Datasheet Summary
LT1579 300mA Dual Input Smart Battery Backup Regulator
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DESCRIPTION
The LT®1579 is a dual input, single output, low dropout regulator. This device is designed to provide an uninterruptible output voltage from two independent input voltage sources on a priority basis. All of the circuitry needed to switch smoothly and automatically between inputs is incorporated. The LT1579 can supply 300mA of output current from either input at a dropout voltage of 0.4V. Quiescent current is 50µA, dropping to 7µA in shutdown. Two parators are included to monitor input voltage status. Two additional status flags indicate which input is supplying power and provide an...