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LTC3625 - 1A High Efficiency 2-Cell Supercapacitor Charger

Description

The LTC®3625/LTC3625-1 are programmable supercapacitor chargers designed to charge two supercapacitors in series to a fixed output voltage (4.8V/5.3V or 4V/4.5V selectable) from a 2.7V to 5.5V input supply.

Features

  • n High Efficiency Step-Up/Step-Down Charging of Two Series Supercapacitors n Automatic Cell Balancing Prevents Capacitor Overvoltage During Charging n Programmable Charging Current Up to 500mA (Single Inductor), 1A (Dual Inductor) n VIN = 2.7V to 5.5V n Selectable 2.4V/2.65V Regulation per Cell (LTC3625) n Selectable 2V/2.25V Regulation per Cell (LTC3625-1) n Low No-Load Quiescent Current: 23µA n IVOUT, IVIN < 1µA in Shutdown n Low Profile 12-lead 3mm × 4mm DFN Package.

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Full PDF Text Transcription

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LTC3625/LTC3625-1 1A High Efficiency 2-Cell Supercapacitor Charger with Automatic Cell Balancing Features n High Efficiency Step-Up/Step-Down Charging of Two Series Supercapacitors n Automatic Cell Balancing Prevents Capacitor Overvoltage During Charging n Programmable Charging Current Up to 500mA (Single Inductor), 1A (Dual Inductor) n VIN = 2.7V to 5.5V n Selectable 2.4V/2.65V Regulation per Cell (LTC3625) n Selectable 2V/2.
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