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LINEAR TECHNOLOGY  LT1725IS#PBF  DC/DC Controller, 22V, 1 Output, Flyback, 125kHz, SOIC-16

LINEAR TECHNOLOGY LT1725IS#PBF
Manufacturer Part No:
LT1725IS#PBF
Order Code:
1663477
Technical Datasheet:
See all Technical Docs

Image is for illustrative purposes only. Please refer to product description.

Product Overview

The LT1725IS#PBF is a monolithic Switching Regulator Controller specifically designed for the isolated flyback topology. It drives the gate of an external MOSFET and is generally powered from a third transformer winding. These features allow for an application input voltage limited only by external power path components. The third transformer winding also provides output voltage feedback information, such that an optoisolator is not required. Its gate drive capability coupled with a suitable external MOSFET can deliver load power up to tens of watts. The LT1725 has a number of features not found on most other switching regulator ICs. By utilizing current-mode switching techniques, it provides excellent AC and DC line regulation. Its unique control circuitry can maintain regulation well into discontinuous mode in most applications. Optional load compensation circuitry allows for improved load regulation.
  • Drives external power MOSFET with external ISENSE resistor
  • Application input voltage limited only by external power components
  • Senses output voltage directly from primary side winding - no optoisolator required
  • Accurate regulation without user trims
  • Regulation maintained well into discontinuous mode

Product Information

Supply Voltage Min:
-
Supply Voltage Max:
22V
No. of Outputs:
1 Output
Duty Cycle (%):
90%
Controller IC Case Style:
SOIC
No. of Pins:
16Pins
Switching Frequency:
125kHz
Topology:
Flyback
Operating Temperature Min:
-40°C
Operating Temperature Max:
125°C
Packaging:
Cut Tape
Product Range:
-
Automotive Qualification Standard:
-
MSL:
MSL 1 - Unlimited
SVHC:
No SVHC (17-Dec-2015)

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Applications

  • Power Management
  • Communications & Networking
  • Sensing & Instrumentation

Legislation and Environmental

Country of Origin:
Malaysia

Country in which last significant manufacturing process was carried out

RoHS Compliant:
Yes
Tariff No:
85423990
Weight (kg):
.000608

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