# CN809L

**ShangHai Consonance Elec** · Supervisor and Reset ICs · SOT-23-3

CN809L from ShangHai Consonance Elec, in a SOT-23-3. 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 | GND | power_in | Ground reference for the device. |
| 2 | ~RESET~ | output | Active-low CMOS reset output. Driven low (asserted) whenever VCC is below the 4.63 V reset threshold; after VCC rises above VRES + VHYST the pin is held low for at least 140 ms (typ 240 ms, max 400 ms) before transitioning high. Push-pull CMOS drive: VOL <= 0.3 V at ISINK up to 5 mA, VOH >= VCC-0.4 V at ISRC up to 2.5 mA. |
| 3 | VCC | power_in | Positive supply input; also the voltage being monitored. Absolute max -0.3 V to +6.0 V; operating range 1.15 V (min guaranteed output) to 5.5 V (max). Typical IVCC = 3.2 uA at 3 V. A 0.1 uF bypass capacitor close to this pin is recommended to improve rejection of brief supply glitches. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | ShangHai Consonance Elec |
| Package | SOT-23-3 |
| Category | PMIC |
| Pins | 3 |

## Ordering variants

Same part, different packaging or reel option.

- `CN809L`

## CAD (KiCad official)

- Symbol: `CN809L`
- Footprint: `Package_TO_SOT_SMD:SOT-23-3`
- 3D model: SOT-23-3 (KiCad packages3D, STEP)
- 3D model files: `cn809l-etched.step` / `cn809l-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `cn809l.step` / `cn809l.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [ShangHai Consonance Elec datasheet](docs/cn809l-datasheet.pdf) (7 pp, sha256 `bbeb80fd1a0c3663`, 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).

[Datasheet PDF](docs/cn809l-datasheet.pdf)