Part # LM5008EP datasheet

Part Manufacturer: National Semiconductor

National Semiconductor

Part Description: LM5008EP High Voltage (100V) Step Down Switching Regulator

Part Details:

LM5008EP April 2006 LM5008EP High High Voltage (100V) Step Down Switching RegulatorGeneral Description Features V The LM5008EP Step Down Switching Regulator features all oltage n Integrated 100V, N-Channel buck switch of the functions needed to implement a low cost, efficient, n Internal V regulator CC Buck bias regulator. This high voltage regulator contains an n No loop compensation required 100 V N-Channel Buck Switch. The device is easy to imple- n Ultra-Fast transient response ment and is provided in the MSOP-8 and the thermally n On time varies inversely with line voltage (100V) enhanced LLP-8 packages. The regulator is based on a n Operating frequency remains constant with varying line hysteretic control scheme using an ON time inversely pro- voltage and load current portional to V . This feature allows the operating frequency IN to remain relatively constant. The hysteretic control requires n Adjustable output voltage no loop compensation. An intelligent current limit is imple- n Highly efficient operation Step mented with forced OFF time, which is inversely proportional n Precision internal reference to Vout. This scheme ensures short circuit protection while n Low bias current providing minimum foldback. Other protection features in- n Intelligent current limit protection clude: Thermal Shutdown, V under-voltage lockout, Gate CC n Thermal shutdown Down drive under-voltage lockout, and Max Duty Cycle limiter ENHANCED PLASTIC Typical Applications · Extended Temperature Performance of -40°C to +125°C n Selected Military Applications · Baseline Control - Single Fab & Assembly Site Switching n Selected Avionics Applications · Process Change Notification (PCN)

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LM5008EP.pdf Datasheet