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TPS54331D Datasheet(PDF) 1 Page - Texas Instruments |
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TPS54331D Datasheet(HTML) 1 Page - Texas Instruments |
1 / 24 page 1 FEATURES DESCRIPTION APPLICATIONS 0 10 20 30 40 50 60 70 80 90 100 0.01 0.1 1 10 I -LoadCurrent- A L V =3.3V O V =12V I V =18V I V =24V I V =28V I V =5V I PH VIN GND BOOT VSENSE COMP SS C SS D1 VIN VOUT EN TPS54331 C I C BOOT L O C O Ren1 R O2 C 1 C 2 R 3 Ren2 R O1 TPS54331 www.ti.com ...................................................................................................................................................... SLVS839B – JULY 2008 – REVISED OCTOBER 2008 3A, 28V INPUT, STEP DOWN SWIFT™ DC/DC CONVERTER WITH ECO-MODE™ 2 • 3.5V to 28V Input Voltage Range • Adjustable Output Voltage Down to 0.8V The TPS54331 is a 28-V, 3-A non-synchronous buck converter that integrates a low Rds(on) high side • Integrated 80 mΩ High Side MOSFET Supports MOSFET. To increase efficiency at light loads, a up to 3A Continuous Output Current pulse skipping Eco-mode™ feature is automatically • High Efficiency at Light Loads with a Pulse activated. Furthermore, the 1 µA shutdown supply Skipping Eco-mode™ current allows the device to be used in battery powered applications. Current mode control with • Fixed 570kHz Switching Frequency internal slope compensation simplifies the external • Typical 1µA Shutdown Quiescent Current compensation calculations and reduces component • Adjustable Slow Start Limits Inrush Currents count while allowing the use of ceramic output capacitors. A resistor divider programs the hysteresis • Programmable UVLO Threshold of the input under-voltage lockout. An overvoltage • Overvoltage Transient Protection transient protection circuit limits voltage overshoots • Cycle by Cycle Current Limit, Frequency Fold during startup and transient conditions. A cycle by Back and Thermal Shutdown Protection cycle current limit scheme, frequency fold back and thermal shutdown protect the device and the load in • Available in Easy-to-Use SOIC8 Package the event of an overload condition. The TPS54331 is • Supported by SwitcherPro™ Software Tool available in an 8-pin SOIC package that has been (http://focus.ti.com/docs/toolsw/folders/print/s internally optimized to improve thermal performance. witcherpro.html) • For SWIFT™ Documentation, See the TI Website at www.ti.com/swift • Consumer Applications such as Set-Top Boxes, CPE Equipment, LCD Displays, Peripherals, and Battery Chargers • Industrial and Car Audio Power Supplies • 5V, 12V and 24V Distributed Power Systems SIMPLIFIED SCHEMATIC EFFICIENCY 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, Eco-mode, SwitcherPro are trademarks of Texas Instruments. PRODUCTION DATA information is current as of publication date. Copyright © 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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