TPS5405

TPS5405 www.ti.com SLVSBF7B – MAY 2012 – REVISED APRIL 2013 6.5-V TO 28-V INPUT VOLTAGE, 5-V FIXED OUTPUT, 2-A OUTPUT CURRENT, NON-SYNCHRONOUS STEP-DOWN REGULATOR WITH INTEGRATED MOSFET Check for Samples: TPS5405 FEATURES 1 Fixed 5-V Output 6.5-V to 28-V Wide Input Voltage Range Up to 2-A Maximum Continuous Output Loading Current Pulse Skipping Mode to Achieve High Light Load Efficiency Over 80% Efficiency at 10-mA Loading Adjustable 50-kHz to 1.1-MHz Switching Frequency Set by an External Resistor (Leave pin ROSC floating. Set frequency to 120 kHz) Peak Current-Mode Control Cycle-by-Cycle Over Current Protection Switching Node Anti-Ringing to Ease EMI Issue External Soft Start Available in SOIC8 Package APPLICATIONS 9-V, 12-V and 24-V Distributed Power Systems Consumer Applications Such as Home Appliances, Set-Top Boxes, CPE Equipment, LCD Displays, Peripherals, and Battery Chargers Industrial and Car Entertainment Power Supplies DESCRIPTION The TPS5405 is a monolithic non-synchronous buck regulator with wide operating input voltage range from 6.5 V to 28 V. Current mode control with internal slope compensation is implemented to reduce component count. TPS5405 also features a light load pulse skipping mode, which allows for a power loss reduction from the input power supply to the system at light loading. The switching frequency of the converters can be set from 50 kHz to 1.1 MHz with an external resistor. Frequency spread spectrum operation...