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TP4065-4.2V-SOT235
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TOPPOWER Nanjing Extension Microelectronics TP4065 4 2V SOT235 Battery Management, SOT-23-5. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+44@@ -0,0 +1,44 @@+# TP4065-4.2V-SOT235++**TOPPOWER Nanjing Extension Microelectronics TP4065 4 2V SOT235** · Battery Management · SOT-23-5++TP4065-4.2V-SOT235 from TOPPOWER Nanjing Extension Microelectronics TP4065 4 2V SOT235, 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 the internal switch while a charge cycle is active; high-impedance otherwise. Drives an indicator LED (typ VOL = 0.7 V at 3 mA sink). Outputs a pulse (0.5-3 s period with 10 uF on BAT) when no battery is connected. |+| 2 | GND | power_in | Device ground terminal. Return for VCC, BAT and PROG. |+| 3 | BAT | power_out | Battery connection pin. Sources the charge current to the Li-ion cell and senses the final float voltage (4.2 V) via an internal resistor divider. Recommended 10 uF bypass to GND. Absolute max current 700 mA; in sleep mode the divider is disconnected and BAT draws < 1 uA. |+| 4 | VCC | power_in | Positive input supply. Operating range 4.35 V to 8 V (UVLO rising threshold typ 3.8 V). Bypass with at least 10 uF to GND. When VCC drops within 90 mV of VBAT, the part enters low-power sleep. Absolute max -6.5 V to +8 V (reverse-input protected). |+| 5 | PROG | bidirectional | Charge-current program, charge-current monitor and shutdown pin. A 1% resistor RPROG to GND sets IBAT (e.g. 2.1 kΩ -> 500 mA per IBAT = 1050/RPROG for >0.2 A). In constant-current mode PROG regulates to ~1 V; leaving PROG open lets an internal 0.2 uA pull-up drive it above the 2.7 V shutdown threshold, entering shutdown (ICC ~ 75 uA, IBAT < 1 uA). Absolute max pin current 2 mA. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | TOPPOWER Nanjing Extension Microelectronics TP4065 4 2V SOT235 |+| Package | SOT-23-5 |+| Category | PMIC |+| Pins | 5 |++## Ordering variants++- `TP4065-4.2V-SOT235`++## CAD (KiCad official)++- Symbol: `TP4065-4.2V-SOT235`+- 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:** [TOPPOWER Nanjing Extension Microelectronics TP4065 4 2V SOT235 datasheet](docs/tp4065-4-2v-sot235-datasheet.pdf) (10 pp, sha256 `65cddc07dc66125d`, retrieved 2026-08-17, tier: manufacturer)+- **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/tp4065-4-2v-sot235-datasheet.pdf)
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