LT1176-5

LT1176/LT1176-5 Step-Down Switching Regulator FEATURES n 1.2A Onboard Switch n 100kHz Switching Frequency n Excellent Dynamic Behavior n DIP and Surface Mount Packages n Only 8mA Quiescent Current n Preset 5V Output Available n Operates Up to 35V Input n Micropower Shutdown Mode APPLICATIONS n Buck Converter with Output Voltage Range of 2.5V to 30V n Positive-to-Negative Converter n Negative Boost Converter n Multiple Output Buck Converter DESCRIPTION The LT®1176 is a 1A monolithic bipolar switching regulator which requires only a few external parts for normal operation. The power switch, all oscillator and control circuitry and all current limit components are included on the chip. The topology is a classic positive buck configuration but several design innovations allows this device to be used as a positive-to-negative converter, a negative boost converter, and as a flyback converter. The switch output is specified to swing below ground. The LT1176 uses a true analog m...