No-Opto 100V Isolated Monolithic Flyback Regulator Operates over a -55°C to 150°C Junction Temperature Range (LT3512)

News Release ⎜ www.linear.com
No-Opto 100V Isolated Monolithic Flyback Regulator
Operates over a -55°C to 150°C Junction Temperature Range
MILPITAS, CA – September 15, 2011 – Linear Technology Corporation announces the new
high reliability (MP-grade) version of the LT3512, a high voltage isolated monolithic flyback
regulator that operates over a -55°C to 150°C junction temperature range. This device simplifies
the design of an isolated DC/DC converter. The LT3512 requires no optocoupler, third winding
or signal transformer for feedback, as the device’s output voltage is sensed from the primary-side
flyback signal. The LT3512 operates over a 4.5V to 100V input voltage range, has a 420mA,
150V power switch and delivers up to 4.5 watts of output power, making it well suited for a wide
variety of telecom, datacom, automotive, industrial and military applications.
The LT3512 operates in a boundary mode, current-mode control switching scheme,
resulting in less than +/-5% 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. The device’s high level of integration results in a
simple, clean, tightly regulated application solution to the traditional challenge of isolated power
delivery.
The LT3512MP is available in a small MSOP-16 package with 4 pins removed for
additional high voltage pin spacing. Pricing starts at $9.35 each in 1000-piece quantities. For
more information, visit www.linear.com/product/LT3512MP
No-Opto 100V Isolated Monolithic Flyback Regulator
Operates over a -55°C to 150°C Junction Temperature Range
page 2
Photo Caption: 100V Isolated Monolithic Flyback Regulator
Summary of Features: LT3512MP
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VIN Range from 4.5V to 100V
Onboard 420mA, 150V Integrated Power Switch
No Optocoupler, Transformer or Third Winding Required for Feedback
Boundary-Mode Operation
VOUT Set with Two External Resistors
Off-the-Shelf Transformers
Programmable Undervoltage Lockout
Output Voltage Temperature Compensation
-55°C to 150°C Operating Junction Temperature Range
About Linear Technology
Linear Technology Corporation, a member of the S&P 500, has been designing, manufacturing
and marketing a broad line of high performance analog integrated circuits for major companies
worldwide for three decades. The Company’s products provide an essential bridge between our
analog world and the digital electronics in communications, networking, industrial, automotive,
computer, medical, instrumentation, consumer, and military and aerospace systems. Linear
Technology produces power management, data conversion, signal conditioning, RF and interface
ICs, and µModule® subsystems.
LT, LTC, LTM, µModule and
are registered trademarks of Linear Technology Corp. All other trademarks are the
property of their respective owners.
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John Hamburger, Director Marketing
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Tel: 408-432-1900 ext 2419
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Tel: +44-1-252-629937
Doug Dickinson, Media Relations Manager
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Tel: 408-432-1900 ext 2233