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TP4110

Public Unreviewed

by Ray

TPOWER Battery Management, SOP-16. Datasheet-verified pinout, KiCad symbol/footprint/3D.

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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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Contents

README

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TP4110

TPOWER · Battery Management · SOP-16

TP4110 from TPOWER, in a SOP-16. 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 BAT power_in Li-ion battery positive terminal. Charge target voltage 4.2V (or 4.35V variant); start threshold 3.2V; discharge cut-off 2.9V; standby current 50uA typical.
2 SW power_out Boost converter power NMOS drain. Connects to boost inductor and Schottky diode (e.g., SS34). Switching frequency 500kHz; internal NMOS Rds(on) ~0.1Ω.
3 GND power_in Chip ground reference. Should be tied to a large ground plane close to the die.
4 FAN- output Fan negative-side output (low-side switch). Rated absolute maximum voltage 14V, same as SW node.
5 FB input Boost output voltage feedback pin. Regulated to 1V during boost operation; output voltage is set by external divider (VOUT = (Rx+R4)/Rx).
6 V3 output Open-drain output. In speed-3 mode V3 is pulled low, and the third-gear output voltage is set by the resistor tied to V3.
7 V2 output Open-drain output. In speed-2 mode V2 is pulled low, and the second-gear output voltage is set by the resistor tied to V2.
8 V1 output Open-drain output. In speed-1 mode V1 is pulled low, and the first-gear output voltage is set by the resistor tied to V1.
9 KEY1 bidirectional Main pushbutton input, also drives a flashlight LED (max ~40mA). Short press cycles fan speed; long press (2s) toggles flashlight. Cycling behavior depends on MODE pin.
10 KEY2 input Fan-off pushbutton input to GND. A short press turns the fan output off.
11 MODE input Speed-cycle mode select. Floating = mode 1 (1→2→3→1); tied to GND = mode 2 (1→2→3→OFF→1).
12 LED4 output Charge status indicator LED driver. Blinks at 1Hz while charging from VIN; solid on when battery is fully charged. Typical drive current 3mA.
13 LED3 output Third-gear (speed 3) indicator LED driver. Typical drive current 3mA.
14 LED2 output Second-gear (speed 2) indicator LED driver. Typical drive current 3mA.
15 LED1 output First-gear (speed 1) indicator LED driver. Typical drive current 3mA.
16 VIN power_in External 5V USB charging input. Recommended range 4.3V-5.5V; charges the Li-ion battery at 0.8A constant current.

Key specifications

Parameter Value
Manufacturer TPOWER
Package SOP-16
Category PMIC
Pins 16

CAD (KiCad official)

  • Symbol: TP4110
  • Footprint: Package_SO:SOIC-16_3.9x9.9mm_P1.27mm
  • 3D model: SOP-16 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
tp4110.step 217 KB You want the bare part, or you mark your own boards.
tp4110-etched.step 1.6 MB You want the part with TP4110 already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 427 faces against 267 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 (6 pp, sha256 c4d153850af3b222, 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