TPS54380-Q1

www.ti.com Typical Size 6,4 mm X 6,6 mm TPS54380-Q1 SLVS836 − JUNE 2008 3-V TO 6-V INPUT, 3-A OUTPUT TRACKING SYNCHRONOUS BUCK PWM SWITCHER WITH INTEGRATED FETs (SWIFT) FOR SEQUENCING FEATURES D Qualified for Automotive Applications D Power-Up/Down Tracking for Sequencing D 60-mΩ MOSFET Switches for High Efficiency at 3-A Continuous Output Source or Sink Current D Wide PWM Frequency: Fixed 350 kHz or Adjustable 280 kHz to 700 kHz D Power Good and Enable D Load Protected by Peak Current Limit and Thermal Shutdown D Integrated Solution Reduces Board Area and Component Count APPLICATIONS D Low-Voltage, High-Density Distributed Power Systems D Point of Load Regulation for High-Performance DSPs, FPGAs, ASICs, and Microprocessors Requiring Sequencing D Broadband, Networking, and Optical Communications Infrastructure DESCRIPTION As a member of the SWIFT family of dc/dc regulators, the TPS54380 low-input voltage, high-output current, synchronous buck PWM converter integrates all required active components. Using the TRACKIN pin with other regulators, simultaneous power up and down are easily implemented. Included on the substrate with the listed features are a true, high-performance, voltage error amplifier that enables maximum performance and flexibility in choosing the output filter L and C components; an undervoltage-lockout circuit to prevent start-up until the input voltage reaches 3 V; an internally or externally set slow-start circuit to limit inrush currents; and a pow...