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SI83408BDA-IF
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Product Detailed Parameters
- Description：DGTL ISO 1.5KV 4CH SPI 32-VFDFN
- Series：Si834x
- Mfr：Skyworks Solutions Inc.
- Package：Tray
- Switch Type：General Purpose
- Number of Outputs：4
- Ratio - Input:Output：4 x 1:1
- Output Configuration：High Side
- Output Type：N-Channel
- Interface：SPI
- Voltage - Load：9V ~ 32V
- Voltage - Supply (Vcc/Vdd)：2.25V ~ 5.5V
- Current - Output (Max)：700mA
- Rds On (Typ)：155mOhm
- Input Type：Non-Inverting
- Features：Slew Rate Controlled
- Fault Protection：Current Limiting (Fixed), Over Temperature, UVLO
- Operating Temperature：-40°C ~ 125°C (TA)
- Mounting Type：Surface Mount
- Supplier Device Package：32-DFN (9x9)
- Package / Case：32-VFDFN Exposed Pad
- Grade：-
- Qualification：-
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Overview
The SI83408BDA-IF is a four-channel isolated smart switch from Skyworks Solutions, designed for power distribution applications. It supports both high-side and low-side switching configurations with an output current of 700 mA and a current limit of 880 mA. The device operates with a logic supply voltage range of 2.25 V to 5.5 V and a switch supply voltage range of 9 V to 32 V. Key timing parameters include a maximum on time of 2.5 µs and a maximum off time of 3.5 µs. It features a 155 mΩ maximum on-resistance and is housed in a 32-DFN (9x9) package.
Feature Summary
- Integrated SPI interface for digital control and status reporting
- Complete fault protection including over-current, over-temperature, and open-load detection
- Galvanic isolation between control and power domains for safety and noise immunity
Applications
- Industrial automation motor control
- Power distribution units (PDUs)
- Automotive body electronics
Procurement Notes
Verify the specific suffix 'BDA' against official Skyworks documentation to confirm pinout and thermal pad configuration. Ensure the selected package matches the PCB footprint requirements. Confirm that the operating voltage ranges align with the system design specifications before finalizing procurement.
Selection Notes
Select this component when four independent channels with galvanic isolation are required. The 700 mA continuous current rating suits moderate load applications. Verify that the 32 V maximum switch supply meets the highest expected line voltage. Consider the 32-DFN package size for space-constrained designs requiring robust thermal performance.
Part Context
This part belongs to the Si834xx family of isolated smart switches. These devices integrate power MOSFETs with control logic and communication interfaces. The family offers various channel counts and current ratings to address diverse power switching needs in industrial and automotive environments.
Replacement Considerations
Check Skyworks datasheets for alternative parts within the Si834xx series with matching channel counts and current ratings. Verify pin compatibility if substituting with other DFN packages.
