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LT1737CS#PBF - 

DC/DC Controller, High Power, 4.5V to 20V, 1 Output, Flyback, 125kHz, SOIC-16

LT1737CS#PBF - DC/DC Controller, High Power, 4.5V to 20V, 1 Output, Flyback, 125kHz, SOIC-16

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

Manufacturer Part No:
LT1737CS#PBF
Order Code:
1273781
Technical Datasheet:
(EN)
See all Technical Docs

Product Overview

The LT1737CS#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 DC supply voltage. Output voltage feedback information may be supplied by a variety of methods including a third transformer winding, the primary winding or even direct DC feedback. Its gate drive capability coupled with a suitable external MOSFET and other power path components can deliver load power up to tens of Watts. It has a number of features not found on other isolated flyback controller ICs presently available. 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. An optional undervoltage lockout pin halts operation when the application input voltage is too low.
  • Drives external power MOSFET
  • Flyback voltage limited only by external components
  • Senses output voltage directly from primary side winding - no optoisolator required
  • Moderate accuracy regulation without user trims
  • Regulation maintained well into discontinuous mode
  • External ISENSE resistor
  • Shutdown feature reduces IQ to 50µA typical

Applications

Medical, Power Management

Product Information

:
4.5V
:
20V
:
1 Output
:
90%
:
SOIC
:
16Pins
:
125kHz
:
Flyback
:
0°C
:
100°C
:
Cut Tape
:
-
:
-
:
Yes
:
MSL 1 - Unlimited
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