TPS54339EDDA

4.5V至23V输入， 3 -A同步降压SWIFT转换器具有Eco-Mode 4.5V to 23V Input, 3-A Synchronous Step-Down SWIFT Converter with Eco-Mode

DESCRIPON

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™ operation at light loads. Eco-mode™ allows the TPS54339E to maintain high efficiency during lighter load conditions. The TPS54339E also has a proprietary circuit that enables the device to adopt to both low equivalent series resistance ESR output capacitors, such as POSCAP or SP-CAP, and ultra-low ESR ceramic capacitors.

FEATURES

• 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