onsemi NCP1871
The NCP1871 is a NVDC switching battery charger designed for 2−3−4 battery cell applications such as ultra books or tablets. It is optimized for use with the mobile computing chipsets, and is also compatible with most mobile solutions. The NCP1871 is designed around a full NMOS DC to DC controller that brings down the high voltage charger adapter voltage to a regulated system supply that is in the same range as the battery pack voltage.FEATURES
● SMBus Host−controlled NVDC−1 2S−4S Battery Charge Controller● Instant−on Works with No Battery or Deeply Discharged Battery
● Automatic Supplement Mode with BATFET Control
● Battery Removal Sensor
● Programmable Switching Frequency
● SMBUS Clock up to 400 kHz (I2C compatible)
● Programmable Charge Current, Charge Voltage, Input Current Limit with Interrupt Management ♦ ±0.5% Charge Voltage Regulation up to 18.08 V ♦ ±3% Input/Charge Current Regulation up to 8.064 A
● Support Battery LEARN Function
● Support Shipping Mode and Hard System Reset
● Ultra−Low Quiescent Current of 10 mA at OFF Mode and High PFM Light Load Efficiency 80% at 20 mA Load to Meet Energy Star and ErP Lot6
● Full NMOS Solution
● Current and Power Monitoring
● 3.5 mm x 3.5 mm QFN−20 Package
● These Devices are Pb−Free, Halogen Free/BFR Free and are RoHS Compliant Typical
APPLICATIONS
● Ultrabook● Notebook
● Tablet PC 1 QFN20 MN SUFFIX CASE 485CP MARKING DIAGRAM XXXXX XXXXX ALYWG G XXXXX = Specific Devic...