LM5574-Q1 Datasheet | Texas Instruments

FEATURES - 23 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 50k Hz and 500k Hz 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) APPLICATIONS - Automotive - Industrial DESCRIPTION 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 ponents. 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 pensation without the usual limitation of low-duty cycles associated with current mode regulators. The operating frequency is adjustable from 50k Hz to 500k Hz 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. PACKAGE - TSSOP-16 Simplified Application Schematic LM5574 SYNC VOUT SD RT VCC IS OUT SS RAMP P...