TPS54873中文资料适用于预偏置输出的 4.5V 至 5.5V 输入、8A SWIFT™ 同步降压转换器数据手册TI规格书

描述 Description

As a member of the SWIFT™ family of dc/dc regulators, family of dc/dc regulators,the TPS54873 low-input voltage high-output current synchronous buck PWM converter integrates all required active components. Included on the substrate with the listed features are a true, high performance, voltage error amplifier that enables maximum performance and flexibility in choosing the output filter L and C components; an under-voltage-lockout circuit to prevent start-up until the input voltage reaches 4 V; an internally or externally set slow-start circuit to limit inrush currents; and a power good output useful for processor/logic reset, fault signaling, and supply sequencing.

For reliable power up in output precharge applications, the TPS54873 is designed to only source current during startup.

The TPS54873 is available in a thermally enhanced 28-pin TSSOP (PWP) PowerPAD™ package, which eliminates bulky heatsinks. TI provides evaluation modules and the SWIFT™ designer software tool to aid in quickly achieving high-performance power supply designs to meet aggressive equipment development cycles.

特性 Features

• 30-m, 12-A Peak MOSFET Switches for High Efficiency at 8-A Continuous Output Source or Sink Current
• 0.9-V to 3.3-V Adjustable Output Voltage Range With 1.0% Accuracy
• Synchronizable to 700 kHz
• Integrated Solution Reduces Board Area and Component Count
• Low-Voltage, High-Density Distributed Power Systems
• Broadband, Networking and Optical Communications Infrastructure
• Power PC Series Processors

PowerPAD and SWIFT are trademarks of Texas Instruments.