# LM3880QMFX-1AE

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

LM3880QMFX-1AE from Texas Instruments, in a SOT-23-6. 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 | VCC | power_in | Input supply pin, 2.7 V to 5.5 V operating range (absolute max 6 V). A 0.1 µF ceramic bypass capacitor is recommended when noise is present on VCC. |
| 2 | GND | power_in | Device ground reference. |
| 3 | EN | input | Precision enable input referenced to an internal 1.25 V bandgap (VEN threshold 1.0 V min / 1.4 V max). Sourcing 7 µA internal pull-up current; asserting EN starts the power-up sequence, de-asserting starts the power-down sequence. Should not be tied directly to VCC. |
| 4 | FLAG3 | output | Open-drain sequencer output 3, requires external pull-up (typ. 100 kΩ) to VCC or a separate flag supply not exceeding VCC + 0.3 V. VOL = 0.4 V max at IFLAG = 1.2 mA; max sink current 50 mA; leakage 20 nA max at 3.3 V. |
| 5 | FLAG2 | output | Open-drain sequencer output 2, requires external pull-up (typ. 100 kΩ) to VCC or a separate flag supply not exceeding VCC + 0.3 V. VOL = 0.4 V max at IFLAG = 1.2 mA; max sink current 50 mA; leakage 20 nA max at 3.3 V. |
| 6 | FLAG1 | output | Open-drain sequencer output 1, requires external pull-up (typ. 100 kΩ) to VCC or a separate flag supply not exceeding VCC + 0.3 V. VOL = 0.4 V max at IFLAG = 1.2 mA; max sink current 50 mA; leakage 20 nA max at 3.3 V. |

## Key specifications

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

## Ordering variants

Same part, different packaging or reel option.

- `LM3880QMF-1AE/NOPB`
- `LM3880QMFE-1AE/NOPB`
- `LM3880QMFX-1AE/NOPB`

## CAD (KiCad official)

- Symbol: `LM3880QMFX-1AE`
- Footprint: `Package_TO_SOT_SMD:SOT-23-6`
- 3D model: SOT-23-6 (KiCad packages3D, STEP)
- 3D model files: `lm3880qmfx-1ae-etched.step` / `lm3880qmfx-1ae-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lm3880qmfx-1ae.step` / `lm3880qmfx-1ae.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-q1) (None pp, sha256 `cff19f703872dfd7`, 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/lm3880qmfx-1ae-datasheet.pdf)