Fairchild FOD2743A FOD2743B FOD2743C Optical Isolation Error Amplifier Manual
Summary
These optically isolated error amplifiers are essential components for engineers designing robust power supplies and DC/DC converters. Combining a precision reference voltage source with an optocoupler, these devices manage regulated AC-to-DC power systems while ensuring high isolation up to 5,000V. Available in three variants (A, B, C) offering different tolerances, they help designers reduce component count without sacrificing accuracy. The documentation details electrical performance, pinouts, and integration guidelines for reliable system operation.
Manual Details
| Brand | Fairchild |
|---|---|
| Pages | 16 |
| File Size | 322.99 KB |
| Published | May 30, 2026 |
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Frequently Asked Questions
How is the FOD2743 series integrated?
It combines an optocoupler with a precision programmable shunt reference and error amplifier in a single package.
Which grade is best for applications needing minimal adjustment?
The FOD2743A offers the tightest tolerance (0.5%), eliminating the need for adjustments in many applications.
What are the temperature specifications for operation?
The recommended operating temperature range is -40 to +85°C.
How must the error amplifier be connected?
The compensation network must be attached between pins 2 (COMP) and 4 (FB).
What are the power dissipation limits for the device?
Total power dissipation (PD3) is limited to 145 mW.