LM5575

www.DataSheet4U.com LM5575 75V, 1.5A Step-Down Switching Regulator January 2007 LM5575 75V, 1.5A Step-Down Switching Regulator General Description The LM5575 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 lowduty 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 guarantees 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 TSSOP-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. Features ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ 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 accurac...