component
TP4054-MS
Public Unreviewedby Ray
MSKSEMI Battery Management, SOT-23-5. Datasheet-verified pinout, 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
markdownTP4054-MS
MSKSEMI · Battery Management · SOT-23-5
TP4054-MS from MSKSEMI, in a SOT-23-5. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | CHRG | output | Open-drain charge status indicator. An internal N-channel MOSFET pulls CHRG low during charging (VOL ~0.35 V typ at ICHRG = 5 mA) and is high impedance when charging completes or when the part is in undervoltage-lockout / shutdown. A capacitor (~1 uF) to ground allows detection of a missing battery via a ~1 Hz LED flash. |
| 2 | GND | power_in | Device ground / return for VCC and BAT currents. |
| 3 | BAT | power_out | Charge current output to the single-cell Li-ion battery. Regulates the float voltage to 4.24 V (typ) and delivers up to 500 mA of programmed charge current. Includes reverse-battery ESD protection; a ~0.7 mA current flows between GND and BAT when the battery is connected in reverse. |
| 4 | VCC | power_in | Positive input supply from a USB port or wall adapter, 4.25 V to 6.5 V. Requires at least 1 uF bypass capacitance to GND. When (VCC - VBAT) drops below 30 mV, the part enters standby and BAT current falls below 2 uA. |
| 5 | PROG | bidirectional | Charge-current program, charge-current monitor, and shutdown pin. A resistor RPROG from PROG to GND sets IBAT = (VPROG / RPROG) x 1000 (VPROG ~1.0 V in constant-current mode, e.g. RPROG = 2 k -> ~500 mA, RPROG = 10 k -> ~100 mA). PROG can also monitor charge current or shut the charger down: pulling PROG above ~1.21 V via a 2 uA source disables charging (ICC drops to ~25 uA); driving PROG above ~2.4 V yields ~1.5 mA of high current. Reconnecting PROG to GND through RPROG restores normal operation. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | MSKSEMI |
| Package | SOT-23-5 |
| Category | PMIC |
| Pins | 5 |
CAD (KiCad official)
- Symbol:
TP4054-MS - Footprint:
Package_TO_SOT_SMD:SOT-23-5 - 3D model: SOT-23-5 (KiCad packages3D, STEP)
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: MSKSEMI datasheet (11 pp, sha256
7a038fea37ca8cbb, retrieved 2026-08-17, 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:
ds2sf(Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate. - CAD: KiCad official libraries (CC-BY-SA 4.0).