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TP4101-42-TSOT236

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by Ray

TOPPOWER Nanjing Extension Microelectronics Battery Management, TSOT-23-6. Datasheet-verified pinout, KiCad symbol/footprint/3D.

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Contents

README

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TP4101-42-TSOT236

TOPPOWER Nanjing Extension Microelectronics · Battery Management · TSOT-23-6

TP4101-42-TSOT236 from TOPPOWER Nanjing Extension Microelectronics, in a TSOT-23-6. 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 PROG bidirectional Charge current program, current-monitor and shutdown pin. A 1% resistor R_PROG from PROG to GND sets I_BAT (R_PROG = 850/I_BAT for I_BAT >= 0.4A, or 650/I_BAT for I_BAT < 0.4A). Pin sits at ~1.0V in constant-current mode; leaving R_PROG open lets a 2μA internal pull-up drive PROG above the 2.7V shutdown threshold to disable charging.
2 GND power_in Device ground reference. Return for the input bypass capacitor and for R_PROG.
3 CHRG output Open-drain charge-status indicator. Pulled low by an internal switch while charging is in progress (typ V_OL = 0.3V at 5mA); goes high-impedance when charging is not active (leakage ~0-1μA at 5V).
4 BAT power_out Charge-current output to the positive terminal of the Li-ion cell. Regulates the final float voltage to 4.2V ±1% via an internal precision divider (divider disabled in shutdown). Absolute rating -4.2V to 8V; continuous BAT short-circuit tolerated; pin current up to 1200mA.
5 BP power_out Battery-side load output. In discharge mode the cell feeds the system load through BP via an internal ~100mΩ FET, which opens on undervoltage (V_OD ≈ 2.7V), overcurrent (I_OCP ≈ 1.55A at V_BAT=3.7V), overcharge, or over-temperature to protect the cell.
6 VIN power_in Positive input supply (VCC) to the charger, 4.35V to 8V (absolute max -5V to 8V; features 0.3Ω first-stage 5V reverse-connection protection). Bypass with at least 1μF. When VCC drops below V_BAT by ~30mV the device stops charging and the cell reverts to discharge mode.

Key specifications

Parameter Value
Manufacturer TOPPOWER Nanjing Extension Microelectronics
Package TSOT-23-6
Category PMIC
Pins 6

Ordering variants

Same part, different packaging or reel option.

  • TP4101-42-TSOT236
  • TP4100-42-DFN338
  • TP4102-42-DFN228

CAD (KiCad official)

  • Symbol: TP4101-42-TSOT236
  • Footprint: Package_TO_SOT_SMD:SOT-23-6
  • 3D model: TSOT-23-6 (KiCad packages3D, STEP)

Provenance

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

  • Datasheet: TOPPOWER Nanjing Extension Microelectronics datasheet (6 pp, sha256 07db96b6c87c64b4, 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