BQ25970

Product Folder Order Now Technical Documents Tools & Software Support & Community BQ25970, BQ25971 SLUSD72B – NOVEMBER 2017 – REVISED APRIL 2020 BQ25970, BQ25971 I2C Controlled Single Cell High Efficiency 8-A Switched Cap Fast Chargers With ADC 1 Features 1 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...