# LM2681M6X

**Texas Instruments** · Charge Pumps · SOT-23-6

LM2681M6X from Texas Instruments, in a SOT-23-6. 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 | V+ | power_in | Positive supply input for voltage-doubler operation, specified from 2.5 V to 5.5 V; in voltage-split mode this pin becomes the positive voltage output. |
| 2 | GND | power_in | Power supply ground input, which also serves as the ground reference for the internal oscillator that runs from OUT to GND (OUT to GND must exceed 1.8 V for the oscillator to operate). |
| 3 | CAP− | passive | Connect to the negative terminal of the charge-pump capacitor C1. |
| 4 | GND | power_in | Second power supply ground input, same function as pin 2. |
| 5 | OUT | power_out | Positive voltage output in doubler mode (2V+ at no load) with 30 mA maximum continuous output current; absolute maximum ratings are 11.6 V to GND and 5.8 V from OUT to V+, and in split mode this pin is the supply input. |
| 6 | CAP+ | passive | Connect to the positive terminal of the charge-pump capacitor C1. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOT-23-6 |
| Category | Power Management (PMIC) |
| Pins | 6 |

## CAD (KiCad official)

- Symbol: `LM2681M6X`
- Footprint: `Package_TO_SOT_SMD:SOT-23-6`
- 3D model: SOT-23-6 (KiCad packages3D, STEP)
- 3D model files: `lm2681m6x-etched.step` / `lm2681m6x-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lm2681m6x.step` / `lm2681m6x.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Texas Instruments datasheet](https://www.ti.com/cn/lit/gpn/lm2681) (18 pp, sha256 `51aef91b6b6c2c74`, retrieved 2026-10-10, tier: lcsc)
- **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/lm2681m6x-datasheet.pdf)