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CN3601

ShangHai Consonance Elec · Battery Management · SSOP-10-150mil

CN3601 from ShangHai Consonance Elec, in a SSOP-10-150mil. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 CHRG output Charge-status open-drain output that is pulled low by an internal N-MOSFET during constant-current and maintenance charging and is high-impedance in other states; the electrical table specifies a 10 mA sink at VCHRG = 0.3 V and 100 nA leakage at 6 V.
2 Isel input Inductor peak-current select input that accepts TTL or CMOS levels: high gives 1.19 A (typ.) in constant-current mode and 0.62 A in maintenance mode, low gives 0.64 A and 0.44 A, and voltages between 0.7 V and 2.2 V must not be applied.
3 TEMP input Battery temperature-monitor input driven by an NTC/resistor divider; charging pauses when TEMP falls below 44.5% of VIN and resumes when it rises more than 40 mV above that threshold, and it should be tied to VIN if the function is unused.
4 BAT input Battery positive connection and voltage feedback input that sets the charger state, with end-of-constant-current at 1.9 V (typ.), recharge threshold at 1.742 V (typ.), and overvoltage protection at 1.997 V (typ.).
5 GND power_in Ground connection for the input supply and the battery negative terminal.
6 SW output Inductor connection to the internal P-channel and N-channel power MOSFETs, with on-resistances of 0.4 Ω (P-channel to VIN) and 0.3 Ω (N-channel to GND).
7 VIN power_in Positive input supply that powers the internal circuits, operating from 2.7 V to 6.5 V with an absolute maximum of 7.0 V.
8 VIN power_in Second input supply pin listed as VIN, used with the same 2.7 V to 6.5 V input range.
9 DONE output Charge-done open-drain output that is pulled low when charging terminates and is high-impedance in other states; the electrical table specifies a 10 mA sink at VDONE = 0.3 V and 100 nA leakage at 6 V.
10 CT passive Timing-capacitor connection to GND that sets the maintenance-charge timer as t = 12.18×10^9 × C2 seconds (C2 in farads), with C2 required to be greater than 100 pF for timing accuracy.

Key specifications

Parameter Value
Manufacturer ShangHai Consonance Elec
Package SSOP-10-150mil
Category Power Management (PMIC)
Pins 10

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Input voltage range VIN 2.7 6.5 V 4
Battery overvoltage protection threshold (rising) VOV 1.967 1.997 2.027 V BAT voltage rising 4
Battery overvoltage release threshold (falling) VOVRLS 1.906 1.936 1.966 V BAT voltage falling 4
Constant-current charge end voltage (BAT rising) VCCT 1.881 1.9 1.919 V BAT pin voltage rising 4
Recharge threshold (BAT falling) Vrech 1.722 1.742 1.762 V BAT pin voltage falling 4
BAT pin current IBAT 4.7 6 8 uA VBAT=1.9V 4
TEMP pin input current ITEMP -100 100 nA 4
TEMP comparator threshold VTEMP 42.5 44.5 46.5 %VIN TEMP pin voltage falling 4
Isel input low level VL 0.7 V Isel pin voltage falling 4
Isel input high level VH 2.2 V Isel pin voltage rising 4
Isel input current (low) IL -100 nA Isel=GND, VIN=6V 4
Isel input current (high) IH 100 nA Isel=VIN=6V 4
CHRG pin sink current ISINK 10 mA VCHRG=0.3V, charge mode 4
CHRG pin leakage current ILEAK 100 nA VCHRG=6V, charge end 4
DONE pin sink current ISINK 10 mA VDONE=0.3V, charge end 4
DONE pin leakage current ILEAK 100 nA VDONE=6V, charge mode 4
Fixed off time (charge mode) toff 1.2 1.5 1.8 uS Charge mode 4
UVLO threshold VUVLO 2.65 V 4
Operating current IVIN 250 320 390 uA VBAT=2.1V, no switching 4
Over-temperature protection threshold tOTP 145 °C 4
Over-temperature protection hysteresis Hopt 21 °C 4
Inductor peak current ipeak (Isel high, constant-current charge) ipeak 1.19 A Isel high; constant-current charge mode 4
Inductor peak current ipeak (Isel high, maintenance charge) ipeak 0.62 A Isel high; maintenance charge mode 4
Inductor peak current ipeak (Isel low, constant-current charge) ipeak 0.64 A Isel low; constant-current charge mode 4
Inductor peak current ipeak (Isel low, maintenance charge) ipeak 0.44 A Isel low; maintenance charge mode 4
N-channel MOSFET on-resistance RdsonN 0.3 ohm N-channel MOSFET between SW and GND 4
P-channel MOSFET on-resistance RdsonP 0.4 ohm P-channel MOSFET between SW and VIN 4
TEMP comparator hysteresis HTEMP 40 mV 4
Supply voltage on VIN and Isel pins VIN, Isel -0.3 7 V 3
BAT pin voltage BAT -0.3 7 V 3
Open-drain status output pin voltage (CHRG/DONE; symbol text not legible) -0.3 V Upper limit printed as VIN 3
TEMP, SW and CT pin voltage TEMP, SW, CT -0.3 V Upper limit printed as VIN 3
Maximum junction temperature 150 °C 3
Operating ambient temperature -40 85 °C 3
Storage temperature -65 150 °C 3

CAD (KiCad official)

  • Symbol: CN3601
  • Footprint: Package_SO:SSOP-10_3.9x4.9mm_P1.00mm
  • 3D model: SSOP-10-150mil (KiCad packages3D, STEP)
  • 3D model files: cn3601-etched.step / cn3601-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); cn3601.step / cn3601.glb are the bare package body.

Provenance

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

  • Datasheet: ShangHai Consonance Elec datasheet (10 pp, sha256 16d3e428c9f9006b, retrieved 2026-10-17, 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: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (text), consensus claude-sonnet-5-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF