FM2111-GB 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 (normal); low = Q2 off (overdischarge / overcurrent-discharge / short-circuit protection).
2	VM	input	Charge/discharge current-sense input. Connects through a current-limit resistor (typ. 1 kΩ, recommended 2.2 kΩ) to the source of the external charge-control N-MOSFET Q1, sensing the voltage drop across Q1+Q2 to detect overcurrent, short-circuit, and charger-present conditions.
3	COUT	output	Charge control output. Drives the gate of the external charge-control N-MOSFET Q1. High = Q1 on (normal); low = Q1 off (overcharge or overcurrent-charge protection). Datasheet Chinese text says Q2 but pinout diagram and functional description confirm this pin controls Q1.
4	NC	unconnected	No connect. Leave floating (悬空).
5	VDD	power_in	Positive supply input. Connects to the battery positive terminal, typically through a 100 Ω series resistor (R1). Requires a 0.1 uF ceramic decoupling capacitor to VSS. Absolute max -0.3 V to +10 V; operating range 1.5 V to 10 V.
6	VSS	power_in	Ground / negative supply. Connects to the battery negative terminal and serves as the IC reference.

Key specifications

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

Ordering variants

Same part, different packaging or reel option.

FM2111-GB

CAD (KiCad official)

Symbol: FM2111-GB
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 7a9ff443d5f12680, 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