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LM5010SDX Datasheet

  • LM5010SDX

  • High Voltage 1A Step Down Switching Regulator

  • 19頁

  • NSC

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LM5010 High Voltage 1A Step Down Switching Regulator
October 2004
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
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Input Voltage Range: 8V to 75V
Valley Current Limit At 1.25A
Switching Frequency Can Exceed 1 MHz
Integrated N-Channel Buck Switch
Integrated Startup Regulator
No Loop Compensation Required
Ultra-Fast Transient Response
Operating Frequency Remains Constant With Load and
Line Variations
Maximum Duty Cycle Limited During Startup
Adjustable Output Voltage
Precision 2.5V Feedback Reference
Thermal shutdown
Typical Applications
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High Efficiency Point-Of-Load (POL) Regulator
Non-Isolated Telecommunications Buck Regulator
Secondary High Voltage Post Regulator
Automotive Systems
Package
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LLP-10 (4 mm x 4 mm)
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TSSOP-14EP
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Both Packages Have Exposed Thermal Pad For
Improved Heat Dissipation
20119943
Basic Stepdown Regulator
漏 2004 National Semiconductor Corporation
DS201199
www.national.com

LM5010SDX 產(chǎn)品屬性

  • National Semiconductor (TI)

  • 2.5 V to 70 V

  • 1 A

  • 1000 KHz

  • SMD/SMT

  • LLP EP

  • Reel

  • 1

  • 4500

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