LT1170CT 100kHz 5A, 2.5A and 1.25A High Efficiency Switching Regulators

The LT®1170/LT1171/LT1172 are monolithic high-power switching regulators. They can be operated in all standard switching configurations including buck, boost, flyback, forward, inverting, and “Cuk.” A high-current, high-efficiency switch is included on the die along with all oscillator, control, and protection circuitry. Integration of all functions allows the LT1170/LT1171/LT1172 to be built in a standard 5-pin TO-3 or TO-220 power package as well as the 8-pin packages (LT1172). This makes them extremely easy to use and provides “bust proof” operation similar to that obtained with 3-pin linear regulators.

Features: –

1.Wide Input Voltage Range: 3V to 60V
2.Low Quiescent Current: 6mA
3.Internal 5A Switch
(2.5A for LT1171, 1.25A for LT1172)
4. Shutdown Mode Draws Only 50µA Supply Current
5.Very Few External Parts Required
6.Self-Protected Against Overloads
7.Operates in Nearly All Switching Topologies
8.Flyback-Regulated Mode Has Fully Floating Outputs
9.Comes in Standard 5-Pin Packages
10.LT1172 Available in 8-Pin Mini DIP and Surface Mount Packages
11.Can Be Externally Synchronized