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ANALOG DEVICES LTC3805IMSE#PBF

DC/DC Controller, Flyback, 1 Output, 80% Duty Cycle, 700kHz, MSOP-EP-10

ANALOG DEVICES LTC3805IMSE#PBF

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Manufacturer Part No:
LTC3805IMSE#PBF
Order Code:
4026465
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Technical Datasheet:
LTC3805IMSE#PBF   Datasheet
ECAD / MCAD
Supply Frame Models Link
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Product Overview

LTC®3805 is a current mode controller for flyback DC/DC converters designed to drive an N-channel MOSFET in high input and output voltage converter applications. Operating frequency and slope compensation can be programmed by external resistors. Programmable overcurrent sensing protects the converter from short-circuits. Soft-start can be programmed using an external capacitor and the soft-start capacitor also programs an automatic restart feature. This provides ±1.5% output voltage accuracy and consumes only 360µA of quiescent current during normal operation and only 40µA during micropower start-up. Using a 9.5V internal shunt regulator, this can be powered from a high VIN through a resistor or it can be powered directly from a low impedance DC voltage of 9V or less. Typical applications are telecom power supplies, 42V and 12V automotive power supplies, isolated electronic equipment.
  • VIN and VOUT limited only by external components
  • Adjustable slope compensation, adjustable overcurrent protection with automatic restart
  • Adjustable operating frequency (70KHz to 700KHz) with one external resistor
  • Synchronizable to an external clock, ±1.5% reference accuracy
  • Current mode operation for excellent line and load transient response
  • RUN pin with precision threshold and adjustable hysteresis
  • Programmable soft-start with one external capacitor
  • Input DC supply current is 360µA (normal operation (fOSC=200KHz))
  • 10-lead plastic MSOP package
  • Temperature rating range from –40°C to 125°C

Footnotes

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party

Product Information

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Current Mode Control

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-

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-

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1Outputs

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80%

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MSOP-EP

:
10Pins

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700kHz

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Flyback

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-40°C

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125°C

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-

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-

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MSL 1 - Unlimited

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Technical Documents (1)

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¥968.43 ( ¥1,065.27  Inc. JCT)

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