CJ9112T6A from Changjing, in a SOT-23-6L. 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	SW	passive	Switch node. Drain of the internal N-channel boost switch and source of the synchronous P-channel rectifier. Connects to the external boost inductor (typ. 4.7 µH) whose other end ties to VIN. Rated -0.3 V to 6 V.
2	GND	power_in	Device ground and reference for all internal voltages. Tie directly to the system ground plane close to the input and output capacitor return terminals.
3	VFB	input	Feedback voltage input to the internal error amplifier. Connects to the mid-point of an external resistor divider from VOUT to GND. Regulated to VFB = 1.215 V (typ., 1.179 V-1.251 V). Feedback input bias current is ~10 nA.
4	EN	input	Enable control input. Logic high (>=70% of VIN) turns the converter on; logic low (<=20% of VIN) puts the device into shutdown. In shutdown the 'A' variant provides true load disconnect (VOUT = 0 V). EN input leakage ~5 nA at VEN=5 V. Do not float.
5	VOUT	power_out	Boost converter output and sense pin for the internal synchronous P-channel rectifier. Adjustable 1.8 V to 5.5 V via external feedback divider. Requires an external output capacitor (typ. 10 µF ceramic). Also supplies internal circuitry once VOUT > VIN.
6	VIN	power_in	Input supply pin (battery input). Operating range 0.82 V to 5.5 V after start-up (start-up threshold 0.82 V @ 1 mA load; minimum operating 0.65 V). Absolute maximum 6 V. Bypass with a local ceramic capacitor (typ. 4.7 µF).

Key specifications

Parameter	Value
Manufacturer	Changjing
Package	SOT-23-6L
Category	PMIC
Pins	6

Ordering variants

Same part, different packaging or reel option.

CJ9112T6A
CJ9112T6B

CAD (KiCad official)

Symbol: CJ9112T6A
Footprint: Package_TO_SOT_SMD:SOT-23-6
3D model: SOT-23-6L (KiCad packages3D, STEP)

Provenance

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

Datasheet: Changjing datasheet (9 pp, sha256 1fbd0a963e871d48, 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