1 Features

• 97% Efficient power stage for 8-A fast charge
• Patent pending switched cap charger architecture optimized for 50% duty cycle
  • Input voltage is 2x battery voltage (3.5 V to 4.65 V)
  • Output current is 2x of input current (up to
    4.5 A)
  • Reduces power loss across the cable
• Integrated programmable protection features for safe operation
  • Input over-voltage protection (BUS_OVP)
  • Input over-current protection (BUS_OCP) with adjustable alarm
  • Input over-voltage with external OVP FET (VAC_OVP up to 17 V, BQ25970 only)
  • Battery over-voltage protection (BAT_OVP) with adjustable alarm
  • Output over-voltage (VOUT_OVP)
  • Input over-current protection (BUS_OCP) with adjustable alarm
  • IBAT over-current protection (BAT_OCP) with adjustable alarm
  • Switching MOSFET cycle by cycle current limit
  • Battery temperature monitoring
  • Connector Temperature Monitoring
• Programmable settings for system optimization
  • Optional VBATREG and IBATREG regulation for system load and wall adapter transients (BQ25970 only with External OVP FET)
  • STAT, FLAG, and MASK options for interrupts
  • ADC Readings and configuration
• Integrated 12-bit effective analog-to digital converter (ADC)
  • ±0.5% BUS Voltage
  • ±0.5% VOUT Voltage
  • –0.4% to 0.2% BAT Voltage with differential sensing
  • ±1.5% BAT Current at 6 A with external R_SENSE
  • ±1% BAT Temperature
  • ±1% BUS Temperature
  • ±4°C Die temperature