CN3066B

CONSONANCE 1A Lithium Battery Charger CN3066B General Description: The CN3066B 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. Furthermore, the CN3066B is specifically designed to work within USB power specifications. Its low external component count makes CN3066B 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 (wall adapter or USB supply) is removed, the CN3066B automatically enters a low power sleep mode, dropping the battery drain current to less than 3uA. Other features includ...