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TPS5431DDA Datasheet(PDF) 1 Page - Texas Instruments |
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TPS5431DDA Datasheet(HTML) 1 Page - Texas Instruments |
1 / 32 page VIN NC NC ENA GND VSENSE BOOT PH TPS5430/31 VIN VOUT 95 60 70 80 90 100 0 0.5 1 1.5 2.5 3 3.5 I OutputCurrent A O - - EfficiencyvsOutputCurrent SimplifiedSchematic V I =12V V =5V f =500kHz T =25 C O s A o 2 50 55 65 75 85 TPS5430 TPS5431 www.ti.com SLVS632E – JANUARY 2006 – REVISED SEPTEMBER 2013 3-A, WIDE INPUT RANGE, STEP-DOWN CONVERTER Check for Samples: TPS5430 , TPS5431 1 FEATURES DESCRIPTION 2 • Wide Input Voltage Range: The TPS5430/TPS5431 is a high-output-current – TPS5430: 5.5 V to 36 V PWM converter that integrates a low resistance high – TPS5431: 5.5 V to 23 V side N-channel MOSFET. Included on the substrate with the listed features are a high performance • Up to 3-A Continuous (4-A Peak) Output voltage error amplifier that provides tight voltage Current regulation accuracy under transient conditions; an • High Efficiency up to 95% Enabled by 110-m Ω undervoltage-lockout circuit to prevent start-up until Integrated MOSFET Switch the input voltage reaches 5.5 V; an internally set • Wide Output Voltage Range: Adjustable Down slow-start circuit to limit inrush currents; and a voltage to 1.22 V with 1.5% Initial Accuracy feed-forward circuit to improve the transient response. Using the ENA pin, shutdown supply • Internal Compensation Minimizes External current is reduced to 18 μA typically. Other features Parts Count include an active-high enable, overcurrent limiting, • Fixed 500 kHz Switching Frequency for Small overvoltage protection and thermal shutdown. To Filter Size reduce design complexity and external component count, the TPS5430/TPS5431 feedback loop is • Improved Line Regulation and Transient internally compensated. The TPS5431 is intended to Response by Input Voltage Feed Forward operate from power rails up to 23 V. The TPS5430 • System Protected by Overcurrent Limiting, regulates a wide variety of power sources including Overvoltage Protection and Thermal Shutdown 24-V bus. • –40°C to 125°C Operating Junction The TPS5430/TPS5431 device is available in a Temperature Range thermally enhanced, easy to use 8-pin SOIC • Available in Small Thermally Enhanced 8-Pin PowerPAD™ package. TI provides evaluation SOIC PowerPAD™ Package modules and the Designer software tool to aid in quickly achieving high-performance power supply designs to meet aggressive equipment development APPLICATIONS cycles. • Consumer: Set-top Box, DVD, LCD Displays • Industrial and Car Audio Power Supplies • Battery Chargers, High Power LED Supply • 12-V/24-V Distributed Power Systems 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 PowerPAD is a trademark of Texas Instruments. PRODUCTION DATA information is current as of publication date. Copyright © 2006–2013, 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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