# HFP6291LR-G1

**HXY MOSFET** · DC-DC Converters · SOT-23-6L

HFP6291LR-G1 from HXY MOSFET, in a SOT-23-6L. 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 | SW | power_out | Switching node. Drain of the internal 4A power NMOS. Connect to the boost inductor and Schottky diode (e.g., SS34). Abs max Vss-0.3 to Vss+28V; leakage 1uA typ at VSW=20V. High-frequency node; keep traces short and isolated. |
| 2 | GND | power_in | Ground/return reference for the IC (Vss). Connect directly to the system ground plane near input/output capacitors. |
| 3 | FB | input | Feedback input to the error amplifier. Internal reference VFB = 0.6V (typ, 588-612 mV). Output voltage set by external divider: VOUT = 0.6V x (1 + R1/R2); R1 in the hundreds of kΩ. |
| 4 | EN | input | Chip enable input, active high. VENH >= 1.2V (enable), VENL <= 0.4V (shutdown). Shutdown current IOFF ~0.01uA (1uA max) when VEN < VENL. |
| 5 | VIN | power_in | Supply input. Operating range 2-24V; abs max Vss-0.3 to Vss+24V. UVLO falling ~1.7-2V with ~100mV hysteresis. Decouple with >=22uF close to the pin. |
| 6 | NC | unconnected | No connect. Leave floating (datasheet: 悬空). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | HXY MOSFET |
| Package | SOT-23-6L |
| Category | PMIC |
| Pins | 6 |

## Ordering variants

Same part, different packaging or reel option.

- `HFP6291LR-G1`

## CAD (KiCad official)

- Symbol: `HFP6291LR-G1`
- Footprint: `Package_TO_SOT_SMD:SOT-23-6`
- 3D model: SOT-23-6L (KiCad packages3D, STEP)
- 3D model files: `hfp6291lr-g1-etched.step` / `hfp6291lr-g1-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `hfp6291lr-g1.step` / `hfp6291lr-g1.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [HXY MOSFET datasheet](docs/hfp6291lr-g1-datasheet.pdf) (6 pp, sha256 `e136b6fd95a93370`, retrieved 2026-08-17, tier: lcsc)
- **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/hfp6291lr-g1-datasheet.pdf)