LM5017MRX/NOPB Description

The LM5017MRX/NOPB is a synchronous step-down regulator that runs at 100 V and 600 mA and has built-in high side and low side MOSFETs. The constant-time (COT) control scheme of the LM5017MRX/NOPB offers low loop compensation needs, excellent transition response, and extremely high step-down ratios. The on-time changes inversely with input voltage and has a nearly constant frequency over the input voltage range. Bias power for integrated gate drivers and IC internal functioning is provided by a high voltage starting regulator. Protection is offered by an anti-overload circuit with a peak current restriction. The under-voltage lockout (UVLO) circuit allows for individual control of the input under voltage threshold and hysteresis. Thermal shutdown and bias supply under-voltage lockout are two more safety measures (VCCUVLO).

LM5017MRX/NOPB Features

• RemoteShutdown

• ThermalShutdown

• No SchottkyRequired

• ConstantOn-TimeControl

• IntelligentPeakCurrentLimit

• Ultra-FastTransientResponse

• Wide7.5-Vto 100-VInputRange

• FrequencyAdjustableto 1 MHz

• No LoopCompensationRequired

• Precision2% FeedbackReference

• NearlyConstantOperatingFrequency

• AdjustableOutputVoltageFrom1.225V

• AdjustableUndervoltageLockout(UVLO)

• Integrated100-VHigh-Side,and Low-SideSwitches

LM5017MRX/NOPB Applications

• Isolated Bias Supply

• SmartPowerMeters

• Automotive Electronics

• Telecommunication Systems