• LM5574-Q1 is an Automotive Grade Product That is AEC-Q100 Grade Qualified
• −40°C to + 150°C Operating Junction Temperature
• Integrated 75 V, 750 mΩ N-Channel MOSFET
• Ultra-Wide Input Voltage Range From 6 V to 75 V
• Adjustable Output Voltage as Low as 1.225 V
• 1.65% 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
• Package:
  • TSSOP-16

• Automotive
• Industrial

The LM5574-Q1 is an easy to use SIMPLESWITCHER® 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 LM5574-Q1 delivers 0.5 A of continuous output current with an integrated 750 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 cycles associated with current mode regulators. The operating frequency is adjustable from 50 kHz to 500 kHz to allow optimization of size and efficiency. To reduce EMI, a frequency synchronization pin allows multiple ICs from the LM(2)557x family to self-synchronize or to synchronize to an external clock. The LM5574-Q1 ensures robustness with cycle-by-cycle current limit, short-circuit protection, thermal shut-down, and remote shut-down. The device is available in a TSSOP-16 package. The LM5574-Q1 is supported by the full suite of WEBENCH® On-Line design tools.