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TPS54810PWPRG4 데이터시트(PDF) 1 Page - Texas Instruments |
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TPS54810PWPRG4 데이터시트(HTML) 1 Page - Texas Instruments |
1 / 22 page TPS54810 SLVS420B − MARCH 2002 − R EVISED FEBRUARY 2005 4-V TO 6-V INPUT, 8-A OUTPUT SYNCHRONOUS BUCK PWM SWITCHER WITH INTEGRATED FETS (SWIFT ™) 6,4 mm X 9,7 mm FEATURES D 30-mΩ MOSFET Switches for High Efficiency at 8-A Continuous Output D 0.9-V to 3.3-V Adjustable Output Voltage Range With 1% Accuracy D Externally Compensated D Fast Transient Response D Wide PWM Frequency: Fixed 350 kHz, 550 kHz or Adjustable 280 kHz to 700 kHz D Load Protected by Peak Current Limit and Thermal Shutdown D Integrated Solution Reduces Board Area and Total Cost APPLICATIONS D Low-Voltage, High-Density Systems With Power Distributed at 5 V D Point of Load Regulation for High Performance DSPs, FPGAs, ASICs and Microprocessors D Broadband, Networking, and Optical Communications Infrastructure D Portable Computing/Notebook PCs DESCRIPTION As a member of the SWIFT™ family of dc/dc regulators, the TPS54810 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 under transient conditions 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 3.8 V; an internally or 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 TPS54810 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. VSENSE VIN PH BOOT PGND Output COMP AGND VBIAS Input TPS54810 SIMPLIFIED SCHEMATIC VSENSE Compensation Network IL − Load Current − A EFFICIENCY AT 700 HZ 50 55 60 65 70 75 80 85 90 95 100 01 234 5 6 7 8 9 10 VI = 5 V VO = 3.3 V 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. www.ti.com PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. Copyright © 2002, Texas Instruments Incorporated PowerPAD and SWIFT are trademarks of Texas Instruments. |
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