TPS54231DR ,3.5 to 28V Input, 2A, 570kHz Step-Down Converter with Eco-mode? 8-SOIC -40 to 150www.TI.com/WEBENCH)performance.(1)2 Applications Device InformationPART NUMBER PACKAGE BODY SIZE (N ..
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TPS54240DGQ ,3.5V to 42V Input, 2.5A Step-Down Converter with Eco-Mode 10-MSOP-PowerPAD -40 to 125Features 3 DescriptionThe TPS54240 device is a 42-V, 2.5-A, step-down1• 3.5-V to 42-V Input Voltage ..
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TPS54231-TPS54231D-TPS54231DG4-TPS54231DR-TPS54231DRG4
Sample & Support & Product Tools & Technical Community Buy Folder Documents Software 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 R high-side DS(on) • Adjustable Output Voltage Down to 0.8 V MOSFET. To increase efficiency at light loads, a • Integrated 80-mΩ 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./WEBENCH) performance. (1) 2 Applications Device Information 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 Ren1 Efficiency EN VIN VIN Ren2 100 C I 90 TPS54231 80 C BOOT BOOT V = 12 V 70 I L O V = 18 V I VOUT 60 PH V = 24 V I SS V = 28 V 50 I C D1 O R O1 COMP V = 5 V I 40 C 1 C 30 SS C 2 VSENSE 20 R 3 GND R 10 O2 V = 3.3 V O 0 0.01 0.1 1 10 I - Load Current - A L 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. Efficiency - %
