TPS5420-Q1

TPS5420-Q1 www.ti.com................................................................................................................................................... SLVS752B – NOVEMBER 2007 – REVISED JUNE 2008 2-A WIDE-INPUT-RANGE STEP-DOWN SWIFT™ CONVERTER FEATURES 1 2 Qualified for Automotive Applications Wide Input Voltage Range: 5.5 V to 36 V Up to 2-A Continuous (3-A Peak) Output Current High Efficiency up to 95% Enabled by 110-mΩ Integrated MOSFET Switch Wide Output Voltage Range: Adjustable Down to 1.22 V With 1.5% Initial Accuracy Internal Compensation Minimizes External Parts Count Fixed 500-kHz Switching Frequency for Small Filter Size Improved Line Regulation and Transient Response by Input Voltage Feed Forward System Protected by Over Current Limiting, Over Voltage Protection, and Thermal Shutdown –40°C to 125°C Operating Junction Temperature Range Available in Small 8-Pin SOIC Package For SWIFT™ Documentation, Application Notes and Design Software, See the TI Website at www.ti.com/swift APPLICATIONS Industrial and Car Audio Power Supplies Battery Chargers, High-Power LED Supplies 12-V/24-V Distributed Power Systems DESCRIPTION As a member of the SWIFT family of dc/dc regulators, the TPS5420 is a high-output-current PWM converter that integrates a low-resistance high-side N-channel MOSFET. Included on the substrate with the listed features is a high-performance voltage error amplifier that provides tight voltage regulation accur...