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No-opto 100-V isolated monolithic flyback regulator offer high reliability benefits

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By eeNews Europe


The LT3511 operates over a 4.5 V to 100 V input voltage range, has a 240 mA, 150 V onboard power switch and delivers up to 2.5 watts, making it well suited for a wide variety of telecom, datacom, automotive, industrial and medical applications.

The LT3511 operates in a boundary mode, a current-mode control switching scheme, resulting in ±5% typical regulation over the full line, load and temperature range. Boundary mode, also known as critical conduction mode (CrCM), permits the use of a smaller transformer compared to equivalent continuous conduction mode designs. The output voltage is easily set by two external resistors and the transformer turns ratio. Several transformers identified in the data sheet can be used for numerous applications. Additional features include an onboard low dropout regulator for IC power, undervoltage lockout and output voltage temperature compensation. The high level of integration results in a simple, clean, tightly regulated solution for isolated power delivery.

The LT3511MPMS is available in a small MSOP-16 package with 4 pins removed for additional high voltage pin spacing. Pricing starts at $8.95 each in 1000-piece quantities.      

More information about at LT3511 flyback regulator at
www.linear.com/product/LT3511.


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