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FOD2711AS
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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 FOD2711AS is an optically isolated error amplifier manufactured by Fairchild Semiconductor. It integrates a precision programmable shunt reference (RC431A) with an optocoupler to provide isolation and amplification in a single package. The device features a transistor output type and supports one channel. Key electrical parameters include a maximum collector-emitter saturation voltage of 400 mV, a maximum collector-emitter voltage of 30 V, and a power dissipation rating of 145 mW. It operates within a temperature range of -40°C to +85°C.
Feature Summary
- Integrates RC431A precision programmable shunt reference with an optocoupler for combined error amplification and isolation functions.
- Provides high-voltage isolation capability suitable for separating control circuits from high-voltage power stages.
- Features a phototransistor output configuration designed for direct interfacing with feedback loops in switching regulators.
Applications
- Error amplifier function in isolated AC to DC power supplies.
- Reference and isolation component in DC/DC converters.
- Feedback loop implementation in switch-mode power supply designs.
Procurement Notes
Verify the specific suffix 'AS' against the manufacturer's current datasheet to confirm pinout compatibility and packaging details, as suffixes often denote tape-and-reel or specific thermal characteristics. Ensure the source document explicitly lists FOD2711AS rather than the generic FOD2711A to guarantee correct functional specifications and isolation ratings are applied to the procurement order.
Selection Notes
Select this component when a combined error amplifier and optoisolator is required to reduce board space and component count in isolated power designs. It is appropriate for applications needing a stable reference voltage alongside signal isolation. Consider the 10 kHz bandwidth and 5000 Vrms isolation rating to ensure they meet the system's noise immunity and safety requirements.
Part Context
The FOD2711 series belongs to Fairchild's family of optically isolated error amplifiers. These devices are engineered to replace discrete resistor networks and separate optocouplers in feedback paths. The AS variant typically denotes a specific packaging or reel option within the broader FOD2711 product line, maintaining the core integration of the RC431A reference and phototransistor output.
Replacement Considerations
Public confirmed substitute part numbers: FOD2711A, FOD2711ASD, FOD2711ASDV, FOD2711ASV. Verify pinout and isolation voltage ratings before substitution.
