# LN809C2641MR-G

**NATLINEAR** · Supervisor And Reset ICs · SOT-23-3L

LN809C2641MR-G from NATLINEAR, in a SOT-23-3L. 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 detector; the CMOS output goes to ground when VIN falls below the detect voltage VDF. |
| 2 | VDD | power_in | Supply input VIN with an operating range of 0.7 V to 6.0 V and an absolute maximum of 6 V; the detect voltage is monitored on this pin. |
| 3 | RESET | output | Reset output (CMOS push-pull for the C variant, so output is CMOS-compatible); it follows VIN and is held low for the internal delay (70 ms to 120 ms for delay code 1 in this MPN's code, 130 ms to 350 ms for code 4) after VIN recovers above VDR. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | NATLINEAR |
| Package | SOT-23-3L |
| Category | Power Management (PMIC) |
| Pins | 3 |

## Electrical characteristics

Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Input voltage operating range (VDF = 2.63V to 4.63V) | VIN | 0.7 |  | 6 | V | VDF= 2.63V 至 4.63V | 4 |
| Input voltage (absolute maximum) | VIN |  |  | 6 | V |  | 3 |
| Output current (absolute maximum) | IOUT |  |  | 50 | mA |  | 3 |
| Supply current | ISS |  | 1 | 1.2 | μA | VIN = 1.5V | 4 |
| Supply current | ISS |  | 1 | 1.3 | μA | VIN = 2.0V | 4 |
| Supply current | ISS |  | 1.1 | 1.3 | μA | VIN = 3.0V | 4 |
| Supply current | ISS |  | 1.2 | 1.5 | μA | VIN = 5.0V | 4 |
| Transient delay time (VDR → VOUT conversion) | TDLY | 130 |  | 350 | ms | VDR → VOUT 转换, LN809***4*** | 4 |
| Detect voltage accuracy (±1.0%) |  | -1 |  | 1 | % | Part code 1 = ±1.0% | 1 |
| Detect voltage temperature coefficient |  | -100 |  | 100 | ppm/℃ |  | 4 |
| Output voltage CMOS (absolute maximum, lower limit) | VOUT | -0.3 |  |  | V | CMOS; VSS -0.3 ~ VIN + 0.3 | 3 |
| Power dissipation SOT23 (absolute maximum) | Pd |  |  | 150 | mW | SOT23 | 3 |
| Operating temperature range | Topr | -30 |  | 85 | ℃ |  | 3 |
| Storage temperature range | Tstg | -40 |  | 125 | ℃ |  | 3 |
| Output current CMOS P-ch | IOUT |  | -10 |  | mA | CMOS, P-ch VDF=2.63V, VIN = 6.0V | 4 |
| Detect voltage (nominal) | VDF |  | 2.63 |  | V | VDF(T)=2.63V | 4 |

## CAD (KiCad official)

- Symbol: `LN809C2641MR-G`
- Footprint: `Package_TO_SOT_SMD:SOT-23-3`
- 3D model: SOT-23-3L (KiCad packages3D, STEP)
- 3D model files: `ln809c2641mr-g-etched.step` / `ln809c2641mr-g-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ln809c2641mr-g.step` / `ln809c2641mr-g.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [NATLINEAR datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590230421331353600) (8 pp, sha256 `48ad781fed78eba4`, retrieved 2026-10-17, 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:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `claude-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).

[Datasheet PDF](docs/ln809c2641mr-g-datasheet.pdf)