LINEAR LT1579 300mA Dual Input Smart Battery Backup Regulator handbook
Update: 30 September, 2023
The LT1579 is a dual input, single output, low dropout regulator 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 comparators are included to monitor input voltage status. Two additional status flags indicate which input is supplying power and provide an early warning against loss of output regulation when both inputs are low. A secondary select pin is provided so that the user can force the device to switch from the primary input to the secondary input. Internal protection circuitry includes reverse-battery protection, current limiting, thermal limiting and reverse-current protection. The device is available in fixed output voltages of 3V, 3.3V and 5V, and as an adjustable device with a 1.5V reference voltage. The LT1579 regulators are available in narrow 16-lead SO and 16-lead SSOP packages with all features, and in SO-8 with limited features.
Brand: LINEAR
File format: PDF
Size: 275 KB
MD5 Checksum: F8E39F5EAAC15CACD2A719932E3F9209
Publication date: 05 June, 2012
Downloads: -
PDF Link: LINEAR LT1579 300mA Dual Input Smart Battery Backup Regulator handbook PDF