TP4336

@@ -0,0 +1,48 @@+# TP4336++**TPOWER** · Battery Management · ESOP-8L++TP4336 from TPOWER, in a ESOP-8L. 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 | VDD | power_in | Charger power input. Recommended operating range 4.5-5.5 V (absolute max 6.5 V). Overvoltage protection trips at ~6.15 V and recovers below 5.85 V. Typically fed from a 5 V USB source through a small series resistor with a 2.2 µF decoupling capacitor to GND. |+| 2 | LED1 | output | LED driver output. In 4-LED mode this is the first fuel-gauge LED (charge/discharge state, ~3-4 mA sink). In 2-LED mode this is the CHARGE indicator LED (red, ~3.3 mA). Blinks at 1 Hz while charging and 2 Hz on low-battery warning. |+| 3 | LED2 | output | LED driver output. In 4-LED mode this is the second fuel-gauge LED. In 2-LED mode this is the DISCHARGE indicator LED (blue, ~3.3 mA). Follows the fuel-gauge / low-battery blink patterns described in the LED state tables. |+| 4 | LED3 | output | LED driver output. In 4-LED mode this is the third fuel-gauge LED. In 2-LED mode this pin must be shorted to GND to select the 2-LED configuration. |+| 5 | SWT | bidirectional | Multi-function pushbutton input and flashlight LED driver. A >50 ms single click powers the boost output on and displays the fuel gauge; a double click within 500 ms turns the output off. A 2 s long press toggles the flashlight LED output (up to 60 mA sink at VBAT=4.2 V, disabled below the BAT undervoltage threshold). |+| 6 | BAT | power_out | Li-ion battery positive terminal. Sinks up to 1 A constant-current charge (10% trickle below 2.85 V) with 4.2 V float and 130 mV recharge hysteresis. Also sources current to the boost stage during discharge; UVLO releases boost above 3.1 V and terminates discharge below 2.8 V. Bypass with 10 µF close to the pin plus 10 µF near the inductor. |+| 7 | SW | power_out | Switching node of the synchronous boost converter (internal high-side and low-side power MOSFETs). Connects to an external 1.5 µH power inductor between BAT and SW. Operates at ~1 MHz with up to 90% duty cycle. |+| 8 | OUT | power_out | Synchronous boost output, regulated to 5.0 V at up to 1 A. Includes OVP at 5.25 V, OCP at 4.3 V with 8 ms delay, and short-circuit protection at 2.8 V with 500 µs delay (latched until load is removed or button pressed). Bypass with 2× 10 µF low-ESR ceramics close to the pin. |+| EP | GND | power_in | Exposed thermal pad, chip ground. Must be soldered to a large PCB ground plane for proper thermal performance and as the return for both the charger and boost stages. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | TPOWER |+| Package | ESOP-8L |+| Category | PMIC |+| Pins | 9 |++## Ordering variants++- `TP4336`++## CAD (KiCad official)++- Symbol: `TP4336`+- Footprint: `Package_SO:SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.41x3.3mm`+- 3D model: ESOP-8L (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [TPOWER datasheet](docs/tp4336-datasheet.pdf) (9 pp, sha256 `bc92374fdb8a95d6`, retrieved 2026-08-17, tier: lcsc)+- **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/tp4336-datasheet.pdf)

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