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)

Provenance

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

Datasheet: HXY MOSFET datasheet (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