LT1271 4A High Efficiency Switching Regulators

LT1271 4A High Efficiency Switching Regulators

of the LT1271/LT1269. Application circuits are included to show the capability of the LT1271/LT1269. A complete design manual (AN-19) should be obtained to assist in developing new designs. This manual contains a comprehensive discussion of both the LT1070 and the external components used with it, a.

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. Ide.