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FOD2711S
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Product Detailed Parameters
- Description：OPTOISOLATOR 5KV 1CH TRANS 8-SMD
- Series：-
- Mfr：Fairchild Semiconductor
- Package：Bulk
- Number of Channels：1
- Voltage - Isolation：5000Vrms
- Current Transfer Ratio (Min)：100% @ 10mA
- Current Transfer Ratio (Max)：200% @ 10mA
- Turn On / Turn Off Time (Typ)：-
- Rise / Fall Time (Typ)：-
- Input Type：DC
- Output Type：Transistor
- Voltage - Output (Max)：30V
- Current - Output / Channel：50mA
- Voltage - Forward (Vf) (Typ)：1.5V (Max)
- Current - DC Forward (If) (Max)：-
- Vce Saturation (Max)：400mV
- Operating Temperature：-40°C ~ 85°C
- Mounting Type：Surface Mount
- Package / Case：8-SMD, Gull Wing
- Supplier Device Package：8-SMD
- Grade：-
- Qualification：-
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Overview
The FOD2711S is an optically isolated error amplifier consisting of a precision programmable shunt reference (RC431A) coupled with a high-speed phototransistor output. It provides galvanic isolation for feedback loops in switching power supplies and motor drives. The device features a transistor output capable of sinking up to 50mA, with a maximum collector-emitter voltage of 30V. It operates within a temperature range of -40°C to 85°C and offers high common-mode transient immunity.
Feature Summary
- Integrates a precision programmable shunt reference with an optocoupler for closed-loop control applications
- Provides high-speed response suitable for switching regulator feedback paths
- Offers robust electrical isolation between input and output circuits
Applications
- Switching power supply feedback loops
- Motor drive control systems
- Battery charger regulation circuits
Procurement Notes
Verify the manufacturer source carefully, as Fairchild Semiconductor's semiconductor division was acquired by ON Semiconductor. Ensure the component matches the original Fairchild specifications or confirm if the ON Semiconductor version is an approved equivalent. Check for specific suffix variations that may indicate package type or tape-and-reel configuration.
Selection Notes
Select this component when a combined error amplifier and isolation stage is required to simplify circuit design. It is suitable for applications needing precise voltage referencing with galvanic separation. Consider the 50mA output current capability and 30V breakdown voltage to ensure compatibility with the downstream control circuitry requirements.
Part Context
This part belongs to the family of optically isolated error amplifiers designed for power management. It replaces discrete solutions combining a shunt regulator and a separate optocoupler, reducing board space and component count. The integration ensures matched thermal characteristics between the reference and the isolation barrier.
Replacement Considerations
FOD2711AS is a documented variant offering the same functionality in a surface-mount DIP package. Verify pinout compatibility and insulation ratings before substitution.
