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LM317DCYR-HXY

Public Made by Adom

by adom

HXY MOSFET Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-223. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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LM317DCYR-HXY

HXY MOSFET · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-223

LM317DCYR-HXY from HXY MOSFET, in a SOT-223. 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 Adjust pin tied to the internal reference; the datasheet gives reference voltage VREF 1.20 to 1.30 V (1.25 V typ) and adjustable pin current IADJ of 46 µA typ and 100 µA max.
2 VOUT power_out Regulated output, adjustable over 1.2 to 37 V and supplying more than 1.5 A of load current, with a maximum output current IO(MAX) of 1.0 A min or 2.2 A typ at TA=25°C per the datasheet table.
3 VIN power_in Input supply pin; the input-output differential VI-VO must stay within 3 V to 40 V, with 40 V as the absolute maximum input-output differential.

Key specifications

Parameter Value
Manufacturer HXY MOSFET
Package SOT-223
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
Line Regulation (TA=25℃) Rline 0.01 0.04 %/V TA=25℃, 3V≤VI-VO≤40V 2
Line Regulation (over temperature) Rline 0.02 0.07 %/V 3V≤VI-VO≤40V 2
Load Regulation (VO<5V, TA=25℃) Rload 18 25 mV TA=25℃, 10mA≤IO≤IMAX, VO<5V 2
Load Regulation (VO≥5V, TA=25℃) Rload 0.4 0.5 %VO TA=25℃, 10mA≤IO≤IMAX, VO≥5V 2
Load Regulation (VO<5V, over temperature) Rload 40 70 mV 10mA≤IO≤IMAX, VO<5V 2
Load Regulation (VO≥5V, over temperature) Rload 0.8 1.5 %VO 10mA≤IO≤IMAX, VO≥5V 2
Adjustable Pin Current IADJ 46 100 µA 2
Adjustable Pin Current Change ΔIADJ 2 5 µA 3V≤VI-VO≤40V, 10mA≤IO≤IMAX, PD≤PMAX 2
Reference Voltage VREF 1.2 1.25 1.3 V 3V≤VIN-VO≤40V, 10mA≤IO≤IMAX, PD≤PMAX 2
Minimum Load Current to Maintain Regulation IL(MIN) 3.5 12 mA VI-VO=40V 2
RMS Noise, % of VOUT eN 0.003 0.01 %/ VO TA=25℃, 10Hz≤f≤10KHz 2
Long-Term Stability ST 0.3 1 % TJ=THIGH; TA=25℃ for end point measurements, 1000HR 2
Input-Output Voltage Differential VI-VO 40 V 2
Lead Temperature TLEAD 230 ℃ 2
Operating Junction Temperature Range TJ 0 125 ℃ 2
Storage Temperature Range Tstg -55 125 ℃ 2
Temperature Coefficient of Output Voltage ΔVO/ΔT -0.02 0.02 %/℃ 2
Thermal Resistance Junction to Case RθJC 5 ℃/W 2

CAD (KiCad official)

  • Symbol: LM317DCYR-HXY
  • Footprint: Package_TO_SOT_SMD:SOT-223-3_TabPin2
  • 3D model: SOT-223 (KiCad packages3D, STEP)
  • 3D model files: lm317dcyr-hxy-etched.step / lm317dcyr-hxy-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); lm317dcyr-hxy.step / lm317dcyr-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 9d4e7e1a83aa0259, retrieved 2026-10-19, 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