HY2112-BB from HYCON Tech, 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	OD	output	MOSFET gate connection pin for discharge control. Drives the discharge N-MOSFET; output 'H' = VDD-0.02V (typ), 'L' = 0.1V (typ). Absolute max range: VSS-0.3 to VDD+0.3 V.
2	CS	input	Input pin for current sense and charger detection. Senses the PB- terminal voltage through R2 (2 kΩ typ) for discharge/charge overcurrent, short-circuit, and charger detection. High-withstand pin: absolute max VDD-20 to VDD+0.3 V.
3	OC	output	MOSFET gate connection pin for charge control. Drives the charge N-MOSFET; output 'H' = VDD-0.02V (typ), 'L' = 0.1V (typ). High-withstand pin: absolute max VDD-20 to VDD+0.3 V.
4	NC	unconnected	No connection. Leave floating on the PCB.
5	VDD	power_in	Power supply pin. Connect to the positive terminal of the battery cell through R1 (100 Ω typ) with a 0.1 µF stabilization capacitor to VSS. Operating range 1.5 V to 8 V; absolute max VSS-0.3 to VSS+10 V.
6	VSS	power_in	Ground pin. Connect to the negative terminal of the battery cell (0 V reference).

Key specifications

Parameter	Value
Manufacturer	HYCON Tech
Package	SOT-23-6
Category	PMIC
Pins	6

Ordering variants

Same part, different packaging or reel option.

HY2112-BB

CAD (KiCad official)

Symbol: HY2112-BB
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
`hy2112-bb.step`	97 KB	You want the bare part, or you mark your own boards.
`hy2112-bb-etched.step`	1.5 MB	You want the part with `HY2112-BB` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 399 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: HYCON Tech datasheet (17 pp, sha256 addb175ce68eeb7f, 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