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SL4054
Public Made by Adomby adom
Slkor(SLKORMICRO Elec.) Battery Management ICs, SOT-23-5. 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
markdownSL4054
Slkor(SLKORMICRO Elec.) · Battery Management ICs · SOT-23-5
SL4054 from Slkor(SLKORMICRO Elec.), in a SOT-23-5. 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 | CHRG | output | Charge status indicator pin that indicates charge termination and input voltage status (open-drain style output, absolute max 7 V). |
| 2 | GND | power_in | Ground. |
| 3 | BAT | power_out | Charge current output to the battery; fixed 4.2V float voltage, up to 500 mA, absolute max 7 V. |
| 4 | VCC | power_in | Power supply input, 4.5 V to 5.5 V operating range, absolute max 7 V. |
| 5 | PROG | passive | Charge current programming and monitoring pin set by a resistor to ground; held at 0.1 V in precharge and 1 V in constant-current charging, absolute max VCC+0.3 V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Slkor(SLKORMICRO Elec.) |
| Package | SOT-23-5 |
| Category | Power Supply Chip |
| Pins | 5 |
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 supply voltage | VCC | 4.5 | 5 | 5.5 | V | 3 | |
| Input supply current, charge mode | ICC | 170 | 500 | µA | RPROG=10K | 3 | |
| Input supply current, standby mode | ICC | 70 | µA | Standby mode (charge terminated) | 3 | ||
| Input supply current, shutdown mode | ICC | 38 | 50 | µA | RPROG not connected, VCC<VBAT, VCC<VUV | 3 | |
| Regulated output (float) voltage | VFLOAT | 4.16 | 4.2 | 4.28 | V | IBAT=30 mA, ICHRG=5 mA | 3 |
| BAT pin current, current mode | IBAT | 90 | 110 | 130 | mA | RPROG=10k, current mode | 3 |
| BAT pin current, current mode | IBAT | 465 | 500 | 535 | mA | RPROG=2k, current mode | 3 |
| BAT pin current, standby mode | IBAT | -5 | 1 | 5 | µA | VBAT=4.2V, standby mode | 3 |
| BAT pin current, shutdown mode | IBAT | -5 | 0.5 | 5 | µA | RPROG not connected | 3 |
| BAT pin current, sleep mode | IBAT | -5 | 1 | 5 | µA | VCC=0V | 3 |
| Trickle charge current | ITRIKL | 15 | mA | VBAT<VTRIKL, RPROG=10k | 3 | ||
| Trickle charge threshold voltage | VTRIKL | 2.8 | 2.9 | 3 | V | RPROG=10k, VBAT rising | 3 |
| VCC undervoltage lockout threshold | VUV | 3.4 | V | 3 | |||
| VCC undervoltage lockout hysteresis | VUVHYS | 100 | mV | From VCC low to high | 3 | ||
| VCC-VBAT threshold, VCC rising | VASD | 100 | mV | VCC from low to high | 3 | ||
| VCC-VBAT threshold, VCC falling | VASD | 30 | mV | VCC from high to low | 3 | ||
| C/10 termination current threshold | ITERM | 0.1 | mA/mA | RPROG=10k | 3 | ||
| PROG pin voltage | VPROG | 0.9 | 1.03 | 1.1 | V | RPROG=10k, current mode | 3 |
| Recharge battery threshold voltage | ΔVRECHRG | 100 | mV | VFLOAT - VRECHRG | 3 | ||
| Thermal protection temperature | TLIM | 130 | °C | 3 | |||
| Soft-start time | tSS | 100 | µs | IBAT=0 to 1000V/RPROG | 4 | ||
| Recharge comparator filter time | tRECHRGE | 1 | ms | VBAT high to low | 4 | ||
| Termination comparator filter time | tTERM | 1000 | µs | IBAT falling below ICHG/10 | 4 | ||
| Input supply voltage | VCC | 7 | V | 2 | |||
| BAT voltage | VBAT | 7 | V | 2 | |||
| CHRG voltage | VCHRG | 7 | V | 2 | |||
| BAT current | IBAT | 500 | mA | 2 | |||
| PROG current | IPROG | 800 | µA | 2 | |||
| Maximum junction temperature | TJ | 110 | °C | 2 | |||
| Storage temperature | TS | -65 | 125 | °C | 2 | ||
| Soldering temperature | 260 | °C | not exceeding 10 seconds | 2 | |||
| Thermal resistance, junction to ambient | θJA | 250 | ℃/W | 2 |
CAD (KiCad official)
- Symbol:
SL4054 - Footprint:
Package_TO_SOT_SMD:SOT-23-5 - 3D model: SOT-23-5 (KiCad packages3D, STEP)
- 3D model files:
sl4054-etched.step/sl4054-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);sl4054.step/sl4054.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Slkor(SLKORMICRO Elec.) datasheet (5 pp, sha256
6755080dc437f6c6, 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).