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LP2981A-33DBVR-HXY

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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.

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LP2981A-33DBVR-HXY

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

LP2981A-33DBVR-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 Power supply input; input voltage up to 24V (absolute max 32V), with a ceramic bypass capacitor of at least 1µF recommended.
2 VSS power_in Ground pin; all voltages are referenced to it.
3 CE input Chip enable input; enable turn-on voltage is 0.7V min to 1.2V max, and VCE=0V gives shutdown with ISHD of ±1µA max.
4 NC unconnected No connection, leave floating.
5 VOUT power_out Regulated output with ±1% accuracy, 300mA typical output current, and an output capacitor of at least 1µF required.

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
Output voltage accuracy VOUT -1 1 % VIN=VOUT+1V, IOUT=10mA; printed VOUT0.99 to VOUT1.01 3
Input voltage VIN 24 V ISS=5uA 3
Enable turn-on voltage VCE 0.7 1.2 V VIN=2.2V, IOUT=1mA 3
Line regulation ΔVOUT -10 10 mV VOUT+1V≤VIN≤24V, IOUT=5mA 3
Load regulation ΔVOUT -50 50 mV VIN=VOUT+1V, 1mA≤IOUT≤100mA 3
Dropout voltage VDrop 130 150 170 mV IOUT=50mA, ΔVOUT=±1%*VOUT 3
Dropout voltage VDrop 230 250 270 mV IOUT150mA, ΔVOUT=±1%*VOUT 3
Shutdown current ISHD -1 1 uA VIN=VOUT+1V, VCE=0V 3
Output voltage temperature coefficient ΔVOUT/(ΔTa*VOUT) -100 50 100 ppm/℃ VIN=VOUT+1V, IOUT=10mA, -40℃≤Ta≤85℃; typ printed ±50 3
Maximum input supply voltage VIN 32 V 2
Maximum output current IOUT 420 mA 2
Power dissipation PD 250 mW 2
Operating temperature TOPR -40 105 °C 2
Storage temperature TSTG -40 125 °C 2
ESD HBM -3000 3000 V H.B.M POS/NEG 3
Maximum junction temperature TJ(MAX) 150 °C normal operation recommended not above 125°C 6
Thermal resistance junction to ambient θJA 500 °C/W SOT-23-5L 6
Output current IOUT 300 mA VIN=VOUT+1V 3
Ripple rejection PSRR 75 dB VIN=VOUT+1V, IOUT=10mA, f=100Hz 3
Ripple rejection PSRR 60 dB VIN=VOUT+1V, IOUT=10mA, f=1kHz 3
Ripple rejection PSRR 45 dB VIN=VOUT+1V, IOUT=10mA, f=10kHz 3
Quiescent current ISS 1.5 uA VIN=VOUT+1V 3
Short-circuit current ISCP 85 mA VOUT=GND 3
Overcurrent protection IOCP 400 mA VIN=VCE=VOUT+1V 3

CAD (KiCad official)

  • Symbol: LP2981A-33DBVR-HXY
  • Footprint: Package_TO_SOT_SMD:SOT-23-5
  • 3D model: SOT-23-5L (KiCad packages3D, STEP)
  • 3D model files: lp2981a-33dbvr-hxy-etched.step / lp2981a-33dbvr-hxy-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); lp2981a-33dbvr-hxy.step / lp2981a-33dbvr-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 2026-10-26, 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-sonnet-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