LMR14020 Datasheet | Texas Instruments

Product Folder Sample & Buy Technical Documents Tools & Software Support & munity SNVSAA5A - FEBRUARY 2015 - REVISED APRIL 2015 LMR14020 SIMPLE SWITCHER® 40 V 2 A, 2.2 MHz Step-Down Converter with 40 µA IQ 1 Features - 1 4 V to 40 V Input Range - 2 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 k Hz to 2.5 MHz - Frequency Synchronization to External Clock - Internal pensation 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 Power PAD™ Package 3 Description The LMR14020 is a 40 V, 2 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 ponent size to be optimized. Internal loop pensation means that the user is free from the tedious task of loop pensation design. This also minimizes the external ponents of the device. A precision enable input allows simplification of regulator control and system power sequencing. The device also has built-in protection Features such as cycle-by-cycle current limit, thermal sensing and shutdown due to excessive power dissipation, and output overvoltage protection. 2 Applications - Automotive Battery...