器件名称:
LM5000_07
功能描述:
High Voltage Switch Mode Regulator
文件大小:
385.84KB 共18页
简 介:
LM5000 High Voltage Switch Mode Regulator February 2007 LM5000 High Voltage Switch Mode Regulator General Description The LM5000 is a monolithic integrated circuit specifically designed and optimized for flyback, boost or forward power converter applications. The internal power switch is rated for a maximum of 80V, with a current limit set to 2A. Protecting the power switch are current limit and thermal shutdown circuits. The current mode control scheme provides excellent rejection of line transients and cycle-by-cycle current limiting. An external compensation pin and the built-in slope compensation allow the user to optimize the frequency compensation. Other distinctive features include softstart to reduce stresses during start-up and an external shutdown pin for remote ON/ OFF control. There are two operating frequency ranges available. The LM5000-3 is pin selectable for either 300kHz (FS Grounded) or 700kHz (FS Open). The LM5000-6 is pin selectable for either 600kHz (FS Grounded) or 1.3MHz (FS Open). The device is available in a low profile 16-lead TSSOP package or a thermally enhanced 16-lead LLP package. Features ■ 80V internal switch ■ Operating input voltage range of 3.1V to 40V ■ Pin selectable operating frequency ■ ■ ■ ■ ■ ■ ■ ■ 300kHz/700kHz (-3) 600kHz/1.3MHz (-6) Adjustable output voltage External compensation Input undervoltage lockout Softstart Current limit Over temperature protection External shutdown Small 16-Lead TSSOP or 16-Lead LLP package Applicatio……
