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SI83418BDA-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 SI83418BDA-IF is a four-channel isolated smart switch from Skyworks Solutions, designed for power distribution applications. It integrates high-side and low-side N-channel switches with a maximum output current of 700 mA per channel and an 880 mA current limit. The device features a 155 mOhm maximum on-resistance and supports dual supply voltage ranges: 2.25 V to 5.5 V for the logic side and 9 V to 32 V for the load side. It operates within a temperature range of -40°C to +125°C and utilizes a 32-pin DFN (9x9 mm) package.
Feature Summary
- Integrates four independent isolated channels with high-side and low-side sinking capabilities
- Includes SPI interface control with per-channel status indication
- Provides integrated overcurrent protection with defined current limiting thresholds
- Supports fast switching transitions with specified on-time and off-time characteristics
Applications
- Industrial automation power distribution modules
- Isolated gate driver circuits in motor control systems
- Power management units in telecommunications infrastructure
- Smart switch arrays for battery management systems
Procurement Notes
Verify the specific suffix IF against official Skyworks documentation to confirm pinout and packaging configuration. Ensure compatibility with SPI communication protocols and verify that the 32-DFN thermal requirements are met by the target PCB design. Confirm operating voltage ranges align with system specifications before integration.
Selection Notes
Select this component when four isolated channels with integrated current limiting are required in a compact form factor. The dual voltage domain support allows flexible logic interfacing while handling higher load voltages. Consider the DFN package size and thermal dissipation capabilities relative to the expected continuous current load and ambient operating conditions.
Part Context
This part belongs to the Si834xx series of isolated smart switches from Skyworks Solutions. The series focuses on providing integrated power switching and isolation in a single package, reducing board space and component count compared to discrete solutions. It is designed for robust industrial and commercial environments requiring reliable power distribution.
Replacement Considerations
Check for direct substitutes within the Si834xx family, such as the SI83418ADA-DC or SI83418AFA-IF, ensuring pin compatibility and identical electrical specifications. Verify that any alternative maintains the same 32-DFN footprint and SPI interface requirements.
