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TPS54040ADGQ Datasheet(PDF) 1 Page - Texas Instruments |
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TPS54040ADGQ Datasheet(HTML) 1 Page - Texas Instruments |
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1 / 53 page  0 10 20 30 40 50 60 70 80 0 0.1 0.2 0.3 0.4 Load Current - A 100 90 0.5 V = 12 V, V = 5.0 V, f = 700 kHz I O sw PH VIN GND BOOT VSENSE COMP TPS54040A EN RT /CLK SS /TR PWRGD V IN VIN V OUT Product Folder Sample & Buy Technical Documents Tools & Software Support & Community TPS54040A SLVSB58B – MARCH 2012 – REVISED JANUARY 2016 TPS54040A 0.5-A, 42-V Step-Down DC-DC Converter With Eco-Mode™ 1 Features 3 Description The TPS54040A device is a 42 V, 0.5 A, step down 1 • 3.5 V to 42 V Input Voltage Range regulator with an integrated high side MOSFET. • 200-m Ω 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 input supply current to 116 μA. Using the • Tighter Enable Threshold than TPS54040 enable pin, shutdown supply current is nominally 1.3 for More Accurate UVLO Voltage μA when the enable pin is low. • Adjustable UVLO Voltage and Hysteresis Under voltage lockout is internally set at 2.5 V, but • 116 μA Operating Quiescent Current can be increased using the enable pin. The output • 1.3 μA Shutdown Current voltage startup ramp is controlled by the slow start • 100 kHz to 2.5 MHz Switching Frequency pin that can also be configured for sequencing or tracking. An open drain power good signal indicates • Synchronizes to External Clock when the output is within 94% to 107% of its nominal • Adjustable Slow Start/Sequencing voltage. • UV and OV Power Good Output A wide switching frequency range allows efficiency • 0.8-V Internal Voltage Reference and external component size to be optimized. • Available in MSOP-10 and VSON-10 Packages Frequency fold back and thermal shutdown protects the part during an overload condition. • Supported by WEBENCH® and SwitcherPro™ Software Tool Device Information(1) PART NUMBER PACKAGE BODY SIZE (NOM) MSOP-PowerPAD 2 Applications 3.00 mm × 3.00 mm (10) TPS54040A • 12-V and 24-V Industrial and Commercial Low VSON (10) 3.00 mm × 3.00 mm Power Systems (1) For all available packages, see the orderable addendum at • Aftermarket Auto Accessories: Video, GPS, the end of the data sheet. Entertainment SPACER Simplified Schematic Efficiency vs Load Current 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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