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LP2981A-50DBVR-HXY

Public Made by Adom

by adom

HXY MOSFET Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-23-5L. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

componentpower management (pmic)lp2981a-50dbvr-hxyfactory-2.0.0extractor-text
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3D Model

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Symbol & Footprint

Schematic Symbol

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PCB Footprint

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Datasheet

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Contents

README

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LP2981A-50DBVR-HXY

HXY MOSFET · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-23-5L

LP2981A-50DBVR-HXY from HXY MOSFET, in a SOT-23-5L. 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 VIN power_in Input supply pin, where the electrical characteristics limit VIN to 24 V and a ceramic bypass capacitor of at least 1 µF is recommended on the input.
2 VSS power_in Ground pin, to which all voltages in the datasheet are referenced unless otherwise noted.
3 CE input Enable pin, with an enable turn-on voltage of 0.7 V min to 1.2 V max, and driving CE to 0 V shuts the regulator down.
4 NC unconnected No internal connection; the pin is left floating (悬空).
5 VOUT power_out Regulated output pin for fixed output voltages from 1.2 V to 5 V, which requires an output capacitor of at least 1 µF when ceramic and is rated for 300 mA typical output current.

Key specifications

Parameter Value
Manufacturer HXY MOSFET
Package SOT-23-5L
Category Power Management (PMIC)
Pins 5

Electrical characteristics

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

Parameter Symbol Min Typ Max Unit Conditions Page
输入电压 VIN 24 V ISS=5uA 3
输出电压 VOUT -1 1 % VIN=VOUT+1V, IOUT=10mA 3
使能开启电压 VCE 0.7 1.2 V VIN=2.2V, IOUT=1mA 3
线性调整度 △VOUT -10 10 mV VOUT+1V≤VIN≤24V, IOUT=5mA 3
负载调整度 △VOUT -50 50 mV VIN= VOUT+1V, 1mA≤IOUT≤100mA 3
最小压差 VDrop 130 150 170 mV IOUT=50mA, △VOUT=±1%*VOUT 3
最小压差 VDrop 230 250 270 mV IOUT150mA, △VOUT=±1%*VOUT 3
停机电流 ISHD -1 1 uA VIN=VOUT+1V, VCE=0V 3
温度系数 △VOUT/(△Ta*VOUT) -100 50 100 ppm/℃ VIN= VOUT+1V, IOUT=10mA, -40℃≤Ta≤85℃ 3
最大输入电源电压 VIN 32 V 2
最大输出电流 IOUT 420 mA 2
耗散功率 PD 250 mW 2
工作温度 TOPR -40 105 °C 2
存储温度 TSTG -40 125 °C 2
ESD 人体模型 -3000 3000 V H.B.M POS/NEG 3
最大结温（工作极限参数） TJ 150 °C 6
最大结温（正常工作建议） TJ 125 °C 6
输入电容 1 μF ceramic capacitor 6
输出电容 1 μF ceramic capacitor 6
结到环境热阻 SOT-23-5L θJA 500 °C/W SOT-23-5L package 6

CAD (KiCad official)

  • Symbol: LP2981A-50DBVR-HXY
  • Footprint: Package_TO_SOT_SMD:SOT-23-5
  • 3D model: SOT-23-5L (KiCad packages3D, STEP)
  • 3D model files: lp2981a-50dbvr-hxy-etched.step / lp2981a-50dbvr-hxy-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); lp2981a-50dbvr-hxy.step / lp2981a-50dbvr-hxy.glb are the bare package body.

Provenance

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

  • Datasheet: HXY MOSFET datasheet (8 pp, sha256 c5cf65589b92b1ca, retrieved 2026-10-28, 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: 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