CJ6101B33M from Changjing, in a SOT-23-5L. 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	VIN	power_in	Unregulated power input, 1.8 V to 8 V (abs max 9 V). Bypass to VSS with a 1 µF ceramic capacitor close to the pin; a small series resistor (~3 Ω) may be added with an X5R ceramic to damp start-up transients.
2	VSS	power_in	Device ground / common return for VIN, VOUT and CE. All voltages in the datasheet are referenced to this node.
3	CE	input	Chip-enable logic input. On the 'B' option (CJ6101B) it is active-high with an internal pull-down resistor to VSS and an internal output-discharge resistor on VOUT, so leaving CE open keeps the regulator off. VCE(H) ≥ 1.5 V (up to VIN) enables the regulator; VCE(L) ≤ 0.3 V disables it (standby current ≈ 0.1 µA).
4	NC	unconnected	No internal connection. Leave floating or tie to VSS; do not use as a routing via.
5	VOUT	power_out	Regulated 3.3 V output, up to 300 mA continuous (600 mA absolute-max). Requires a 1 µF ceramic (or tantalum) capacitor to VSS close to the pin for loop stability; typical dropout is 110 mV at 100 mA and output noise ≈ 27 × VOUT µVRMS (10 Hz-100 kHz).

Key specifications

Parameter	Value
Manufacturer	Changjing
Package	SOT-23-5L
Category	PMIC
Pins	5

Ordering variants

Same part, different packaging or reel option.

CJ6101B33MM
CJ6101B33MP
CJ6101B33MF

CAD (KiCad official)

Symbol: CJ6101B33M
Footprint: Package_TO_SOT_SMD:SOT-23-5
3D model: SOT-23-5L (KiCad packages3D, STEP)

Provenance

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

Datasheet: Changjing datasheet (10 pp, sha256 0e2340656a2045f6, 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