Part # LM5010 datasheet

Part Manufacturer: National Semiconductor

National Semiconductor

Part Description: LM5010 High Voltage 1A Step Down Switching Regulator

Part Details:

LM5010 February 2005 High LM5010High Voltage 1A Step Down Switching Regulator Voltage General Description Features The LM5010 Step Down Switching Regulator features all the n Input Voltage Range: 8V to 75V functions needed to implement a low cost, efficient, buck n Valley Current Limit At 1.25A bias regulator capable of supplying in excess of 1A load n Switching Frequency Can Exceed 1 MHz 1A current. This high voltage regulator contains an N-Channel n Integrated N-Channel Buck Switch Buck Switch, and is available in thermally enhanced LLP-10 n Integrated Startup Regulator and TSSOP-14EP packages. The hysteretic regulation Step n No Loop Compensation Required scheme requires no loop compensation, results in fast loadtransient response, and simplifies circuit implementation. n Ultra-Fast Transient Response The operating frequency remains constant with line and load n Operating Frequency Remains Constant With Load and Down variations due to the inverse relationship between the input Line Variations voltage and the on-time. The valley current limit detection is n Maximum Duty Cycle Limited During Startup set at 1.25A. Additional features include: V under-voltage CC n Adjustable Output Voltage lockout, thermal shutdown, gate drive under-voltage lockout, n Precision 2.5V Feedback Reference and maximum duty cycle limiter. n Thermal shutdown Switching Typical Applicationsn High Efficiency Point-Of-Load (POL) Regulator n Non-Isolated Telecommunications Buck Regulator n Secondary High Voltage Post Regulator

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LM5010.pdf Datasheet