LM2675 Datasheet | Texas Instruments

Features - Efficiency up to 96% - Available in 8-pin SOIC, PDIP, and 16-pin WSON package - Requires only 5 external ponents - 3.3V, 5V, 12V, and adjustable output versions - 1.21V to 37V adjustable version output voltage range - ±1.5% maximum output voltage tolerance over line and load conditions - Specified 1A output load current - 8V to 40V wide input voltage range - 260k Hz fixed frequency internal oscillator - TTL shutdown capability, low-power standby mode - Thermal shutdown and current limit protection - Create a custom design using the LM2675 with the WEBENCH® Power Designer 2 Applications - Simple high-efficiency (> 90%) step-down (buck) regulator - Efficient preregulator for linear regulators - Positive-to-negative converter 3 Description The LM2675 series of regulators are monolithic integrated DC-DC converter circuits built with a LMDMOS process. These regulators provide all the active functions for a step-down (buck) switching regulator, capable of driving a 1A load current with excellent line and load regulation. These devices are available in fixed output voltages of 3.3V, 5V, 12V, and an adjustable output version. Requiring a minimum number of external ponents, these regulators are simple to use and include patented internal frequency pensation and a fixed frequency oscillator. The LM2675 series operates at a switching frequency of 260k Hz, thus allowing smaller-sized filter ponents than what is needed with lower frequency switching regulators. Because of the very high efficiency (> 90%), the copper traces on the printed-circuit board are the only heat sinking needed. Package Information PART NUMBER PACKAGE(1) PACKAGE SIZE(2) D (SOIC, 8) 4.9mm × 6mm P (PDIP, 8) 9.81mm × 9.43mm NHN (WSON, 16) 5mm × 5mm (1) For more information, see Section 10. (2) The package size (length × width) is a nominal value and includes pins, where applicable. Copyright © 2016, Texas Instruments Incorporated Typical Application An IMPORTANT NOTICE at the...