DESCRIPTION
The LT1176 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.

FEATURES
■ 1.2A On-Board Switch
■ 100kHz Switching Frequency
■ Excellent Dynamic Behavior
■ DIP and Surface Mount Packages
■ Only 8mA Quiescent Current
■ Preset 5V Output Available
■ Operates Up to 35V Input
■ Micropower Shutdown Mode

APPLICATIONS
■ Buck Converter with Output Voltage Range of 2.5V to 30V
■ Positive-to-Negative Converter
■ Negative Boost Converter
■ Mulitple Output Buck Converter