TPS54140DGQR ,3.5V to 42V Input, 1.5A Step-Down Converter with Eco-Mode 10-MSOP-PowerPAD -40 to 150Features Item From: 300kHz to 2.5MHz Switching Frequency To: 100kHz to 2.5MHz Switching Frequency.. ..
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TPS54160DGQR. ,3.5V to 60V Input, 1.5A Step-Down Converter with Eco-Mode 10-MSOP-PowerPAD -40 to 150Block Diagram... 135 Revision HistoryNOTE: Page numbers for previous revisions may differ from page ..
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TPS54140DGQ-TPS54140DGQR
3.5V to 42V Input, 1.5A Step-Down Converter with Eco-Mode
Sample & Support & Reference Product Tools & Technical Community Buy Design Folder Documents Software TPS54140 SLVS889C – OCTOBER 2008 – REVISED NOVEMBER 2014 TPS54140 1.5-A, 42-V Step-Down DC-DC Converter With Eco-mode™ 1 Features 3 Description The TPS54140 device is a 42-V, 1.5-A, step-down 1• 3.5- to 42-V Input Voltage Range regulator with an integrated high-side MOSFET. • 200-mΩ High-Side MOSFET Current mode control provides simple external • High Efficiency at Light Loads with a Pulse compensation and flexible component selection. A Skipping Eco-mode™ low-ripple pulse-skip mode reduces the no load, regulated output-supply current to 116μA. Using the • 116-μA Operating Quiescent Current enable pin, the shutdown supply current is reduced to • 1.3-μA Shutdown Current 1.3μA. • 100-kHz to 2.5-MHz Switching Frequency Undervoltage lockout is internally set at 2.5 V, but • Synchronizes to External Clock can be increased using the enable pin. The output- • Adjustable Slow Start and Sequencing voltage startup ramp is controlled by the slow-start pin that can also be configured for sequencing and • UV and OV Power-Good Output tracking. An open-drain power-good signal indicates • Adjustable UVLO Voltage and Hysteresis the output is within 94% to 107% of the nominal • 0.8-V Internal Voltage Reference voltage. • MSOP10 Package With PowerPAD™ A wide switching frequency range allows efficiency ® • Supported by WEBENCH Software Tool and external component size to be optimized. (www./WEBENCH) Frequency foldback and thermal shutdown protects the device during an overload condition. 2 Applications The TPS54140 device is available in a 10-pin • 12-V and 24-V Industrial and Commercial Low thermally enhanced MSOP PowerPAD package. Power Systems (1) Device Information • Aftermarket Auto Accessories: Video, GPS, PART NUMBER PACKAGE BODY SIZE (NOM) Entertainment TPS54140 MSOP (10) 3.00 mm × 3.00 mm (1) For all available packages, see the orderable addendum at the end of the datasheet. 4 Simplified Schematic Efficiency vs Load Current VIN PWRGD 90 TPS54140 85 80 EN BOOT 75 PH 70 SS/TR RT/CLK 65 COMP V = 12 V, 60 I VSENSE V = 3.3 V, O 55 f = 1200 kHz sw GND 50 0 0.25 0.50 0.75 1 1.25 1.50 1.75 2 Load Current - A 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 - %
