bq25895 - Texas Instruments

bq25895 I2C Controlled Single Cell 5-A Fast Charger

The bq25895 is a highly-integrated 5-A switch-mode battery charge management and system power path management device for single cell Li-Ion and Lipolymer battery. The devices support high input voltage fast charging. The low impedance power path optimizes switch-mode operation efficiency, reduces battery charging time and extends battery life during discharg.

Features

•1 High Efficiency 5-A, 1.5-MHz Switch Mode Buck Charge
  – 93% Charge Efficiency at 2 A and 91% Charge Efficiency at 3 A Charge Current
  – Optimize for High Voltage Input (9 V to 12 V)
  – Low Power PFM mode for Light Load Operations
• Boost Mode Operation with Adjustable Output from 4.5 V to 5.5 V
  – Selectable 500-KHz to 1.5-MHz Boost Converter with up to 3.1-A Output
  – 93% Boost Efficiency at 5 V at 1 A Output
• Integrated Control to Switch Between Charge and Boost Mode
• Single Input to Support USB Input and Adjustable High Voltage Adapters
  – Support 3.9-V to 14-V Input Voltage Range
  – Input Cu.