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SN0401093 Datasheet(PDF) 1 Page - Texas Instruments |
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SN0401093 Datasheet(HTML) 1 Page - Texas Instruments |
1 / 13 page SN0401093 DUAL INPUT BUS 9A OUTPUT SYNCHRONOUS BUCK PWM SWITCHER WITH INTEGRATED FETs (SWIFT) 6,4 mm X 9,7 mm Typical Size SLVS523− OCTOBER 2004 FEATURES D Low Voltage Separate Power Bus D 15-mΩ MOSFET Switches for High Efficiency at 9-A Continuous Output D Adjustable Output Voltage D Externally Compensated With 1% Internal Reference Accuracy D Fast Transient Response D Wide PWM Frequency: Adjustable 280 kHz to 700 kHz D Load Protected at Thermal Shutdown D Integrated Solution Reduces Board Area and Total Cost APPLICATIONS D Low-Voltage, High-Density Systems With Power Distribution at 1.0 V D Point of Load Regulation for High Performance DSPs, FPGAs, ASICs and Microprocessors D Broadband, Networking and Optical Communications Infrastructure DESCRIPTION As a member of the SWIFT family of dc/dc regulators, the SN0401093 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 VIN 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 SN0401093 is available in a thermally enhanced 28-pin TSSOP (PWP) PowerPAD package, which eliminates bulky heatsinks. SIMPLIFIED SCHEMATIC PVIN PH BOOT PGND VSENSE Output AGND VBIAS Input1 SN0401093 SIMPLIFIED SCHEMATIC COMP Compensation Network VIN 3.3 V 50 55 60 65 70 75 80 85 90 95 100 0 1 2345 67 8 9 10 IO − Output Current − A EFFICIENCY vs OUTPUT CURRENT VIN = 3.3 V, PVIN = 2.5 V, VO = 1.8 V, fs= 700 kHz Input2 PowerPAD and SWIFT are trademarks of Texas Instruments. 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 2004, Texas Instruments Incorporated |
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