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Error Amplifiers

In electrical systems, error amplifiers feed current back into a control circuit to keep the output voltage as close to the circuit’s design specification as possible. To do its job, an error amplifier must first detect the difference between the actual current and the intended output voltage. A 4-terminal 431-type shunt regulator performs this detection function in the error amplifier produced by Littelfuse. A paired Darlington transistor in our error amplifier handles the task of feeding current back into the control circuit. Common applications of the device include LED lights and dc–dc converters.
  • Operate at 1.3 V to 12.5 V over circuits’ designed temperatures
  • 350 V breakdown voltages for Darlington transistors
  • Typical accuracy of 1.299 V ± 1 %
  • 4-pin SOIC packages
  • Certified lead-free and RoHS compliant
  • Very low-profile design
  • Low power dissipation
  • Low collector current requirements
  • Highly resistant to moisture (MSL 1)

Error Amplifiers Resources