LM20154

LM20154 www.ti.com SNVS531G – OCTOBER 2007 – REVISED MARCH 2013 LM20154/LM20154-Q1 4A, 1MHz Synchronous Buck Regulator with SYNCOUT Check for Samples: LM20154 FEATURES 1 2 LM20154-Q1 is AEC-Q100 Qualified and Manufactured on an Automotive Grade Flow Input Voltage Range 2.95V to 5.5V Accurate Current Limit Minimizes Inductor Size 96% Peak Efficiency at 1.0 MHz Switching Frequency Frequency Synchronization Output 32 mΩ Integrated FET Switches Starts up into Pre-Biased Loads Output Voltage Tracking Peak Current Mode Control Adjustable Output Voltage Down to 0.8V Adjustable Soft-Start with External Capacitor Precision Enable Pin with Hysteresis Integrated OVP, UVLO, Power Good and Thermal Shutdown HTSSOP Exposed Pad Package APPLICATIONS Simple to Design, High Efficiency Point of Load Regulation from a 5V or 3.3V Bus High Performance DSPs, FPGAs, ASICs and Microprocessors Broadband, Networking and Optical Communications Infrastructure DESCRIPTION The LM20154 is a full featured 1 MHz synchronous buck regulator capable of delivering up to 4A of continuous output current. The current mode control loop can be compensated to be stable with virtually any type of output capacitor. For most cases, compensating the device only requires two external components, providing maximum flexibility and ease of use. The device is optimized to work over the input voltage range of 2.95V to 5.5V making it suited for a wide variety of low voltage systems. The device...