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FM2119L

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by Ray

Shenzhen Fuman Battery Management, SOT-23-6. Datasheet-verified pinout, KiCad symbol/footprint/3D.

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Contents

README

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FM2119L

Shenzhen Fuman · Battery Management · SOT-23-6

FM2119L from Shenzhen Fuman, in a SOT-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 DOUT output Discharge control output. Drives the gate of the external discharge-control N-MOSFET Q2. High = Q2 on (discharge allowed); pulled to VSS on over-discharge, over-current, or short-circuit protection. Output high level VDD-0.2V typ at IDOUT=10µA (VDD=3.9V); output low 0.2V typ at VDD=2.0V.
2 VM input Charge/discharge current sense input. Connects through a ~1kΩ current-limit resistor (R1 in the app circuit is 1kΩ; R2 to P- is 2.2kΩ) to the source of external charge-control N-MOSFET Q1, sensing the voltage drop across Q1+Q2. Also used for charger detection (VCHG typ -0.5V) and short-circuit detection (VSHORT 0.82-1.75V).
3 COUT output Charge control output. Drives the gate of the external charge-control N-MOSFET Q1. High = Q1 on (charge allowed); switched to VM level on over-voltage charge protection. Internal ~4MΩ pull-down when low; output high VDD-0.2V typ at ICOUT=10µA (VDD=3.9V).
4 NC unconnected No connect. Leave floating (悬空).
5 VDD power_in Positive supply input, connected to the battery positive terminal (through R1=1kΩ). Absolute max -0.3V to +10V; operating 1.5V to 10V. Decouple with a 0.1µF ceramic capacitor to VSS. Typical supply current IDD = 2.5µA at VDD=3.9V.
6 VSS power_in Ground / negative supply. Connects to the battery negative terminal.

Key specifications

Parameter Value
Manufacturer Shenzhen Fuman
Package SOT-23-6
Category PMIC
Pins 6

CAD (KiCad official)

  • Symbol: FM2119L
  • Footprint: Package_TO_SOT_SMD:SOT-23-6
  • 3D model: SOT-23-6 (KiCad packages3D, STEP)

Provenance

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

  • Datasheet: Shenzhen Fuman datasheet (9 pp, sha256 4ae7c5279013bc05, 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