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NCP1835

ON Semiconductor
Part Number NCP1835
Manufacturer ON Semiconductor
Description Integrated Li-Ion Charger
Published Jun 17, 2007
Detailed Description NCP1835 Integrated Li-Ion Charger NCP1835 is an integrated linear charger specifically designed to charge 1−cell Li−Ion...
Datasheet PDF File NCP1835 PDF File

NCP1835
NCP1835

Overview
NCP1835 Integrated Li-Ion Charger 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.
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 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 • 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 Packages are Available Typical Applications • Cellular Phones • PDAs, MP3 Players • Stand−Alone Chargers • Battery Operated Devices http://onsemi.
com MARKING DIAGRAMS 1 1835 4200 ALYWG G DFN 3x3 MN SUFFIX CASE 485C 1 1835 4242 ALYWG G 1835 = Device Code 4200 = 4.
2 V 4242 = 4.
242 V A = Assembly Location L = Wafer Lot Y = Year W = Work Week G = Pb−Free Package (Note: Microdot may be in either location) PIN CONNECTIONS VCC FAULT CFLG TIMER GND 1 2 3 4 5 DFN 3x3 10 BAT 9 VSNS 8 ISEL 7 V2P8 6 EN (Top View) ORDERING INFORMATION See detailed ordering and shipping information in the package dimensions section on page ...


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