LM5085MYE/NOPB Description

The LM5085MYE/NOPB is a high-efficiency PFET switching regulator controller that can quickly and easily develop a small, efficient buck regulator for 

various applications. This high voltage controller contains a PFET gate driver and a high-voltage bias regulator which operates over a wide 4.5-V to 75-V input range. The constant on-time regulation principle requires no loop compensation, simplifies 

circuit implementation, and results in ultrafast load transient response. The operating frequency remains nearly constant with line and load variations 

due to the inverse relationship between the input voltage and the on-time. 

LM5085MYE/NOPB Features

LM5085-Q1 is an Automotive Grade Product that is AEC-Q100 Grade 1 Qualified (- 40°C to 125°C Operating Junction Temperature)

Wide 4.5-V to 75-V Input Voltage Range

Adjustable Current Limit Using Ros(ON) or a Current Sense Resistor

Programmable Switching Frequency to 1MHz

No Loop Compensation Required

Ultra-Fast Transient Response

Nearly Constant Operating Frequency with Line and Load Variations

Adjustable Output Voltage from 1.25 V

Precision +2% Feedback Reference

Capable of 100% Duty Cycle Operation

Internal Soft-start Timer

Integrated High Voltage Bias Regulator

Thermal Shutdown

LM5085MYE/NOPB Applications

Automotive Infotainment

Battery/Super Capacitor Chargers

LED Drivers