NCP1835 Series

1.0 A One-Cell Lithium-ion/Polymer Battery Charger

Catalog

1.0 A One-Cell Lithium-ion/Polymer Battery Charger

Part	Number of Cells	Mounting Type	Charge Current - Max [Max]	Voltage - Supply (Max) [Max]	Current - Charging	Battery Chemistry	Supplier Device Package	Battery Pack Voltage	Operating Temperature [Max]	Operating Temperature [Min]	Package / Case
ON Semiconductor NCP1835MN20R2G	1	Surface Mount	1 A	6.5 V	Constant - Programmable	Lithium Ion	10-DFN (3x3)	4.2 V	70 °C	-20 °C	10-VFDFN Exposed Pad

Catalog

1.0 A One-Cell Lithium-ion/Polymer Battery Charger

Key Features

• Integrated Voltage and Current Regulation

• No External MOSFET, Sense Resistor or Blocking Diode Required

• Charge Current Thermal Foldback

• Integrated Precharge Current for Conditioning Deeply Discharged Battery

• Integrated End of Charge (EOC) Detection

• 1% Voltage Regulation

• 4.2 V or 4.242 V Regulated Output Voltage

• Regulation Maintained without a Battery Present

• Programmable Full Charge Current 300 1000 mA

• OpenDrain Charger Status and Fault Alert Flags

• Minimum Input Voltage of 2.4 V Allows Use of Current Limited Adapters

• Automatically Recharging if Battery Voltage Drops after Charging Cycle is Completed

• Pb-Free Packages are Available

• Cellular Phones, PDAs, MP3 Players, Battery Operated Devices

Description

NCP1835 is an integrated linear charger specifically designed to charge 1−cell Li−ion batteries with a constant current, constant voltage (CCCV) profile. It can charge at currents of up to 1.0 A. 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 NCP1835 can charge from a standard voltage−source wall adapter as a CCCV charger, or from a current limited adapter to limit power dissipation in the pass device.