LTC3803-3

PRODUCTION

Constant Frequency Current Mode Flyback DC/DC Controller in ThinSOT

Part Details

  • VIN and VOUT Limited Only by External Components
  • Adjustable Slope Compensation
  • Internal Soft-Start
  • –55°C to 150°C Operating Temperature Range
  • Constant Frequency 300kHz Operation
  • ±1.5% Reference Accuracy
  • Current Mode Operation for Excellent Line and Load Transient Response
  • No Minimum Load Requirement
  • Low Quiescent Current: 240μA
  • Low Profile (1mm) SOT-23 Package
LTC3803-3
Constant Frequency Current Mode Flyback DC/DC Controller in ThinSOT
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Documentation

Data Sheet

This is the most up-to-date revision of the Data Sheet.

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Software Resources

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Tools & Simulations

LTspice 1


Models for the following parts are available in LTspice:

  • LTC3803
  • LTC3803-3
  • LTC3803-5
LTspice

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.


Evaluation Kits

eval board
DC1100A

LTC3803ES6-3 Isolated Demo Board | Flyback Controller, 18V ≤ VIN ≤ 72V, VOUT = 3.3V @ 3A

Product Details

Demonstration circuit 1100 is an isolated Telecom DC/DC converter featuring the LTC3803ES6-3 constant frequency current mode flyback controller. The DC1100 converts 18V to 72V input into 3.3V output and provides 3A of output current. The 300KHz constant frequency operation is maintained down to light loads which reduces low frequency noise that occurs when power converters operate in pulse skipping mode. The converter provides high output voltage accuracy (typically ± 2%) over wide load range with no minimum load requirement.



DC1100A
LTC3803ES6-3 Isolated Demo Board | Flyback Controller, 18V ≤ VIN ≤ 72V, VOUT = 3.3V @ 3A

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