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LTC3643 Datasheet 2a Bidirectional Power Backup Supply

Manufacturer: Linear Technology (now Analog Devices)

Overview: LTC3643 2A Bidirectional Power Backup Supply.

General Description

The LTC®3643 is a bidirectional synchronous stepup charger and step-down converter which efficiently charges a capacitor array up to 40V from an input supply between 3V to 17V.

When the input supply falls below the programmable power-fail thr

Key Features

  • nn Bidirectional Synchronous Boost Capacitor Charger/Buck Regulator for System Backup nn Wide Input Voltage Range: 3V to 17V nn Up to 40V Capacitor Voltage Storage for High Energy Backup nn 2A Maximum CAP Charge Current nn Integrated Power N-Channel MOSFETs (150mΩ Top and 75mΩ Bottom) nn Integrated Power N-Channel MOSFET for Output/CAP Disconnect (50mΩ) nn Input Current Limit During Charging nn Fast 1MHz Switching Frequency nn ±1% Reference Accuracy for System Voltage Regulation nn Indicator Out.

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