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TPS54377RHFT Datasheet(PDF) 1 Page - Texas Instruments |
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TPS54377RHFT Datasheet(HTML) 1 Page - Texas Instruments |
1 / 21 page 1 FEATURES DESCRIPTION APPLICATIONS VIN PH BOOT PGND VSENSE Output COMP AGND VBIAS Input TPS54377 * * * Optional START-UP WAVEFORM Simplified Schematic 5.0 ms/div VO = 1.8 V VI = 3.3 V RL = 1 Ω RT SYNC SS/ENA PWRGD TPS54377 SLVS779 – SEPTEMBER 2007 www.ti.com 1.6 MHz, 3-V TO 6-V INPUT, 3-A SYNCHRONOUS STEP-DOWN SWIFT™ CONVERTER WITH DISABLED SINKING DURING START-UP 2 • 60-mΩ MOSFET Switches for High Efficiency at 3-A Continuous Output Current As a member of the SWIFT™ family of dc/dc regulators, the TPS54377 low-input-voltage • Adjustable Output Voltage Down to 0.9 V With high-output-current synchronous-buck PWM 1% Accuracy converter integrates all required active components. • Switching Frequency: Adjustable From Included on the substrate with the listed features are 280 kHz to 1600 kHz a true, high performance, voltage error amplifier that • Disabled Current Sinking During Start-Up provides high performance under transient conditions; an undervoltage-lockout circuit to prevent start-up • Fast Transient Response until the input voltage reaches 3 V; an internally and • Load Protected by Peak Current Limit and externally set slow-start circuit to limit in-rush Thermal Shutdown currents; and a power good output useful for • Integrated Solution Reduces Board Area and processor/logic reset, fault signaling, and supply Total Cost sequencing. • Spacing Saving 4mm x 5mm QFN Packaging For reliable power up in output precharge applications, the TPS54377 is designed to only • For SWIFT Documentation, Application Notes, source current during start-up. and Design Software, see the TI website at www.ti.com/swift 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 • Low-Voltage, High-Density Systems With tool to aid in achieving high-performance power Power Distributed at 5 V or 3.3 V supply designs to meet aggressive equipment • Point of Load Regulation for High development cycles. Performance DSPs, FPGAs, ASICs, and Microprocessors • Broadband, Networking and Optical Communications Infrastructure 1 Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. 2 SWIFT, PowerPAD are trademarks of Texas Instruments. PRODUCTION DATA information is current as of publication date. Copyright © 2007, Texas Instruments Incorporated Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. |
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