component
TP4054S5
Public Unreviewedby Ray
TECH PUBLIC 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
markdownTP4054S5
TECH PUBLIC · Battery Management · SOT-23-5
TP4054S5 from TECH PUBLIC, 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 output. Pulled low by an internal N-channel MOSFET during charging; high-impedance when charging completes or when the part detects an under-voltage-lockout condition. Drives an external LED (typ. via 1 kΩ to VCC); with a 1 µF cap from BAT to GND the LED flashes rapidly when no battery is present. |
| 2 | GND | power_in | Device ground return. |
| 3 | BAT | power_out | Charge current output to the Li-ion cell. Sources up to 500 mA and regulates the final float voltage to 4.2 V. Auto-disconnects from VCC when the charger is disabled or in shutdown; internal protection allows ~1 mA to flow between GND and BAT when the battery is reverse-connected, protecting the ESD diode. |
| 4 | VCC | power_in | Positive supply input from the USB or adapter source. Operating range 4.3 V-7 V (absolute max 11 V); requires 0.1 µF-1 µF local decoupling. When VCC - VBAT drops below 30 mV the part enters sleep mode and BAT current falls below 2 µA. |
| 5 | PROG | input | Charge-current program, monitor, and shutdown pin. A 1% resistor to GND sets IBAT = (VPROG / RPROG) × 1000 (e.g. RPROG = 2 kΩ → 500 mA, 10 kΩ → 100 mA); pin sits at ~1 V in constant-current mode. Disconnecting RPROG lets an internal 2.5 µA source pull PROG above the 1.0 V manual-shutdown threshold, stopping charging and dropping ICC to ~40 µA. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | TECH PUBLIC |
| Package | SOT-23-5 |
| Category | PMIC |
| Pins | 5 |
Ordering variants
Same part, different packaging or reel option.
TP4054S5
CAD (KiCad official)
- Symbol:
TP4054S5 - 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: TECH PUBLIC datasheet (5 pp, sha256
76c5c9c8cfe49219, 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).