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NCP1835B

ON Semiconductor
Part Number NCP1835B
Manufacturer ON Semiconductor
Description Integrated Li-Ion Charger
Published Jun 12, 2010
Detailed Description NCP1835B Integrated Li−Ion Charger NCP1835B is an integrated linear charger specifically designed to charge 1−cell Li−I...
Datasheet PDF File NCP1835B PDF File

NCP1835B
NCP1835B

Overview
NCP1835B Integrated Li−Ion Charger 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.
It has been optimized to charge low capacity batteries such as those found in wireless headsets and flash memory−based MP3 players.
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 http://onsemi.
com 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 = Pb−Free Package (Note: Microdot may be in either location) PIN CONNECTIONS VCC 1 FAULT 2 CFLG 3 TIMER 4 GND 5 DFN 3x3 10 BAT 9 VSNS 8 ISEL 7 V2P8 6 EN (Top View) ORDERING INFORMATION Device NCP1835BMNR2 Package DFN−10 Shipping† 3000 Units/Reel NCP1835BMNR2G DFN−10 3000 Units/Reel (Pb−Free) †For information on tape and reel specifications, including par...


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