Part # LM5000EP datasheet

Part Manufacturer: National Semiconductor

National Semiconductor

Part Description: LM5000EP Enhanced Plastic High Voltage Switch Mode Regulator

Part Details:

LM5000EP May 2004 LM5000EP Enhanced Enhanced Plastic High Voltage Switch Mode RegulatorGeneral Description Features The LM5000EP is a monolithic integrated circuit specifically n 80V internal switch designed and optimized for flyback, boost or forward power n Operating input voltage range of 3.1V to 40V converter applications. The internal power switch is rated for n Pin selectable operating frequency Plastic a maximum of 80V, with a current limit set to 2A. Protecting 300kHz/700kHz (-3) the power switch are current limit and thermal shutdown 600kHz/1.3MHz (-6) circuits. The current mode control scheme provides excellent n Adjustable output voltage rejection of line transients and cycle-by-cycle current limiting. n External compensation An external compensation pin and the built-in slope compen- n Input undervoltage lockout sation allow the user to optimize the frequency compensa- High tion. Other distinctive features include softstart to reduce n Softstart stresses during start-up and an external shutdown pin for n Current limit remote ON/OFF control. There are two operating frequency n Over temperature protection V ranges available. The LM5000-3EP is pin selectable for n External shutdown oltage either 300kHz (FS Grounded) or 700kHz (FS Open). The n Small 16-Lead TSSOP or 16-Lead LLP package LM5000-6EP is pin selectable for either 600kHz (FSGrounded) or 1.3MHz (FS Open). The device is available in Applications a low profile 16-lead TSSOP package or a thermally en-hanced 16-lead LLP package. n Flyback Regulator Switch n Forward Regulator ENHANCED PLASTIC n Boost Regulator · Extended Temperature Performance of -40°C to +125°C n Distributed Power Converters · Baseline Control - Single Fab & Assembly Site n Selected Military Applications · Process Change Notification (PCN) n Selected Avionics Applications Mode

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LM5000EP.pdf Datasheet