Typical Application for Simplified SMPS Application Using the LR745 High Input Voltage SMPS Start-up

Reference Design using part LR745 by Microchip Technology

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Manufacturer

Microchip Technology
  • Application Category
    Power Supplies
  • Product Type
    DC to DC Single Output Power Supplies

For End Products

  • Battery Charger
  • Laptop
  • Motor Control
  • Notebook
  • Telecom Power Supply

Description

  • Typical Application for Simplified SMPS Application Using the LR745 High Input Voltage SMPS Start-up. The LR745 is a high input voltage SMPS startup circuit. The LR745 is ideally suited for use with industry standard low voltage PWM ICs having start thresholds of 13.9 to 18.0V. It allows the PWM ICs to be operated from rectified 120 or 240VAC lines, and eliminates the use of power resistors often used for this purpose

Key Features

  • Conversion Type
    DC to DC

Featured Parts (4)

Featured Parts
Part Number Manufacturer Type Description
LR745N3-G-P013 Microchip Technology Specialized Power ICs and Modules SMPS Start up Circuit 3-Pin TO-92 Ammo Buy
LR745N3-G-P003 Microchip Technology Specialized Power ICs and Modules SMPS Start up Circuit 3-Pin TO-92 T/R Buy
LR745N3-G Microchip Technology Specialized Power ICs and Modules SMPS Start up Circuit 3-Pin TO-92 Bag Buy
LR745N8-G Microchip Technology Specialized Power ICs and Modules SMPS Start up Circuit 4-Pin(3+Tab) SOT-89 T/R Buy

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