component
HT7544M3-1
Public Made by Adomby 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.
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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README
markdownHT7544M3-1
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.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ht7544m3-1.step/ht7544m3-1.glbare 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, primaryclaude-haiku-5-5(text), consensusclaude-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).