TPS54377数据手册集成电路（IC）的稳压器-DC-DC开关稳压器规格书PDF

描述 Description

As a member of the SWIFT™ family of dc/dc regulators, the TPS54377 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 provides high performance under transient conditions; an undervoltage-lockout circuit to prevent start-up until the input voltage reaches 3 V; an internally and externally set slow-start circuit to limit in-rush 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 TPS54377 is designed to only source current during start-up.
The TPS54377 device is available in a thermally enhanced 24-pin QFN (RHF) PowerPAD package, which eliminates bulky heatsinks. TI provides evaluation modules and the SWIFT designer software tool to aid in achieving high-performance power supply designs to meet aggressive equipment development cycles.

特性 Features

·60-m MOSFET Switches for High Efficiency at 3-A Continuous Output Current
·Adjustable Output Voltage Down to 0.9 V With 1% Accuracy
·Switching Frequency: Adjustable From 280 kHz to 1600 kHz
·Disabled Current Sinking During Start-Up
·Fast Transient Response
·Load Protected by Peak Current Limit and Thermal Shutdown
·Integrated Solution Reduces Board Area and Total Cost
·Spacing Saving 4mm x 5mm QFN Packaging
·For SWIFT Documentation, Application Notes, and Design Software, see the TI website at www.ti.com/swift
·APPLICATIONS·Low-Voltage, High-Density Systems With Power Distributed at 5 V or 3.3 V
·Point of Load Regulation for High Performance DSPs, FPGAs, ASICs, and Microprocessors
·Broadband, Networking and Optical Communications Infrastructure

SWIFT, PowerPAD are trademarks of Texas Instruments.