component
LM809M3-4.38
Public Made by Adomby adom
Texas Instruments Supervisor And Reset ICs, SOT-23-3. Pinout cross-checked by two models against the datasheet, 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
markdownLM809M3-4.38
Texas Instruments · Supervisor And Reset ICs · SOT-23-3
LM809M3-4.38 from Texas Instruments, in a SOT-23-3. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | GND | power_in | Ground reference for the supervisor. |
| 2 | RESET | output | Active-low reset output (LM809): RESET remains low while VCC is below the reset threshold and for 240 ms after VCC rises above the reset threshold, with VOL specified at up to 0.4 V at 3.2 mA sink for the 4.38 V version. |
| 3 | VCC | power_in | Supply voltage monitored against the factory-programmed reset threshold; recommended input range is 1.2 V to 5.5 V over -40°C to 105°C and the absolute maximum is 6 V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOT-23-3 |
| Category | Power Management (PMIC) |
| Pins | 3 |
CAD (KiCad official)
- Symbol:
LM809M3-4.38 - Footprint:
Package_TO_SOT_SMD:SOT-23-3 - 3D model: SOT-23-3 (KiCad packages3D, STEP)
- 3D model files:
lm809m3-4-38-etched.step/lm809m3-4-38-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lm809m3-4-38.step/lm809m3-4-38.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (20 pp, sha256
e95efdb789aa7ac6, retrieved 2026-10-08, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-sonnet-5-5(agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish. - CAD: KiCad official libraries (CC-BY-SA 4.0).