component
SL4275-G
Public Made by Adomby adom
Slkor(SLKORMICRO Elec.) Linear Voltage Regulators (LDO), TO-263-5. 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
markdownSL4275-G
Slkor(SLKORMICRO Elec.) · Linear Voltage Regulators (LDO) · TO-263-5
SL4275-G from Slkor(SLKORMICRO Elec.), in a TO-263-5. 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 | I | power_in | Input supply (operating 5.5V to 42V, absolute max 42V); bypass with a ceramic capacitor to ground close to the IC. |
| 2 | RQ | output | Open-drain reset output that needs an external pull-up resistor and is pulled low when VQ falls below the reset threshold VRT (4.65V typ); may be left floating if unused. |
| 3 | GND | power_in | Ground, internally connected to the heat sink tab. |
| 4 | D | passive | Reset delay pin; connect a capacitor to ground to set the reset delay time (trd = CD*1.8V/6uA); may be left floating if unused, giving about 8us. |
| 5 | Q | power_out | 5V regulated output (4.9V to 5.1V, up to 450mA) requiring a capacitor to ground with CQ ≥ 22uF and ESR < 5Ω at 10kHz. |
| 6 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Slkor(SLKORMICRO Elec.) |
| Package | TO-263-5 |
| Category | Power Management |
| Pins | 6 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Input voltage | VI | -0.3 | 42 | V | Tj=-40 to 150°C | 4 | |
| Output voltage | VQ | -0.3 | 12 | V | 4 | ||
| Junction temperature | Tj | -40 | 150 | °C | 结温 | 4 | |
| Storage temperature | Tstg | -40 | 150 | °C | 存储温度 | 4 | |
| Thermal resistance junction-ambient | Rthj-a | 50 | 90 | K/W | 仅管脚 | 4 | |
| ESD HBM | VESD-HBM | -2000 | 2000 | V | 人体模型 JESD22-A114 | 4 | |
| ESD CDM | VESD-CDM | -1000 | 1000 | V | 充电设备模型 JESD22-C101E | 4 | |
| Operating voltage | VI | 5.5 | 13.5 | 42 | V | VI=13.5V; -40°C≤Tj≤150°C | 5 |
| Output voltage | VQ | 4.9 | 5 | 5.1 | V | IQ<450m;VI<42V | 5 |
| Output current limit | IQ | 450 | 800 | mA | VI=13.5V | 5 | |
| Quiescent current 1 | Iq1 | 80 | 100 | uA | IQ = 5mA | 5 | |
| Quiescent current 2 | Iq2 | 0.5 | mA | IQ = 400mA | 5 | ||
| Dropout voltage | Vdr | 0.3 | 0.5 | V | IQ = 300mA | 5 | |
| Load regulation | ΔVQLo | 150 | mV | 5mA<IQ<450mA | 5 | ||
| Line regulation | ΔVQLi | 2 | 10 | mV | 8V<VI<40V,IQ=5mA | 5 | |
| Power supply rejection ratio | PSRR | 70 | dB | [email protected] | 5 | ||
| Output capacitance | CQ | 1 | uF | ESR≤5Ω@10KHZ | 5 | ||
| Reset threshold | VRT | 4.5 | 4.65 | 4.8 | V | 输出电压跌落 | 5 |
| Reset hysteresis | Vhys | 0.2 | V | 5 | |||
| Reset response time | trr | 2 | us | 5 | |||
| Reset output low voltage | VRQL | 0.4 | V | Rext≥5KΩ ;VQ<VRT | 5 | ||
| Reset output leakage current | IRQ | 0 | 1 | uA | VRQ=5V | 5 | |
| Upper timing threshold | VDT | 1.8 | V | 5 | |||
| Lower timing threshold | VDL | 0.2 | 0.4 | 0.6 | V | 5 | |
| Delay capacitor charge current | ICharge | 3 | 6 | 9 | uA | VD=0V | 5 |
| Reset delay time | trd | 10 | 15 | 20 | ms | CD=47nF | 5 |
| Reset delay time, no capacitor | trd | 8 | us | 引脚无电容 | 5 | ||
| Thermal resistance junction-case | RthJC | 3.6 | K/W | 测量散热基座 | 4 | ||
| Thermal resistance junction-ambient | RthJA | 22 | K/W | 4 | |||
| Thermal resistance junction-ambient, pins only | RthJA | 74 | K/W | 仅引脚 | 4 | ||
| Thermal resistance junction-ambient, 300 mm2 heatsink | RthJA | 42 | K/W | 300 mm2散热片 | 4 | ||
| Thermal resistance junction-ambient, 600 mm2 heatsink | RthJA | 34 | K/W | 600 mm2散热片 | 4 |
CAD (KiCad official)
- Symbol:
SL4275-G - Footprint:
Package_TO_SOT_SMD:TO-263-5_TabPin6 - 3D model: TO-263-5 (KiCad packages3D, STEP)
- 3D model files:
sl4275-g-etched.step/sl4275-g-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);sl4275-g.step/sl4275-g.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Slkor(SLKORMICRO Elec.) datasheet (10 pp, sha256
ef8953d0e278b5c4, retrieved 2026-10-27, 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).