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TPS5420-Q1 Datasheet(PDF) 1 Page - Texas Instruments |
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TPS5420-Q1 Datasheet(HTML) 1 Page - Texas Instruments |
1 / 22 page 1 FEATURES APPLICATIONS DESCRIPTION VIN NC NC ENA GND VSENSE BOOT PH TPS5420 VIN VOUT 95 60 70 80 90 100 0 0.5 1 1.5 2.5 3 I OutputCurrent A O - - EfficiencyvsOutputCurrent SimplifiedSchematic 2 50 55 65 75 85 V I =12V TPS5420-Q1 www.ti.com................................................................................................................................................... SLVS752B – NOVEMBER 2007 – REVISED JUNE 2008 2-A WIDE-INPUT-RANGE STEP-DOWN SWIFT™ CONVERTER • Industrial and Car Audio Power Supplies 2 • Qualified for Automotive Applications • Battery Chargers, High-Power LED Supplies • Wide Input Voltage Range: 5.5 V to 36 V • 12-V/24-V Distributed Power Systems • Up to 2-A Continuous (3-A Peak) Output Current • High Efficiency up to 95% Enabled by 110-mΩ As a member of the SWIFT family of dc/dc regulators, Integrated MOSFET Switch the TPS5420 is a high-output-current PWM converter • Wide Output Voltage Range: Adjustable Down that integrates a low-resistance high-side N-channel to 1.22 V With 1.5% Initial Accuracy MOSFET. Included on the substrate with the listed • Internal Compensation Minimizes External features is a high-performance voltage error amplifier Parts Count that provides tight voltage regulation accuracy under transient conditions, an undervoltage-lockout circuit to • Fixed 500-kHz Switching Frequency for Small prevent start-up until the input voltage reaches 5.5 V, Filter Size an internally set slow-start circuit to limit inrush • Improved Line Regulation and Transient currents, and a voltage feed-forward circuit to Response by Input Voltage Feed Forward improve the transient response. Using the ENA pin, • System Protected by Over Current Limiting, shutdown supply current is reduced to 18 µA typically. Other features include an active-high Over Voltage Protection, and Thermal enable, overcurrent limiting, overvoltage protection, Shutdown and thermal shutdown. To reduce design complexity • –40°C to 125°C Operating Junction and external component count, the TPS5420 Temperature Range feedback loop is internally compensated. • Available in Small 8-Pin SOIC Package The TPS5420 device is available in an easy-to-use • For SWIFT™ Documentation, Application 8-pin SOIC package. TI provides evaluation modules Notes and Design Software, See the TI Website and the SWIFT Designer software tool to aid in at www.ti.com/swift quickly achieving high-performance power supply designs to meet aggressive equipment development cycles. 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 is a trademark of Texas Instruments. PRODUCTION DATA information is current as of publication date. Copyright © 2007–2008, 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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