TP4054S5

@@ -0,0 +1,45 @@+# TP4054S5++**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++- `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](docs/tp4054s5-datasheet.pdf) (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).++[Datasheet PDF](docs/tp4054s5-datasheet.pdf)

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