The LM5574 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 LM5574 delivers 0.5A of continuous output current with an integrated 750mΩ 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 LM5574 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 is supported by the full suite of WEBENCH On-Line design tools.
● LM5574-Q1 is an Automotive Grade Product that is AEC-Q100 Grade 1 Qualified (−40°C to + 125°C Operating Junction Temperature)
● Integrated 75V, 750mΩ 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)
●## Package
● TSSOP-16
●WEBENCH is a trademark of Texas Instruments. All trademarks are the property of their respective owners.
