HY2112-AB 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	Discharge control MOSFET gate drive output. Drives the gate of the external discharge-control N-MOSFET; V_OH ≈ VDD-0.02V, V_OL ≈ 0.1V. Pulled low to disable discharging under overdischarge, discharge overcurrent, or load short-circuit conditions.
2	CS	input	Overcurrent detection input and charger detection terminal. Senses the voltage across the series MOSFET stack for discharge/charge overcurrent (V_DIP=+100mV, V_CIP=-200mV for -AB) and load short-circuit (V_SIP=0.85V) detection. High-voltage tolerant (rated VDD-20 to VDD+0.3V, abs-max ~20V) to allow charger connection.
3	OC	output	Charge control MOSFET gate drive output. Drives the gate of the external charge-control N-MOSFET; V_OH ≈ VDD-0.02V, V_OL ≈ 0.1V. Pulled low to disable charging under overcharge or charge overcurrent conditions. Uses a level-shifter to tolerate charger-side high voltages (abs-max VDD-20 to VDD+0.3V).
4	NC	unconnected	No internal connection. Leave floating or tie to VSS at the board designer's discretion.
5	VDD	power_in	Positive supply input; connects to the battery positive terminal through a decoupling resistor. Operating range VDD-VSS = 1.5V to 8V (abs-max 10V). Typical operating current 3.0 µA at VDD=3.2V (max 6.0 µA); sleep-mode current 0.1 µA max.
6	VSS	power_in	Ground / negative supply input; connects to the battery negative terminal (reference for all internal detection thresholds).

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-AB
HY2112-ABBB
HY2112-ABCB
HY2112-ABEB
HY2112-ABGB
HY2112-ABHB

CAD (KiCad official)

Symbol: HY2112-AB
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: HYCON Tech datasheet (17 pp, sha256 003247d01174fb89, 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