TPS54339
www.ti.com
SLVSBT2 – JANUARY 2013
4.5 V to 23 V Input, 3-A Synchronous Step-Down SWIFT™ Converter
Check for ...
TPS54339
www.ti.com
SLVSBT2 – JANUARY 2013
4.5 V to 23 V Input, 3-A Synchronous Step-Down SWIFT™ Converter
Check for Samples: TPS54339
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 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
DESCRIPTION
The TPS54339 is an adaptive on-time D-CAP2™ mode synchronous buck converter. The TPS54339 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 TPS54339 uses the D-CAP2™ mode control that provides a fast transient response with no external compensation components. The TPS54339 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 ultralow ESR ceramic
capacitors. The device operates from 4.5-V to 23-V VIN input. The output
voltage can be programmed between 0.76 V and 7 V. The device also features an adjustable soft start time. The TPS54339 is available in the 8-pi...