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FOD2741AS
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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 FOD2741AS is a single-channel optically isolated error amplifier manufactured by Fairchild Semiconductor. It integrates a precision programmable shunt reference with an NPN phototransistor output coupler in an 8-pin SMD-DIP package. The device provides high isolation voltage of 5000 Vrms and operates within a temperature range of -40°C to +85°C. Key electrical parameters include a typical current transfer ratio of 100%, a maximum collector current of 50 mA, and a reference voltage of 2.495 V.
Feature Summary
- Integrates a precision programmable shunt reference with an optocoupler for closed-loop control applications
- Provides high-voltage electrical isolation between input and output circuits
- Features an NPN phototransistor output stage for signal transmission
Applications
- Switching power supply feedback loops
- Error amplifier circuits in isolated power converters
- Voltage regulation systems requiring galvanic isolation
Procurement Notes
Verify the specific suffix 'SDV' or 'AS' against the manufacturer's current datasheet to confirm pinout compatibility and package type. Confirm RoHS compliance status as manufacturing sources may vary between Fairchild and onsemi. Ensure the operating temperature range meets system requirements, noting potential differences between standard and extended grade variants.
Selection Notes
Select this component when a compact solution combining a reference and isolation barrier is required. The integrated design reduces external component count compared to discrete resistor networks and separate optocouplers. Consider the thermal dissipation capabilities of the SMD-DIP-8 package for high-power environments.
Part Context
This part belongs to the FOD2741 series of optically isolated amplifiers. It is functionally related to the FOD2741A but differs in packaging and potentially sourcing history due to corporate acquisitions. The series is designed for applications demanding precise voltage referencing across isolation barriers.
Replacement Considerations
Public confirmed substitute part numbers are not available in the provided documentation. Verify cross-references with FOD2741A or FOD2741B series only if datasheet specifications match exactly.
