LM5019

Product Folder Order Now Technical Documents Tools & Software Support & Community Reference Design LM5019 SNVS788G – JANUARY 2012 – REVISED NOVEMBER 2017 LM5019 100-V, 100-mA Constant On-Time Synchronous Buck Regulator 1 Features 1 Wide 7.5-V to 100-V Input Range Integrated 100-mA High-Side and Low-Side Switches No Schottky Required Constant On-Time Control No Loop Compensation Required Ultra-Fast Transient Response Nearly Constant Operating Frequency Intelligent Peak Current Limit Adjustable Output Voltage From 1.225 V Precision 2% Feedback Reference Frequency Adjustable to 1 MHz Adjustable Undervoltage Lockout Remote Shutdown Thermal Shutdown Packages: – 8-Pin WSON – 8-Pin SO PowerPAD Create a Custom Design Using the LM5019 With the WEBENCH® Power Designer 2 Applications Smart Power Meters Telecommunication Systems Automotive Electronics Isolated Bias Supply 3 Description The LM5019 is a 100-V, 100-mA synchronous stepdown regulator with integrated high-side and low-side MOSFETs. The constant-on-time (COT) control scheme employed in the LM5019 requires no loop compensation, provides excellent transient response, and enables very low step-down ratios. The on-time varies inversely with the input voltage resulting in nearly constant frequency over the input voltage range. A high-voltage startup regulator provides bias power for internal operation of the IC and for integrated gate drivers. A peak current limit circuit protects again...