LM5017

LM5017 SNVS783K – JANUARY 2012 – REVISED AUGUST 2021 LM5017 100-V, 600-mA Constant On-Time Synchronous Buck / Fly-Buck™ Regulator 1 Features Wide 7.5-V to 100-V input range Integrated 100-V 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 (UVLO) Remote shutdown Thermal shutdown Packages: – WSON-8 – SO PowerPAD™-8 Create a custom regulator design using WEBENCH® Power Designer 2 Applications Industrial programmable logic controllers (PLC) Smart power meters Telecom primary and secondary side bias Low-power isolated DC/DC (Fly-Buck™) VIN = 7.5 V...100 V VIN BST LM5017 SW RON UVLO FB VCC RTN VOUT Copyright © 2018, Texas Instruments Incorporated Typical Synchronous Buck Application Circuit 3 Description The LM5017 is a 100-V, 600-mA synchronous stepdown regulator with integrated high side and low side MOSFETs. The constant on-time (COT) control scheme employed in the LM5017 requires no loop compensation, provides excellent transient response, and enables very high 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...