CN3702 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 gate-driver circuitry. Connect a 100 nF ceramic capacitor between VG and VCC.
2	PGND	power_in	Power ground for the internal gate driver and high-current return path.
3	GND	power_in	Analog ground for internal reference, amplifier and control circuitry.
4	CHRG	output	Open-drain charge-status output. Pulled low by internal transistor during charging; high-impedance otherwise. Sink capability ~12 mA (typ) at 1 V.
5	DONE	output	Open-drain charge-complete output. Pulled low by internal transistor when charging has finished; high-impedance otherwise. Sink capability ~12 mA (typ) at 1 V.
6	TEMP	input	Battery temperature-monitor input. Connect an NTC thermistor (10 kΩ @ 25 °C) between TEMP and GND. Internal ~50 uA pull-up; comparator thresholds ~1.61 V (high-temp) and ~0.175 V (low-temp) suspend charging when temperature is out of range.
7	EOC	input	End-of-charge current programming input. Connect directly to GND for the minimum termination current or through a resistor Rext (≤100 kΩ) to GND to program the termination current per IEOC = 1.278·(14350 + Rext) / (Rcs·10^6).
8	COM1	passive	Loop compensation input 1. Connect a 470 pF capacitor between COM1 and GND.
9	COM2	passive	Loop compensation input 2. Connect a series 120 Ω resistor and 220 nF capacitor between COM2 and GND.
10	test	input	Factory test pin. Must be connected directly to GND for normal operation.
11	COM3	passive	Loop compensation input 3. Connect a 100 nF capacitor between COM3 and GND. Absolute-max voltage 6.5 V to GND.
12	NC	unconnected	No internal connection.
13	CSP	input	Positive charge-current sense input. Senses the voltage across the external current-sense resistor Rcs connected between CSP and BAT; the internal loop regulates VCSP−VBAT to 200 mV (typ) so that Icharge = 200 mV / Rcs.
14	BAT	input	Battery-voltage sense input and negative current-sense input. Internal precision resistor divider and reference set the 8.4 V (±1%) constant-voltage regulation point for the 2-cell battery.
15	VCC	power_in	External supply input, also powers internal circuitry. Operating range 7.5 V to 28 V; connect a bypass capacitor from VCC to GND. UVLO threshold ~6 V typical.
16	DRV	output	Gate driver output for the external P-channel MOSFET. Drives referenced to VCC (VCC−VDRV ≈ 60 mV high, ≥5.8 V low), with 30-65 ns typical rise/fall times into a 2 nF load.

Key specifications

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

Ordering variants

Same part, different packaging or reel option.

CN3702

CAD (KiCad official)

Symbol: CN3702
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
`cn3702.step`	205 KB	You want the bare part, or you mark your own boards.
`cn3702-etched.step`	1.9 MB	You want the part with `CN3702` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 463 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 c3d58229f9a0f8f3, 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