FM2113 from Shenzhen Fuman, in a SOT-23-6. Pinout and pin descriptions extracted from the datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin	Name	Type	Function
1	OD	output	Discharge control output. Connects to the gate of the external discharge control N-MOSFET (Q2). Drives high (VDD-0.02 V typ) in normal state and low (0.1 V typ) during over-discharge, over-current, or short-circuit protection.
2	CS	input	Discharge current sense input. Connects to the source/drain node of the external charge-control N-MOSFET (Q1) via a series resistor (typ 2 kΩ). Senses voltage drop across Q1+Q2 for over-current (VDIP ≈ 150 mV) and short-circuit (VSIP ≈ 1.0 V) detection. Absolute max rating VDD-20 V to VDD+0.3 V.
3	OC	output	Charge control output. Connects to the gate of the external charge control N-MOSFET (Q1). Drives high (VDD-0.02 V typ) in normal state and low (0.1 V typ) during over-charge or charge-over-current protection. Absolute max rating VDD-20 V to VDD+0.3 V.
4	NC	unconnected	Not connected. Leave floating or tie per PCB layout convention.
5	VDD	power_in	Power supply input. Connect to the positive terminal of the battery through a 100 Ω series resistor (R1). A 0.1 µF ceramic decoupling capacitor is required between VDD and VSS. Operating range 1.5 V to 8 V (absolute max VSS-0.3 to VSS+10 V). Operating current 3.0 µA typ at VDD=3.9 V.
6	VSS	power_in	Ground / negative supply. Connect to the negative terminal of the battery cell.

Key specifications

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

Ordering variants

Same part, different packaging or reel option.

FM2113A
FM2113B
FM2113C
FM2113D

CAD (KiCad official)

Symbol: FM2113
Footprint: Package_TO_SOT_SMD:SOT-23-6
3D model: SOT-23-6 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`fm2113.step`	97 KB	You want the bare part, or you mark your own boards.
`fm2113-etched.step`	1.2 MB	You want the part with `FM2113` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 311 faces against 117 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: Shenzhen Fuman datasheet (8 pp, sha256 60016c51cced1a1c, 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