Part # LM5007EP datasheet

Part Manufacturer: National Semiconductor

National Semiconductor

Part Description: LM5007EP Enhanced Plastic High Voltage (80V) Step Down Switching Regulator

Part Details:

LM5007EP March 2004 LM5007EP Enhanced Enhanced Plastic High Voltage (80V) Step DownSwitching RegulatorGeneral Description Features The LM5007EP Step Down Switching Regulator features all n Integrated 80V, 0.7A N-Channel Buck Switch Plastic of the functions needed to implement low cost, efficient, n Internal HV Vcc Regulator Buck bias regulators. This high voltage regulator contains an n No Control Loop Compensation Required 80 V, 0.7A N-Channel Buck Switch. The device is easy to n Ultra-Fast Transient Response apply and is provided in the MSOP-8 and the thermally n On Time Varies Inversely with Line Voltage enhanced LLP-8 packages. The regulator is based on a n Operating Frequency Nearly Constant with Varying Line hysteretic control scheme using an on time inversely propor- High Voltage tional to V . This feature allows the operating frequency to IN remain relatively constant with load and input voltage varia- n Adjustable Output Voltage tions. The hysteretic control requires no control loop com- n Highly Efficient Operation V pensation, while providing very fast load transient response. n Precision Reference oltage An intelligent current limit is implemented in the LM5007EP n Low Bias Current with forced off time that is inversely proportional to V . OUT n Intelligent Current Limit Protection This current limiting scheme reduces load current foldback. n Thermal Shutdown Additional protection features include: Thermal Shutdown, n External Shutdown Control Vcc undervoltage lockout, gate drive undervoltage lockout, (80V) and Max Duty Cycle limiter. Typical Applications ENHANCED PLASTIC n Non-Isolated Buck Regulator · Extended Temperature Performance of -40°C to + 125°C n Secondary High Voltage Post Regulator Step · Baseline Control - Single Fab & Assembly Site n Selected Military Applications

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LM5007EP.pdf Datasheet