component
TPCAT823RTDI-GT3
Public Unreviewedby Ray
TECH PUBLIC 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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PCB Footprint
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Datasheet
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README
markdownTPCAT823RTDI-GT3
TECH PUBLIC · Supervisor and Reset ICs · SOT-23-5
TPCAT823RTDI-GT3 from TECH PUBLIC, 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. Pulses low for 200ms (typ) when triggered, and remains low whenever VCC is below the reset threshold or when MR is a logic low. Remains low for 200ms after VCC rises above the reset threshold, the watchdog triggers a reset, or MR goes low-to-high. VOH >= 0.8*VCC at ISOURCE=1mA; VOL <= 0.3V at ISINK=4mA. |
| 2 | GND | power_in | Ground reference for the device. |
| 3 | MR | input | Active-low Manual Reset input. Triggers a reset pulse when pulled below 0.3VCC. Has an internal 52k ohm (typ, 35-75k) pull-up to VCC and can be driven from TTL/CMOS logic or shorted to ground with a switch. Leave open or connect to VCC if unused. VIL <= 0.15*VCC; VIH >= 0.85VCC; minimum pulse width 1.0us. |
| 4 | WDI | input | Watchdog Input. If WDI remains high or low longer than the watchdog timeout period (1.12-2.40s, 1.60s typ) the internal watchdog timer runs out and a reset is triggered. The timer clears on each rising/falling edge of WDI or whenever reset is asserted. Leaving WDI unconnected or driving it from a tri-stated buffer disables the watchdog. VIL <= 0.15VCC; VIH >= 0.85VCC; minimum pulse width 50ns. |
| 5 | VCC | power_in | Supply voltage input (absolute max -0.3 to +8.0V). Operating range 1.0V to 7V. Supply current typically 3-4uA (6uA max) with WDI and MR unconnected. Monitored against the internal reset threshold (2.63V typ for the R version). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | TECH PUBLIC |
| Package | SOT-23-5 |
| Category | PMIC |
| Pins | 5 |
Ordering variants
Same part, different packaging or reel option.
TPCAT823RTDI-GT3
CAD (KiCad official)
- Symbol:
TPCAT823RTDI-GT3 - Footprint:
Package_TO_SOT_SMD:SOT-23-5 - 3D model: SOT-23-5 (KiCad packages3D, STEP)
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: TECH PUBLIC datasheet (7 pp, sha256
d947d008ae077258, retrieved 2026-08-17, tier: lcsc) - 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).