LMR14050

Product Folder Sample & Buy Technical Documents Tools & Software Support & Community LMR14050 SNVSAA6A – FEBRUARY 2015 – REVISED MARCH 2015 LMR14050 SIMPLE SWITCHER® 40 V 5 A, 2.2 MHz Step-Down Converter with 40 µA IQ 1 Features 1 4 V to 40 V Input Range 5 A Continuous Output Current Ultra-low 40 µA Operating Quiescent Current 90 mΩ High-Side MOSFET Minimum Switch-On Time: 75 ns Current Mode Control Adjustable Switching Frequency from 200 kHz to 2.5 MHz Frequency Synchronization to External Clock Internal Compensation for Ease of Use High Duty Cycle Operation Supported Precision Enable Input 1 µA Shutdown Current External Soft-start Thermal, Overvoltage and Short Protection 8-Pin HSOIC with PowerPAD™ Package 3 Description The LMR14050 is a 40 V, 5 A step down regulator with an integrated high-side MOSFET. With a wide input range from 4 V to 40 V, it’s suitable for various applications from industrial to automotive for power conditioning from unregulated sources. The regulator’s quiescent current is 40 µA in Sleep-mode, which is suitable for battery powered systems. An ultra-low 1 μA current in shutdown mode can further prolong battery life. A wide adjustable switching frequency range allows either efficiency or external component size to be optimized. Internal loop compensation means that the user is free from the tedious task of loop compensation design. This also minimizes the external components of the device. A precision enable input al...