td = 200ms typ) after VDD recovers. Also asserts on WDI timeout. |
| 2 | GND | power_in | Ground reference for the device. |
| 3 | MR | input | Active-low manual reset input. Pull low to force a reset; RESET remains asserted while MR is low and for the reset delay after MR returns high. Has an internal ~52kΩ pull-up to VDD; leave floating or tie to VDD if unused. |
| 4 | WDI | input | Watchdog input. A rising or falling edge on WDI clears the watchdog timer. If WDI remains high or low longer than the watchdog timeout (tout = 1.6s typ for TPS3823A), a reset is triggered. Tie to a high-impedance state (or leave floating) if unused to avoid spurious resets. |
| 5 | VDD | power_in | Supply voltage input, 1.1V to 5.5V recommended. Provides power and is the voltage being monitored against the internal 2.93V threshold (for the -33 3.3V variant). A 0.1µF bypass capacitor near this pin is recommended for threshold stability. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOT-23-5 |
| Category | PMIC |
| Pins | 5 |
Ordering variants
Same part, different packaging or reel option.
TPS3823A-33DBVRTPS3823A-33DBVRDBVT
CAD (KiCad official)
- Symbol:
TPS3823A-33DBVR - Footprint:
Package_TO_SOT_SMD:SOT-23-5 - 3D model: SOT-23-5 (KiCad packages3D, STEP)
- 3D model files:
tps3823a-33dbvr-etched.step/tps3823a-33dbvr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);tps3823a-33dbvr.step/tps3823a-33dbvr.glbare the bare package body.
3D model downloads
Two STEP files. Same geometry, different body top:
| File | Size | Use it when |
|---|---|---|
tps3823a-33dbvr.step |
85 KB | You want the bare part, or you mark your own boards. |
tps3823a-33dbvr-etched.step |
3.1 MB | You want the part with TPS3823A-33DBVR already on it. |
The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 729 faces against 102 in the bare model. It survives export, section views, and rendering in any CAD tool, and it drops straight into KiCad or Fusion with no extra setup.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (35 pp, sha256
f0ddd0a85e54c699, retrieved 2026-08-17, tier: lcsc) - Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- 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).