器件名称: TPS54332
功能描述: DC/DC降压芯片
文件大小: 1109.8KB 共26页
简 介:TPS54332
www.ti.com SLVS875B – JANUARY 2009 – REVISED FEBRUARY 2012
3.5A, 28V, 1MHz, STEP DOWN DC/DC CONVERTER WITH Eco-mode
Check for Samples: TPS54332
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FEATURES
3.5V to 28V Input Voltage Range Adjustable Output Voltage Down to 0.8V Integrated 80 m High Side MOSFET Supports up to 3.5A Continuous Output Current High Efficiency at Light Loads with a Pulse Skipping Eco-mode Fixed 1MHz Switching Frequency Typical 1μA Shutdown Quiescent Current Adjustable Slow Start Limits Inrush Currents Programmable UVLO Threshold Overvoltage Transient Protection Cycle by Cycle Current Limit, Frequency Fold Back and Thermal Shutdown Protection Available in Thermally Enhanced 8-Pin SOIC PowerPAD Package Supported by SwitcherPro Software Tool (http://focus.ti.com/docs/toolsw/folders/print/s witcherpro.html)
APPLICATIONS
Consumer Applications such as Set-Top Boxes, CPE Equipment, LCD Displays, Peripherals, and Battery Chargers Industrial and Car Audio Power Supplies 5V, 12V and 24V Distributed Power Systems
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DESCRIPTION
The TPS54332 is a 28 V, 3.5 A non-synchronous buck converter that integrates a low RDS(on) high side MOSFET. To increase efficiency at light loads, a pulse skipping Eco-mode feature is automatically activated. Furthermore, the 1 μA shutdown supply current allows the device to be used in battery powered applications. Current mode control with internal slope compensation simplifies the external compensation calculations and reduces component count while allowi……
