TPS54339E

TPS54339E www.ti.com SLVSBM0A – DECEMBER 2012 – REVISED DECEMBER 2012 4.5V to 23V Input, 3-A Synchronous Step-Down SWIFT™ Converter with Eco-Mode™ Check for Samples: TPS54339E FEATURES 1 23 D-CAP2™ Mode Enables Fast Transient Response Low Output Ripple and Allows Ceramic Output Capacitor Wide VIN Input Voltage Range: 4.5 V to 23 V Output Voltage Range: 0.76 V to 7.0 V Highly Efficient Integrated FETs Optimized for Lower Duty Cycle Applications – 140 mΩ (High Side) and 70 mΩ (Low Side) High Efficiency, less than 10 μA at shutdown High Initial Bandgap Reference Accuracy Adjustable Soft Start Pre-Biased Soft Start 600-kHz Switching Frequency (fSW) Cycle By Cycle Over Current Limit Auto-Skip Eco-mode™ for High Efficiency at Light Load APPLICATIONS Wide Range of Applications for Low Voltage System – Digital TV Power Supply – High Definition Blu-ray Disc™ Players – Networking Home Terminal – Digital Set Top Box (STB) DESCRIPTION The TPS54339E is an adaptive on-time D-CAP2™ mode synchronous buck converter. The TPS54339E enables system designers to complete the suite of various end-equipment power bus regulators with a cost effective, low component count, low standby current solution. The main control loop for the TPS54339E uses the D-CAP2™ mode control that provides a fast transient response with no external compensation components. The adaptive on-time control supports seamless transition between PWM mode at higher load conditions and Eco-mode™ operati...