TPS54617 Datasheet | Texas Instruments

Typical Size 3,5 mm x 7 mm .ti. ........................................................................................................................................... SLVS880A - NOVEMBER 2008 - REVISED JANUARY 2009 3-V TO 6-V INPUT, 6-A, SMALL SYNCHRONOUS-BUCK SWITCHER WITH INTEGRATED FETs (SWIFT™) Features - 23 30-mΩ MOSFET Switches for High Efficiency at 6-A Continuous Output - Adjustable Output Voltage Down to 0.9 V With 1% Accuracy - Externally pensated for Design Flexibility - Wide PWM Frequency: Fixed 350 k Hz, 550 k Hz, or Adjustable 280 k Hz to 1.6 MHz - Synchronizable to 1.6MHz - Load Protected by Peak Current Limit and Thermal Shutdown - Small 3.5mm x 7mm Package and Similar Layout to TPS54610 Reduces Board Area and Total Cost - SWIFT Documentation Application Notes, and Switcher Pro™ Software: .ti./swift APPLICATIONS - Low-Voltage, High-Density Systems With Power Distributed at 3.3 V or 5 V - Point of Load Regulation for High Performance DSPs, FPGAs, ASICs, and Microprocessors - Broadband, Networking and Optical munications Infrastructure DESCRIPTION As a member of the SWIFT™ family of dc/dc regulators, the TPS54617 low-input voltage high-output current synchronous buck PWM converter offers the same Features as the TPS54610 in a small package and higher switching frequency. Included on the substrate with the listed Features are a true, high performance, voltage error amplifier that enables maximum performance under transient conditions and flexibility in choosing the output filter L and C ponents; 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. The TPS54617 is available in a thermally enhanced 34 pin QFN (RUV) Power PAD™ package, which eliminates bulky heatsinks. TI provides evaluation modules and the...