LM5001

LM5001 High Voltage Switch Mode Regulator August 2007 LM5001 High Voltage Switch Mode Regulator General Description The LM5001 high voltage switch mode regulator features all of the functions necessary to implement efficient high voltage Boost, Flyback, SEPIC and Forward converters, using few external components. This easy to use regulator integrates a 75 Volt N-Channel MOSFET with a 1 Amp peak current limit. Current mode control provides inherently simple loop compensation and line-voltage feed-forward for superior rejection www.DataSheet4U.com of input transients. The switching frequency is set with a single resistor and is programmable up to 1.5MHz. The oscillator can also be synchronized to an external clock. Additional protection features include: current limit, thermal shutdown, under-voltage lockout and remote shutdown capability. The device is available in both SO-8 and LLP-8 packages. Features ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ Integrated 75 volt N-Channel MOSFET Ultra-wide input voltage range from 3.1V to 75V Integrated high voltage bias regulator Adjustable output voltage 1.5% output voltage accuracy Current mode control with selectable compensation Wide bandwidth error amplifier Integrated current sensing and limiting Integrated slope compensation 85% maximum duty cycle limit Single resistor oscillator programming Oscillator synchronization capability Enable / Undervoltage Lockout (UVLO) pin Thermal shutdown Packages ■ SO-8 ■ LLP-8 (4mm x 4mm) Typical Application Ci...