component
SLM6401
Public Made by Adomby adom
SOLA IC Battery Management, SOT-23-6L. 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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Contents
README
markdownSLM6401
SOLA IC · Battery Management · SOT-23-6L
SLM6401 from SOLA IC, in a SOT-23-6L. 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 | NCHRG | output | Open-drain charge status indicator that is pulled low by an internal switch while the battery is charging and is otherwise high impedance; its low level is 0.6V max at 5mA. |
| 2 | GND | power_in | Power ground for the device. |
| 3 | BAT | power_out | Battery connection that delivers the charge current and the 4.2V limit voltage to the battery, with BAT leakage below 2uA when the chip is disabled or in sleep mode. |
| 4 | VCC | power_in | Input supply pin that powers the internal circuits and operates from 4.0 to 6.0V, with the device entering low-power shutdown when the VCC-to-BAT difference is below 30mV. |
| 5 | NSTDBY | output | Open-drain battery-full indicator that is pulled low when the battery is fully charged and is otherwise high impedance; its low level is 0.6V max at 5mA. |
| 6 | PROG | passive | Charge current programming and monitoring pin, where a resistor to GND sets IBAT = VPROG / RPROG x 1200, with the voltage limited to 0.2V in precharge and fixed at 1V in constant-current charging. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | SOLA IC |
| Package | SOT-23-6L |
| 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 | 5 | 6 | V | 4 | |
| Input supply current (standby mode, charge termination) | ICC | 102 | 200 | uA | Standby mode (charge termination) | 4 | |
| Input supply current (shutdown) | ICC | 60 | 100 | uA | RPROG not connected, VCC<VBAT or VCC<VUV | 4 | |
| Stable output (floating charge) voltage | VFLOAT | 4.158 | 4.2 | 4.242 | V | 4 | |
| BAT pin current (current mode) | IBAT | 450 | 500 | 550 | mA | RPROG=2.4K, Current mode; test condition VBAT=4.0V | 4 |
| BAT pin current (current mode) | IBAT | 90 | 100 | 110 | mA | RPROG=12K, Current mode; test condition VBAT=4.0V | 4 |
| BAT pin current (standby mode) | IBAT | 0 | 2.5 | 5 | uA | Standby mode, VBAT=4.3V | 4 |
| BAT pin current (sleep mode) | IBAT | 5 | uA | Sleep mode, Vcc=0V | 4 | ||
| Trickle charging current | ITRIKL | 75 | 100 | 125 | mA | VBAT<VTRIKL, RPROG=2.4K | 4 |
| Trickle charge threshold voltage | VTRIKL | 2.4 | 2.6 | 2.8 | V | RPROG=2.4K, VBAT rise | 4 |
| Trickle charging hysteresis voltage | VTRHYS | 70 | mV | RPROG=2.4K | 4 | ||
| VCC undervoltage lockout threshold | VUV | 3.6 | 3.8 | 4 | V | From VCC low to high | 4 |
| VCC undervoltage lockout hysteresis | VUVHYS | 150 | 250 | 350 | mV | 4 | |
| VCC over-voltage protection threshold | VOV | 6.1 | 6.3 | 6.5 | V | From VCC low to high | 4 |
| VCC over-voltage protection hysteresis | VOVHYS | 80 | 130 | 180 | mV | 4 | |
| Pull current on the PROG pin | IPROG | 1 | uA | 4 | |||
| PROG pin voltage | VPROG | 0.9 | 1 | 1.1 | V | RPROG=1.2K, current mode | 4 |
| VCC-VBAT blocking threshold voltage | VASD | 60 | 150 | 240 | mV | VCC from low to high | 4 |
| VCC-VBAT blocking threshold voltage | VASD | 10 | 60 | 100 | mV | VCC from high to low | 4 |
| C/10 termination current threshold | ITERM | 40 | 50 | 60 | mA | RPROG=2.4K | 4 |
| C/10 termination current threshold | ITERM | 90 | 100 | 110 | mA | RPROG=1.2K | 4 |
| NCHRG pin output low level | VNCHRG | 0.3 | 0.6 | V | INCHRG=5mA | 5 | |
| NSTDBY pin output low level | VNSTDBY | 0.3 | 0.6 | V | INPG=5mA | 5 | |
| Recharge battery threshold voltage | ΔVRECHRG | 100 | 170 | 220 | mV | 5 | |
| Junction temperature in limited temperature mode | TLIM | 145 | °C | 5 | |||
| Power FET ON resistor (between VCC and BAT) | RON | 350 | mΩ | 5 | |||
| Soft start time | tSS | 20 | us | IBAT=0 to IBAT=1200/RPROG | 5 | ||
| Recharge comparator filter time | tRECHRG | 0.8 | 1.8 | 4 | ms | VBAT high to low | 5 |
| Terminate comparator filter time | tTERM | 0.8 | 1.8 | 4 | ms | IBAT falls below ICHRG/10 | 5 |
| Maximum withstand voltage (input) | 28 | V | 1 |
Materials and finish
As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).
| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| contacts | copper | dissipation path is from the chip to the pin, then to the pad, and then to the copper of the PCB. As a heat sink, the PCB should be as wide as | 8 |
CAD (KiCad official)
- Symbol:
SLM6401 - Footprint:
Package_TO_SOT_SMD:SOT-23-6 - 3D model: SOT-23-6L (KiCad packages3D, STEP)
- 3D model files:
slm6401-etched.step/slm6401-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);slm6401.step/slm6401.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: SOLA IC datasheet (9 pp, sha256
228fb6960a98ee5f, retrieved 2026-10-18, tier: lcsc) - 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).