onsemi NCP1835B
NCP1835B is an integrated linear charger specifically designed to charge 1−cell Li−Ion batteries with a constant current, constant voltage (CCCV) profile. Its low input voltage capability, adjustable charge current, ability to maintain regulation without a battery, and its onboard thermal foldback make it versatile enough to charge from a variety of wall adapters. The NCP1835B can charge from a standard wall adapter or from the USB port.FEATURES
● Integrated Voltage and Current Regulation● No External MOSFET, Sense Resistor or Blocking Diode Required
● Charge Current Thermal Foldback
● Integrated Pre−charge Current for Conditioning a Deeply Discharged Battery
● Integrated End−of−Charge (EOC) Detection
● 1% Voltage Regulation
● 4.2 V Regulated Output Voltage
● Regulation Maintained without a Battery Present
● Programmable Full Charge Current
● Open−Drain Charger Status and Fault Alert Flags
● 2.8 V Output for AC Present Indication and Powering Charging Subsystems
● Minimum Input Voltage of 2.4 V Allows Use of Current Limited Adapters
● Automatically Recharging if Battery Voltage Drops after Charging Cycle is Completed
● Low Profile 3x3 mm DFN Package
● Pb−Free Package is Available Typical
APPLICATIONS
● Wireless Headsets● MP3 Players
● USB Appliances
● Battery Operated Devices MARKING DIAGRAM 1 DFN 3x3 MN SUFFIX CASE 485C 1 1835B ALYWG G 1835B = Device Code A = Assembly Location L = Wafer Lot Y = Year W = Work Week G...