LT1074

LT1074/LT1076 Step-Down Switching Regulator FEATURES ■ 5A Onboard Switch (LT1074) ■ Operates Up to 60V Input ■ 100kHz Switching Frequency ■ Greatly Improved Dynamic Behavior ■ Available in Low Cost 5 and 7-Lead Packages ■ Only 8.5mA Quiescent Current ■ Programmable Current Limit ■ Micropower Shutdown Mode U APPLICATIO S ■ Buck Converter with Output Voltage Range of 2.5V to 50V ■ Tapped-Inductor Buck Converter with 10A Output at 5V ■ Positive-to-Negative Converter ■ Negative Boost Converter ■ Multiple Output Buck Converter DESCRIPTIO The LT®1074 is a 5A (LT1076 is rated at 2A) 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 com- ponents, are included on the chip. The topology is a classic positive “buck” configuration but several design innovations allow this device to be used as a positive-to-negative converter, a negative ...