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LM5010 Datasheet(PDF) 1 Page - National Semiconductor (TI) |
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LM5010 Datasheet(HTML) 1 Page - National Semiconductor (TI) |
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1 / 19 page  LM5010 High Voltage 1A Step Down Switching Regulator General Description The LM5010 Step Down Switching Regulator features all the functions needed to implement a low cost, efficient, buck bias regulator capable of supplying in excess of 1A load current. This high voltage regulator contains an N-Channel Buck Switch, and is available in thermally enhanced LLP-10 and TSSOP-14EP packages. The hysteretic regulation scheme requires no loop compensation, results in fast load transient response, and simplifies circuit implementation. The operating frequency remains constant with line and load variations due to the inverse relationship between the input voltage and the on-time. The valley current limit detection is set at 1.25A. Additional features include: V CC under-voltage lockout, thermal shutdown, gate drive under-voltage lockout, and maximum duty cycle limiter. Features n Input Voltage Range: 8V to 75V n Valley Current Limit At 1.25A n Switching Frequency Can Exceed 1 MHz n Integrated N-Channel Buck Switch n Integrated Startup Regulator n No Loop Compensation Required n Ultra-Fast Transient Response n Operating Frequency Remains Constant With Load and Line Variations n Maximum Duty Cycle Limited During Startup n Adjustable Output Voltage n Precision 2.5V Feedback Reference n Thermal shutdown Typical Applications n High Efficiency Point-Of-Load (POL) Regulator n Non-Isolated Telecommunications Buck Regulator n Secondary High Voltage Post Regulator n Automotive Systems Package n LLP-10 (4 mmx4mm) n TSSOP-14EP n Both Packages Have Exposed Thermal Pad For Improved Heat Dissipation 20119943 Basic Stepdown Regulator October 2004 © 2004 National Semiconductor Corporation DS201199 www.national.com |
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