LM5576

Product Folder Sample & Buy Technical Documents Tools & Software Support & Community LM5576, LM5576-Q1 SNVS447J – JANUARY 2007 – REVISED NOVEMBER 2014 LM5576/-Q1 SIMPLE SWITCHER® 75 V, 3 A Step-Down Switching Regulator 1 Features 1 LM5576-Q1 is an Automotive Grade Product that is AEC-Q100 grade 1 Qualified (−40°C to + 125°C Operating Junction Temperature) and AEC-Q100 Grade 0 Qualified (−40°C to + 150°C Operating Junction Temperature) Integrated 75 V, 170 mΩ N-channel MOSFET Ultra-Wide Input Voltage Range from 6 V to 75 V Adjustable Output Voltage as Low as 1.225 V 1.5% (Q1) and 1.65% (Q0) Feedback Reference Accuracy Operating Frequency Adjustable Between 50 kHz and 500 kHz with Single Resistor Master or Slave Frequency Synchronization Adjustable Soft-Start Emulated Current Mode Control Architecture Wide Bandwidth Error Amplifier Built-in Protection HTSSOP-20EP (Exposed Pad) 2 Applications Automotive Industrial 3 Description The LM5576 is an easy to use SIMPLE SWITCHER® buck regulator which allows design engineers to design and optimize a robust power supply using a minimum set of components. Operating with an input voltage range of 6 - 75 V, the LM5576 delivers 3 A of continuous output current with an integrated 170 mΩ N-Channel MOSFET. The regulator utilizes an Emulated Current Mode architecture which provides inherent line regulation, tight load transient response, and ease of loop compensation without the usual limitation of low-duty cycl...