FEATURES
s s s s s s s s s DESCRIPTIO Wide Input Voltage Range 3.5V to 30V Low Quiescent Current: 7mA Internal 4A Switch Very Few External Parts Required Self Protected Against Overloads Shutdown Mode Draws Only 100µA Supply Current Flyback Regulated Mode Has Fully Floating Outputs Comes in Standard 5-Pin Package Can Be Externally Synchronized (See LT1072 Data Sheet) APPLICATI s s s s s S Boost Converter High Efficiency Buck Converter PC Power Supply with Multiple Outputs Battery Up-Converter Negative-to-Positive Converter The LT®1271 and LT1269 are monolithic high power switching regulators. Identical to the popular LT1070, except for switching frequency (LT1271 = 60kHz, LT1269 = 100kHz) and slightly lower switch current, they can be operated in all standard switching configurations including buck, boost, flyback and inverting. A high current, high efficiency switch is included on the die along with all oscillator, control and protection circuitry. Integration of all functions allows By utilizing current mode switching techniques, they provides excellent AC and DC load and line regulation.
Linear Technology
