CN3300 from ShangHai Consonance Elec, 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	CSN	input	Inductor current sense negative input. A current-sense resistor RCS is connected between VIN and CSN. Normal operation upper threshold (VIN-CSN) is 150 mV typ, lower threshold 120 mV typ. Input current 1 uA max.
2	FB	input	Battery voltage feedback input. Normally connected to an external resistor divider from the battery. Charge terminates when FB rises to 1.205V typ; recharge is initiated when FB drops to 1.155V typ. Pin current +/-100 nA.
3	VIN	power_in	Positive supply input, 4V to 28V. Provides operating power to CN3300 internal circuitry and serves as the positive input of the inductor (input) current sense.
4	VCC	power_out	5V internal LDO regulator output. Requires a 4.7 uF or 10 uF bypass capacitor to GND. Maximum output current 5 mA; output may drop below 5V when VIN is between 4V and 5.5V.
5	DRV	output	Gate drive output for the external N-channel power MOSFET. Rail-to-rail swing between GND and VCC; source capability 0.5 A, sink capability 1 A.
6	GND	power_in	Power ground / device ground return.

Key specifications

Parameter	Value
Manufacturer	ShangHai Consonance Elec
Package	SOT-23-6
Category	PMIC
Pins	6

Ordering variants

Same part, different packaging or reel option.

CN3300

CAD (KiCad official)

Symbol: CN3300
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
`cn3300.step`	97 KB	You want the bare part, or you mark your own boards.
`cn3300-etched.step`	1.7 MB	You want the part with `CN3300` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 396 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: ShangHai Consonance Elec datasheet (9 pp, sha256 6be70a4607e4f497, 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