# LM3880MFX-1AF

**Texas Instruments** · Supervisor And Reset ICs · SOT-23-6

LM3880MFX-1AF 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 | VCC | power_in | Input supply pin; the recommended supply range is 2.7 V to 5.5 V and the absolute maximum is 6 V, with a 0.1 µF ceramic bypass suggested where noise is present. |
| 2 | GND | power_in | Ground reference pin for the sequencer. |
| 3 | EN | input | Precision enable input with a 1.25 V (typical) threshold, a 7 µA internal pull-up, and an absolute range of -0.3 V to VCC + 0.3 V; the datasheet recommends not tying it directly to VCC. |
| 4 | FLAG3 | output | Open-drain output 3, which must be pulled up to a supply no higher than VCC + 0.3 V; it sinks at most 50 mA and has a low-level output of 0.4 V max at 1.2 mA. |
| 5 | FLAG2 | output | Open-drain output 2, which must be pulled up to a supply no higher than VCC + 0.3 V; it sinks at most 50 mA and has a low-level output of 0.4 V max at 1.2 mA. |
| 6 | FLAG1 | output | Open-drain output 1, which must be pulled up to a supply no higher than VCC + 0.3 V; it sinks at most 50 mA and has a low-level output of 0.4 V max at 1.2 mA. |

## Key specifications

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

## CAD (KiCad official)

- Symbol: `LM3880MFX-1AF`
- Footprint: `Package_TO_SOT_SMD:SOT-23-6`
- 3D model: SOT-23-6 (KiCad packages3D, STEP)
- 3D model files: `lm3880mfx-1af-etched.step` / `lm3880mfx-1af-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lm3880mfx-1af.step` / `lm3880mfx-1af.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/lm3880) (30 pp, sha256 `d06a410f635eefab`, retrieved 2026-10-08, 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/lm3880mfx-1af-datasheet.pdf)