CONSONANCE
1A Lithium Battery Charger IC
CN3162
General Description:
The CN3162 is a complete constant-current /consta...
CONSONANCE
1A Lithium Battery Charger IC
CN3162
General Description:
The CN3162 is a complete constant-current /constant
voltage 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 applications. 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 i...