LM5575MH Datasheet

1.5A Step-Down Switching Regulator


The LM5575MH 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 - 75V, the LM5575 delivers 1.5A of continuous output current with an integrated 330mΩ 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 cycles associated with current mode regulators. The operating frequency is adjustable from 50kHz to 500kHz to allow optimization of size and efficiency. To reduce EMI, a frequency synchronization pin allows multiple IC’s from the LM(2)557x family to self-synchronize or to synchronize to an external clock. The LM5575 ensures robustness with cycle-by-cycle current limit, short-circuit protection, thermal shut-down, and remote shut-down. The device is available in a power enhanced HTSSOP-16 package featuring an exposed die attach pad for thermal dissipation. The LM5575 is supported by the full suite of WEBENCH ® On-Line design tools. LM5575MH Features • LM5575Q is an Automotive Grade Product that is AEC-Q100 Grade 1 Qualified (-40°C to + 125°C Operating Junction Temperature)• Integrated 75V, 330mΩ N-channel MOSFET• Ultra-wide Input Voltage Range from 6V to 75V• Adjustable Output Voltage as Low as 1.225V• 1.5% Feedback Reference Accuracy• Operating Frequency Adjustable Between 50kHz and 500kHz with Single Resistor• Master or Slave Frequency Synchronization• Adjustable Soft-Start• Emulated Current Mode Control Architecture• Wide Bandwidth Error Amplifier• Built-in Protection• Automotive Grade Product Datasheet that is AEC-Q100 Grade 0 Qualified is Available Upon Request. – (-40°C to + 150°C Operating Junction Temperature) LM5575MH Applications • Automotive• Industrial


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