CN3717 from ShangHai Consonance Elec, in a TSSOP-16. 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	VG	power_out	Internal LDO regulator output that supplies the internal driver circuitry. Connect a 100nF capacitor between VG and VCC.
2	PGND	power_in	Power ground return for the gate-driver and high-current internal paths.
3	GND	power_in	Analog signal ground for the internal reference, control and sensing circuitry.
4	CHRG	output	Open-drain charge status output (active-low, bar-CHRG). Pulled low during trickle, constant-current and over-charge states; high-impedance otherwise. Sinks 7-18mA (typ 12mA) at VCHRG=1V; leakage <=1uA at 25V.
5	DONE	output	Open-drain end-of-charge status output (active-low, bar-DONE). Pulled low in float-charge state, high-impedance otherwise. Sinks 7-18mA (typ 12mA) at VDONE=1V; leakage <=1uA at 25V.
6	TEMP	input	Battery-temperature sense input. Connect an NTC thermistor (approx 10k at 25C) from TEMP to GND. Internal ~50uA pull-up; comparator thresholds Vthh=1.61V (typ) and Vthl=0.175V (typ) define allowed temperature window. Temperature-abnormal shutdown only active during trickle, constant-current and over-charge phases.
7	EOC	input	End-of-charge current program input. Connect directly to GND or through an external resistor Rext (<=100k) to set the over-charge termination current: IEOC = 1.278(14350+Rext) / (RCS1e6). IEOC/ICH ranges from 10.5% (Rext=0) to 83.5% (Rext=100k).
8	COM1	passive	Loop compensation input 1. Connect a 470pF ceramic capacitor from COM1 to GND for control-loop stability.
9	COM2	passive	Loop compensation input 2. Connect a 120 ohm resistor in series with a 220nF ceramic capacitor from COM2 to GND.
10	FB	input	Battery-voltage feedback input. External resistor divider (R6/R7) from BAT to FB to GND sets the over-charge and float voltages: VBAT = 3.69(1+R7/R6) + IBR7, with IB (FB bias current) approx 40nA typ (260nA max). Max settable over-charge voltage 25V.
11	COM3	passive	Loop compensation input 3. Connect a 100nF capacitor from COM3 to GND. Absolute max voltage on COM3 to GND is 6.5V.
12	NC	unconnected	No internal connection.
13	CSP	input	Positive input of the charge-current sense amplifier. Measures the voltage across the current-sense resistor RCS placed between CSP and BAT; feeds the internal current regulation loop. Constant-current threshold VCS(CSP-BAT) = 120mV typ (113-127mV); trickle-mode threshold 23mV typ. Absolute max 28V.
14	BAT	input	Negative input of the charge-current sense amplifier and battery-terminal connection. Measures VRCS together with CSP; typical DC current into pin approx 10uA (VBAT=12V). Absolute max 28V.
15	VCC	power_in	Main supply / external power input, also the supply for internal circuitry. Operating range 7.5V to 28V; UVLO rising threshold 4.2-7.3V (typ 6V). Requires a local filter/bulk capacitor to GND.
16	DRV	output	Gate-drive output for the external P-channel MOSFET. VH = VCC-60mV (at IDRV=-10mA); VL = VCC-6.5V typ (5-8V) at IDRV=0. Rise/fall times ~40ns typ into 2nF load. Internal clamp keeps VCC-VDRV below 8V max so low-Vgs P-MOSFETs may be used.

Key specifications

Parameter	Value
Manufacturer	ShangHai Consonance Elec
Package	TSSOP-16
Category	PMIC
Pins	16

Ordering variants

Same part, different packaging or reel option.

CN3717

CAD (KiCad official)

Symbol: CN3717
Footprint: Package_SO:TSSOP-16_4.4x5mm_P0.65mm
3D model: TSSOP-16 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`cn3717.step`	205 KB	You want the bare part, or you mark your own boards.
`cn3717-etched.step`	1.6 MB	You want the part with `CN3717` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 405 faces against 255 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 (11 pp, sha256 6a59b77def44b583, 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