Data Sheet

©2004 Fairchild Semiconductor Corporation www.fairchildsemi.com
FOD2741A, FOD2741B, FOD2741C Rev. 1.0.1 2
FOD2741A, FOD2741B, FOD2741C — Optically Isolated Error Amplifier
Pin Definitions
*The compensation network must be attached between pins 6 and 7.
Typical Application
Pin Number Pin Name Pin Description
1NCNot connected
2CPhototransistor Collector
3EPhototransistor Emitter
4NCNot connected
5 GND Ground
6 COMP Error Amplifier Compensation. This pin is the output of the error amplifier.*
7FBVoltage Feedback. This pin is the inverting input to the error amplifier
8 LED Anode LED. This pin is the input to the light emitting diode.
V
O
V
1
R1
R2
2
3
8
6
7
5
PWM
Control
FAN4803
FOD2741