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Contents

Pinout
Key specifications
Electrical characteristics
CAD (KiCad official)
Provenance

README

markdown

LM317LIPK-HXY

HXY MOSFET · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-89

LM317LIPK-HXY from HXY MOSFET, in a SOT-89. 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	ADJ	passive	Adjustable pin of the regulator, where the adjustment current IADJ is listed at 46 to 100 µA and is controlled to less than 100 µA per Note 3.
2	VIN	power_in	Input voltage pin, where the input-output differential VI-VO is rated at 40 V maximum and at least 3 V is required for the specified regulation; CIN of 0.1 µF is required if the regulator is far from the supply filter.
3	VOUT	power_out	Regulated output pin, adjustable from 1.2 V to 37 V, with output current rated at 100 mA minimum and 200 mA maximum under the stated conditions.

Key specifications

Parameter	Value
Manufacturer	HXY MOSFET
Package	SOT-89
Category	Power Management (PMIC)
Pins	3

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter	Symbol	Min	Typ	Max	Unit	Conditions	Page
Input-output Voltage Differential	VI-VO			40	V		2
Lead Temperature (Soldering)	TSOL			230	℃	10 sec	2
Operating Junction Temperature Range	TJOPR	-40		125	℃		2
Storage Temperature Range	TSTG	-65		125	℃		2
Line Regulation	△Vo		0.01	0.04	%/V	TA=-40 ∼125℃; 3V≤VI-VO≤40V	2
Line Regulation	△Vo		0.02	0.07	%/V	3V≤VI-VO≤40V	2
Load Regulation	△Vo		10	25	mV	TA=25℃, 10㎃≤Io≤IMAX, VO≤5V	2
Load Regulation	△Vo		0.1	0.5	%/V	TA=25℃, 10㎃≤Io≤IMAX, VO≥5V	2
Load Regulation	△Vo		20	80	mV	10㎃≤Io≤IMAX, VO≤5V	2
Load Regulation	△Vo		0.3	1.7	%/V	10㎃≤Io≤IMAX, VO≥5V	2
Adjustable Pin Current	IADJ		46	100	㎂		2
Adjustable Pin Current Change	△IADJ		0.2	5	㎂	3V≤VI-VO≤40V, 10㎃≤IO≤IMAX, P≤PMAX	2
Reference Voltage	VREF	1.2	1.25	1.3	V	3V≤VIN-VOUT≤40V, 10㎃≤Io≤IMAX, PD≤PMAX	2
Minimum Load Current to Maintain Regulation	L(MIN)		3.5	10	mA	VI-Vo=40V	2
Maximum Output Current	IO(MAX)		100	200	mA	VI-Vo≤5V, PD≤PMAX	2
Maximum Output Current	IO(MAX)		0.156	0.4	mA	VI-VO≤40V, PD≤PMAX, TA=25℃	2
RMS Noise, % of VOUT	eN		0.003	0.01	%/VO	TA=25℃, 10Hz≤f≤10KHz	2
Ripple Rejection without CADJ	RR		60		dB	VO=10V, f=120Hz, without CADJ	2
Ripple Rejection with CADJ	RR		66	75	dB	VO=10V, f=120Hz, CADJ=10㎌	2
Long-Term Stability	ST		0.3	1	%	TJ=THIGH; TA=25℃, for end point measurements, 1000HR	2

CAD (KiCad official)

Symbol: LM317LIPK-HXY
Footprint: Package_TO_SOT_SMD:SOT-89-3
3D model: SOT-89 (KiCad packages3D, STEP)
3D model files: lm317lipk-hxy-etched.step / lm317lipk-hxy-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); lm317lipk-hxy.step / lm317lipk-hxy.glb are the bare package body.

Provenance

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

Datasheet: HXY MOSFET datasheet (4 pp, sha256 3bcbe0cdd132497c, retrieved 2026-10-17, 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