TPS54240

Product Folder Sample & Buy Technical Documents Tools & Software Support & Community TPS54240 SLVSAA6B – APRIL 2010 – REVISED NOVEMBER 2014 TPS54240 3.5-V to 42-V Step-Down DC - DC Converter With Eco-Mode™ 1 Features 1 3.5-V to 42-V Input Voltage Range 200-mΩ High-Side MOSFET High Efficiency at Light Loads With a Pulse Skipping Eco-Mode™ 138-μA Operating Quiescent Current 1.3-μA Shutdown Current 100-kHz to 2.5-MHz Switching Frequency Synchronizes to External Clock Adjustable Slow Start and Sequencing UV and OV Power Good Output Adjustable UVLO Voltage and Hysteresis 0.8-V Internal Voltage Reference 10-Pin HVSSOP and 10-Pin 3-mm x 3-mm VSON Packages with PowerPAD™ Supported by WEBENCH® Software Tool 2 Applications 12-V and 24-V Industrial and Commercial LowPower Systems GSM, GPRS Modules in Fleet Management, eMeters, and Security Systems 3 Description The TPS54240 device is a 42-V, 2.5-A, step-down regulator with an integrated high-side MOSFET. Current mode control provides simple external compensation and flexible component selection. A low-ripple, pulse skip mode reduces the no load, regulated output supply current to 138 μA. Using the enable pin, shutdown supply current is reduced to 1.3 μA, when the enable pin is low. Undervoltage lockout is internally set at 2.5 V, but it can be increased using the enable pin. The output voltage startup ramp is controlled by the slow-start pin that can also be configured for sequencing and tracking. An ...