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SL4057
Public Made by Adomby adom
Slkor SLKORMICRO Elec Battery Management, SOT-23-6. 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
markdownSL4057
Slkor SLKORMICRO Elec · Battery Management · SOT-23-6
SL4057 from Slkor SLKORMICRO Elec, in a SOT-23-6. 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 | Open-drain charge-status output that is pulled low while charging, is high-impedance in other states, and flashes at about 20 Hz when no battery is connected (with a 1 µF capacitor on BAT). |
| 2 | GND | power_in | Ground pin for the device; the PROG charge-current resistor is connected between PROG and this pin. |
| 3 | BAT | bidirectional | Battery connection that delivers the charge current (BAT current rated at 500 mA) and regulates the float voltage at 4.24 V ±1%, with an absolute maximum voltage of 6.5 V. |
| 4 | VCC | power_in | Input supply pin with an operating range of 4.0 V to 6.5 V; the charger stays in shutdown until VCC rises above the UVLO threshold of about 3.8 V (200 mV typical hysteresis). |
| 5 | STDBY | output | Open-drain charge-complete output that is pulled low when charging terminates and is high-impedance in other states, with an absolute maximum voltage of 8 V. |
| 6 | PROG | passive | Charge-current programming pin: a resistor to GND sets the constant charge current (for example 2 kΩ gives 500 mA and 10 kΩ gives about 100 mA), with 1.0 V on PROG in constant-current mode and an absolute maximum of 6.5 V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Slkor SLKORMICRO Elec |
| Package | SOT-23-6 |
| Category | Power Management (PMIC) |
| 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 supply voltage | VCC | 4 | 6.5 | V | 5 | ||
| Input supply current, charge mode | ICC | 240 | 500 | uA | 充电模式(RPROG=10K) | 5 | |
| Input supply current, standby (charge terminated) | ICC | 45 | 90 | uA | 待机模式（充电终止） | 5 | |
| Input supply current, shutdown mode | ICC | 25 | 50 | uA | 停机模式(RPROG未连接，VCC＜VBAT,VCC＜VUVLO) | 5 | |
| Output float voltage | VFLOAT | 4.198 | 4.24 | 4.282 | V | 0C≤T≤85C，IBAT=40mA | 5 |
| BAT charge current, constant current mode | IBAT | 93 | 100 | 107 | mA | 恒流模式，RPROG=10K | 5 |
| BAT charge current, constant current mode | IBAT | 465 | 500 | 535 | mA | 恒流模式，RPROG=2K | 5 |
| BAT standby current | IBAT | 0 | -2.5 | -6 | uA | 待机模式，VBAT=4.2V | 5 |
| BAT shutdown current | IBAT | 1 | 2 | uA | 停机模式 | 5 | |
| Battery reverse-polarity mode current | 0.7 | mA | 电池反接模式，VBAT=-4V | 5 | |||
| Sleep mode current | 0 | 1 | uA | 睡眠模式，VCC=0V | 5 | ||
| Trickle charge current | ITRIKL | 40 | 50 | 60 | mA | VBAT＜VTRIKL, RPROG=2K | 5 |
| Trickle charge threshold voltage, VBAT rising | VTRIKL | 2.7 | 2.9 | 3.1 | V | VBAT上升 | 5 |
| Trickle charge hysteresis voltage, VBAT falling | VTRHYS | 60 | 80 | 100 | mV | VBAT下降 | 5 |
| VCC undervoltage lockout voltage, VCC rising | VUVLO | 3.6 | 3.8 | 4 | V | VCC上升 | 5 |
| VCC undervoltage lockout hysteresis, VCC falling | VUVHYS | 150 | 200 | 300 | mV | VCC下降 | 5 |
| Manual shutdown threshold voltage, VPROG rising | VMSD | 1.15 | 1.21 | 1.3 | V | VPROG上升 | 5 |
| Manual shutdown threshold voltage, VPROG falling | 0.9 | 1 | 1.1 | V | VPROG下降 | 5 | |
| VCC-VBAT lockout voltage, VCC rising | VASD | 70 | 100 | 140 | mV | VCC上升 | 5 |
| VCC-VBAT lockout voltage, VCC falling | 5 | 30 | 50 | mV | VCC下降 | 5 | |
| C/10 termination current threshold (ratio of termination to constant charge current) | ITERM | 0.085 | 0.1 | 0.115 | mA/mA | RPROG=10K | 5 |
| PROG pin voltage | VPROG | 0.93 | 1 | 1.07 | V | 恒流模式，RPROG=10K | 5 |
| CHRG output low voltage | VCHRG | 0.35 | 0.6 | V | ICHRG=5mA | 5 | |
| STDBY output low voltage | VSTDBY | 0.35 | 0.6 | V | ISTDBY=5mA | 5 | |
| Recharge threshold voltage | VRECHG | 100 | 200 | mV | VFLOAT-VRECHG | 5 | |
| Recharge delay time | tRECHG | 0.8 | 1.8 | 4 | ms | VBAT由高到低 | 5 |
| Charge termination delay time | tTERM | 0.63 | 1.4 | 3 | ms | IBAT降至ICHG/10以下 | 5 |
| PROG pin pull-up current | IPROG | 2 | uA | 5 | |||
| VCC input voltage (absolute maximum) | VCC | -0.3 | 6.5 | V | 3 | ||
| PROG pin voltage (absolute maximum) | -0.3 | 6.5 | V | 3 | |||
| BAT pin voltage (absolute maximum) | -0.3 | 6.5 | V | 3 | |||
| CHRG pin voltage (absolute maximum) | -0.3 | 8 | V | 3 | |||
| STDBY pin voltage (absolute maximum) | -0.3 | 8 | V | 3 | |||
| BAT pin current (absolute maximum) | 500 | mA | 3 | ||||
| PROG pin current (absolute maximum) | 800 | uA | 3 | ||||
| Maximum power dissipation | 400 | mW | 3 | ||||
| Maximum power dissipation with added PCB heat sinking (reference only) | 800 | mW | 增加PCB散热 (note 1: reference only) | 3 | |||
| Operating ambient temperature | -40 | 85 | C | 3 | |||
| Storage temperature | Tstg | -65 | 125 | C | 3 | ||
| Human body model ESD level | 4000 | V | 3 | ||||
| Machine model ESD level | 400 | V | 3 | ||||
| Latch-up level | 400 | mA | 3 |
CAD (KiCad official)
- Symbol:
SL4057 - Footprint:
Package_TO_SOT_SMD:SOT-23-6 - 3D model: SOT-23-6 (KiCad packages3D, STEP)
- 3D model files:
sl4057-etched.step/sl4057-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);sl4057.step/sl4057.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Slkor SLKORMICRO Elec datasheet (8 pp, sha256
903b652d222876ff, 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).