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TPS54231 Datasheet(PDF) 1 Page - Texas Instruments |
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TPS54231 Datasheet(HTML) 1 Page - Texas Instruments |
1 / 31 page 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 TPS54231 C I C BOOT L O C O Ren1 R O2 C 1 C 2 R 3 Ren2 R O1 Product Folder Sample & Buy Technical Documents Tools & Software Support & Community TPS54231 SLUS851D – OCTOBER 2008 – REVISED OCTOBER 2014 TPS54231 2-A, 28-V Input, Step-Down DC-DC Converter With Eco-mode™ 1 Features 3 Description The TPS54231 device is a 2-V, 2-A non-synchronous 1 • 3.5- to 28-V Input Voltage Range buck converter that integrates a low RDS(on) high-side • Adjustable Output Voltage Down to 0.8 V MOSFET. To increase efficiency at light loads, a • Integrated 80-m Ω High-Side MOSFET Supports pulse skipping Eco-mode™ feature is automatically up to 2 A Continuous Output Current activated. Furthermore, the 1- μA shutdown supply current allows the device to be used in battery • High Efficiency at Light Loads with a Pulse powered applications. Current mode control with Skipping Eco-mode™ internal slope compensation simplifies the external • Fixed 570-kHz Switching Frequency compensation calculations and reduces component • Typical 1- μA Shutdown Quiescent Current count while allowing the use of ceramic output capacitors. A resistor divider programs the hysteresis • Adjustable Slow-Start Limits Inrush Currents of the input undervoltage lockout. An overvoltage • Programmable UVLO Threshold transient protection circuit limits voltage overshoots • Overvoltage Transient Protection during startup and transient conditions. A cycle-by- cycle current limit scheme, frequency fold back and • Cycle-by-Cycle Current Limit, Frequency Fold thermal shutdown protect the device and the load in Back and Thermal Shutdown Protection the event of an overload condition. The TPS54231 • Available in Easy-to-Use SOIC8 Package device is available in an 8-pin SOIC package that has • Supported by WEBENCH® Software Tool been internally optimized to improve thermal (www.TI.com/WEBENCH) performance. Device Information(1) 2 Applications PART NUMBER PACKAGE BODY SIZE (NOM) • Consumer Applications such as Set-Top Boxes, TPS54231 SOIC (8) 4.90 mm × 3.90 mm CPE Equipment, LCD Displays, Peripherals, and Battery Chargers (1) For all available packages, see the orderable addendum at the end of the datasheet. • Industrial and Car Audio Power Supplies • 5-V, 12-V and 24-V Distributed Power Systems 4 Simplified Schematic Efficiency 1 An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, intellectual property matters and other important disclaimers. PRODUCTION DATA. |
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Similar Description - TPS54231_15 |
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