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Product Information
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1A Lithium Battery Charger IC
Product Profile
 Reference articles
General Description£º
The CN3162 is a complete constant-current /constantvoltage linear charger for single cell lithium rechargeable
battery. The device contains an on-chip power MOSFET and eliminates the need for the external current sense
resistor and blocking diode. Its low external component count makes CN3162 ideally suited for portable
Thermal feedback regulates the charge current to limit the die temperature during high power operation or high
ambient temperature. The regulation voltage is internally fixed at 4.2V, it can also be adjusted with an
external resistor. The charge current can be programmed externally with a single resistor. When the input
supply is removed, the CN3162 automatically enters a low power sleep mode, dropping the battery drain current
to less than 3uA. Other features include under-voltage lockout,automatic recharge, battery temperature sensing
and charging/termination indicator.
.The CN3162 is available in a thermally enhanced 8-pin SOP/PP package.
Mobile Phones ¡¡ ¡¡
Digital Still Cameras ¡¡ ¡¡
Power Bank ¡¡ ¡¡
Portable Devices ¡¡ ¡¡
Variety Of Chargers ¡¡ ¡¡
Charges Single Cell Li-Ion Batteries
Input Voltage Range From 3.8V to 6V
On-chip Power MOSFET
No external Blocking Diode or Current Sense Resistors Required
Constant Charge Voltage 4.2V, and also can be adjustable by an external resistor
Precharge Conditioning for Reviving Deeply Discharged Cells and Minimizing Heat
¡¡ Dissipation During Initial Stage of Charge
Programmable Continuous Charge Current Up to 1A
Constant-Current/Constant-Voltage/Constant-Temp Operation with Thermal Regulation to
¡¡ Maximize Charge Rate Without Risk of Overheating
Automatic Low-Power Sleep Mode When Input Supply Voltage is Removed
Status Indication for LEDs or uP Interface
C/10 Charge Termination
Automatic Recharge
Battery Temperature Sensing
Available in SOP8/PP Package
Pb-free, rohs-compliant, halogen free
Application Note£º
Quick Start of CN31XX Demo Board
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