CN3600 from ShangHai Consonance Elec, in a ESOP-8. 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	CHRG	output	Charge status indicator, open-drain output. Pulled low by an internal N-channel MOSFET during constant-current or trickle charge; high-impedance otherwise. Sink capability 10 mA at VCHRG=0.3V.
2	Isel	input	Inductor peak current select input. Logic high sets ipeak=1.19A (CC mode) / 0.62A (trickle); logic low sets ipeak=0.64A / 0.44A. TTL/CMOS compatible; VIL max 0.7V, VIH min 2.2V. Do not drive between 0.7V-2.2V.
3	BAT	power_out	Battery positive terminal sense/connection. The IC monitors this pin to determine charger state (Vhigh=1.46V typ, Vcct=1.36V typ, Vrech=1.339V typ, Vov=1.557V typ). IBAT ~6.3 uA at VBAT=1.5V.
4	GND	power_in	Ground connection. Negative return for the input supply and battery.
5	SW	output	Switching node to external inductor. Internally driven by a P-channel MOSFET to VIN (RdsonP ~0.4Ω) and an N-channel MOSFET to GND (RdsonN ~0.3Ω). Fixed 2 us off-time PFM control.
6	VIN	power_in	Input supply positive. Operating range 2.7V to 6.5V; UVLO max 2.65V. Quiescent current ~320 uA at VIN=5V with VBAT=2.1V and no switching. Absolute max 7.0V.
7	DONE	output	Charge-complete status indicator, open-drain output. Pulled low by an internal switch when charging ends; high-impedance otherwise. Sink capability 10 mA at VDONE=0.3V.
8	CT	passive	Timing capacitor connection. A capacitor from CT to GND sets the trickle-charge timeout: t_timing = 12.18e9 × C2 (seconds). C2 should be >100 pF for good accuracy; typically 1 uF or 2.2 uF X5R/X7R ceramic.

Key specifications

Parameter	Value
Manufacturer	ShangHai Consonance Elec
Package	ESOP-8
Category	PMIC
Pins	8

Ordering variants

Same part, different packaging or reel option.

CN3600

CAD (KiCad official)

Symbol: CN3600
Footprint: Package_SO:SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.29x3mm
3D model: ESOP-8 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`cn3600.step`	125 KB	You want the bare part, or you mark your own boards.
`cn3600-etched.step`	1.8 MB	You want the part with `CN3600` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 423 faces against 152 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 (10 pp, sha256 d9bdc1408664b261, 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