Description

3A Monolithic Buck-Boost Supercapacitor Charger and Balancer with Accurate Input Current Limit Features: ±2% Accurate Average Input Current Limit Programmable Up to 3A Programmable Maximum Capacitor Voltage Limit Active Charge Balancing for Fast Charging of Unmatched Capacitors Charges Single or Stacked Capacitors VIN Range: 1.73V to 5.5V VOUT Range: 1.8V to 5.5V <2μA Quiescent Current from VOUT When Charged Output Disconnect in Shutdown: <1μA IQ Shutdown Power-Good Comparator Power Failure Indicator Thermally Enhanced 20-Lead (4mm × 5mm × 0.75mm) QFN and 24-Lead TSSOP Packages