component
SL7544-8
Public Made by Adomby adom
Slkor(SLKORMICRO Elec.) Linear Voltage Regulators (LDO), SOT-89-3. 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
markdownSL7544-8
Slkor(SLKORMICRO Elec.) · Linear Voltage Regulators (LDO) · SOT-89-3
SL7544-8 from Slkor(SLKORMICRO Elec.), in a SOT-89-3. 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 of the SL7544 4.4V regulator. |
| 2 | VIN | power_in | Input supply pin, absolute maximum supply voltage -0.3V to +36V, with a 10uF polarized capacitor recommended close to the pin. |
| 3 | VOUT | power_out | Regulated 4.4V output (±2%) up to 100mA, requiring a capacitor of more than 2.2uF to ground (10uF recommended) close to the pin. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Slkor(SLKORMICRO Elec.) |
| Package | SOT-89-3 |
| Category | Power Management ICs |
| 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 | 4.4 | 4.488 | V | VIN=VOUT+2V, IOUT=10mA, Ta=25℃ | 4 |
| Output current | IOUT | 70 | 100 | mA | VIN=VOUT+2V, Ta=25℃ | 4 | |
| Load regulation | ΔVOUT | 25 | 60 | mV | VIN=VOUT+2V, 1mA≤IOUT≤50mA | 4 | |
| Dropout voltage | VDIF | 2 | 4 | mV | IOUT=1mA, ΔVo=2% | 4 | |
| Quiescent current | ISS | 2 | 3 | uA | No load | 4 | |
| Line regulation | 0.2 | %/V | Vo+1V≤VIN≤36V, IOUT=1mA | 4 | |||
| Input voltage | VIN | 36 | V | 4 | |||
| Supply voltage | -0.3 | 36 | V | 2 | |||
| Operating ambient temperature | 40 | 85 | ℃ | printed without minus sign | 2 | ||
| Storage temperature | 45 | 140 | ℃ | printed without minus sign | 2 | ||
| Thermal resistance, junction to ambient | θJA | 200 | ℃/W | SOT89, no airflow, no heat sink | 2 | ||
| Power dissipation | PD | 0.5 | W | SOT89, Ta=25℃ | 2 | ||
| Temperature coefficient | 100 | ppm/℃ | IOUT=10mA, -40℃<Ta<85℃ | 4 |
CAD (KiCad official)
- Symbol:
SL7544-8 - Footprint:
Package_TO_SOT_SMD:SOT-89-3 - 3D model: SOT-89-3 (KiCad packages3D, STEP)
- 3D model files:
sl7544-8-etched.step/sl7544-8-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);sl7544-8.step/sl7544-8.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Slkor(SLKORMICRO Elec.) datasheet (8 pp, sha256
1f348ab8fc56c784, retrieved 2026-10-22, 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-sonnet-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).