●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™ 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)
