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

Same part, different packaging or reel option.

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)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`tp4336.step`	193 KB	You want the bare part, or you mark your own boards.
`tp4336-etched.step`	1.3 MB	You want the part with `TP4336` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 326 faces against 63 in the bare model. It survives export, section views, and rendering in any CAD tool, and it drops straight into KiCad or Fusion with no extra setup.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

Datasheet: TPOWER datasheet (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