component
HT7544
Public Made by Adomby adom
QNHCHIP Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-23. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
Generated by kicad-footprint-generator · KiCad file format 20260206
| Name | Last updated |
|---|---|
| docs | 16d ago |
| viewers | 16d ago |
| ht7544-etched.glb | 16d ago |
| ht7544-etched.step | 16d ago |
| ht7544-hero.glb | 16d ago |
| ht7544-hero.overlay.json | 16d ago |
| ht7544.glb | 16d ago |
| ht7544.kicad_mod | 16d ago |
| ht7544.kicad_sym | 16d ago |
| ht7544.lbr | 16d ago |
| ht7544.step | 16d ago |
| package.json | 16d ago |
| page.json | 16d ago |
| README.md | 16d ago |
HT7544
QNHCHIP · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-23
HT7544 from QNHCHIP, in a SOT-23. 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 reference for the regulator; connect the input and output capacitors close to the GND, VIN and VOUT pins. |
| 2 | VOUT | power_out | Regulated 4.4V output (HT7544) with at least 2.2µF output capacitor to ground required, 100mA min output current at VIN=VOUT+2.0V. |
| 3 | VIN | power_in | Supply input, withstands up to 24V (absolute maximum -0.3 to +24V). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | QNHCHIP |
| Package | SOT-23 |
| 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 voltage | VOUT | 4.312 | 4.5 | 4.488 | V | VIN=VOUT+2.0V，IOUT=10mA | 9 |
| Output current | IOUT | 100 | 150 | mA | VIN=VOUT+2.0V | 9 | |
| Load regulation | ΔVOUT | 5 | 60 | mV | VIN=VOUT+2.0V，1mA≤IOUT≤70mA | 9 | |
| Dropout voltage | VDIF | 25 | 55 | mV | IOUT=1mA，ΔVOUT=2% | 9 | |
| Quiescent current | ISS | 1.5 | 3 | μA | 无负载 | 9 | |
| Line regulation | ΔVOUT/(VOUT*ΔVIN) | 0.2 | %/V | VOUT+1.0V≤VIN≤24V，IOUT=1mA | 9 | ||
| Input voltage | VIN | 24 | V | 9 | |||
| Input voltage (absolute maximum rating) | VIN | -0.3 | 24 | V | 4 | ||
| Storage temperature | TSTG | -50 | 125 | ℃ | 4 | ||
| Operating temperature | TA | -40 | 85 | ℃ | 4 | ||
| Temperature coefficient | ΔVOUT/(ΔTA*VOUT) | 0 | ppm/℃ | VIN=VOUT+2.0V，IOUT=10mA，-40℃≤TA≤85℃ | 9 | ||
| Thermal resistance, junction-to-ambient (SOT23-3) | θJA | 500 | ℃/W | SOT23-3 package | 4 | ||
| Power dissipation (SOT23-3) | PD | 200 | mW | SOT23-3 package | 4 |
CAD (KiCad official)
- Symbol:
HT7544 - Footprint:
Package_TO_SOT_SMD:SOT-23 - 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files:
ht7544-etched.step/ht7544-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ht7544.step/ht7544.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: QNHCHIP datasheet (13 pp, sha256
78e25abc675b4c05, 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).