DESCRIPTION

The LT ®1070/LT1071 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 LT1070/LT1071 to be built in a standard 5-pin T0-220 power package. This makes it extremely easy to use and provides “bust proof” operation similar to that obtained with 3-pin linear regulators.

FEATURES

■ Wide Input Voltage Range: 3V to 60V
■ Low Quiescent Current: 6mA
■ Internal 5A Switch (2.5A for LT1071)
■ Very Few External Parts Required
■ Self Protected Against Overloads
■ Operates in Nearly All Switching Topologies
■ Shutdown Mode Draws Only 50µA Supply Current
■ Flyback Regulated Mode Has Fully Floating Outputs
■ Comes in Standard 5-Pin TO-220 Package
■ Can be Externally Synchronized (Consult Factory)

APPLICATIONS

■ Logic Supply 5V at 10A
■ 5V Logic to ±15V Op Amp Supply
■ Off-Line Converter Up to 200W
■ Battery Upconverter
■ Power Inverter (+ to –) or (– to +)
■ Fully Floating Multiple Outputs
■ For Lower Current Applications, See the LT1072