TPS54340

Product Folder Order Now Technical Documents Tools & Software Support & Community TPS54340 SLVSBK0D – OCTOBER 2012 – REVISED MARCH 2017 TPS54340 42 V Input, 3.5 A, Step Down DC-DC Converter with Eco-mode™ 1 Features 1 4.5 V to 42 V (45 V Abs Max) Input Range 3.5 A Continuous Current, 4.5 A Minimum Peak Inductor Current Limit Current Mode Control DC-DC Converter 92-mΩ High-Side MOSFET High Efficiency at Light Loads with Pulse Skipping Eco-mode™ Low Dropout at Light Loads with Integrated BOOT Recharge FET 146 μA Operating Quiescent Current 1 μA Shutdown Current 100 kHz to 2.5 MHz Fixed Switching Frequency Synchronizes to External Clock Adjustable UVLO Voltage and Hysteresis Internal Soft-Start Accurate Cycle-by-Cycle Current Limit Thermal, Overvoltage, and Frequency Foldback Protection 0.8 V 1% Internal Voltage Reference 8-Terminal HSOP with PowerPAD™ Package –40°C to 150°C TJ Operating Range Create a Custom Design with WEBENCH Tools 2 Applications 12 V, 24 V Industrial, Automotive and Communications Power Systems 3 Description The TPS54340 is a 42 V, 3.5 A, step down regulator with an integrated high side MOSFET. The device survives load dump pulses up to 45 V per ISO 7637. Current mode control provides simple external compensation and flexible component selection. A low ripple pulse skip mode reduces the no load supply current to 146 μA. Shutdown supply current is reduced to 1 μA when the enable pin is pulled low. Undervoltage lockou...