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HT7544M3-1

Public Made by Adom

by adom

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

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HT7544M3-1

HGSEMI · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-23-3

HT7544M3-1 from HGSEMI, in a SOT-23-3. 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 GND power_in Ground pin for the HT75xx-1 LDO regulator (datasheet pin table: '地', ground).
2 VIN power_in Input pin; the absolute maximum supply voltage is 30 V (range -0.3 to +30 V), and the datasheet requires VIN to be at least VOUT+2V for specified output accuracy.
3 VOUT power_out Regulated output pin for fixed output voltages from 2.5 V to 5.0 V, rated for up to 100 mA; the output must be bypassed to ground with a capacitor greater than 2.2 uF.

Key specifications

Parameter Value
Manufacturer HGSEMI
Package SOT-23-3
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
Output current IOUT 70 100 mA VIN=VOUT+2V 5
Output voltage VOUT 4.312 4.4 4.488 V VIN=VOUT+2V, IOUT=10mA 5
Load regulation ΔVOUT 25 60 mV VIN=VOUT+2V, 1mA ≤ IOUT ≤ 50mA 5
Dropout voltage VDIF 2 4 mV IOUT=1mA, ΔVo=2% 5
Quiescent current ISS 2 3 uA No load 5
Line regulation 0.2 %/V Vo+1V≤VIN≤30V, IOUT=1mA 5
Output voltage temperature coefficient 100 ppm/℃ IOUT=10mA, -40℃<Ta<85℃ 5
Input voltage VIN 30 V 5
Supply voltage VIN -0.3 30 V 3
Operating ambient temperature -40 85 ℃ 3
Storage temperature range -45 140 ℃ 3
Pin soldering temperature 260 ℃ 10s 3
Output capacitor 2.2 uF Output to GND capacitor, per usage notes 6

CAD (KiCad official)

  • Symbol: HT7544M3-1
  • Footprint: Package_TO_SOT_SMD:SOT-23-3
  • 3D model: SOT-23-3 (KiCad packages3D, STEP)
  • 3D model files: ht7544m3-1-etched.step / ht7544m3-1-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ht7544m3-1.step / ht7544m3-1.glb are the bare package body.

Provenance

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

  • Datasheet: HGSEMI datasheet (10 pp, sha256 e61e803b03a47d78, retrieved 2026-10-17, 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