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SI83418BDA-IFR
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Product Detailed Parameters
- Description：DGTL ISO 1.5KV 4CH SPI 32-VFDFN
- Series：Si834x
- Mfr：Skyworks Solutions Inc.
- Package：Tape & Reel (TR)
- 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-IFR is a four-channel isolated smart switch from Skyworks Solutions, designed for power distribution in embedded systems. 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 maximum on-resistance of 155 mOhms and operates within a supply voltage range of 2.25 V to 5.5 V or 9 V to 32 V. It supports SPI communication and includes integrated charge pumps for gate drive isolation. The component operates between -40°C and +125°C and is housed in a 32-lead DFN (9x9 mm) package.
Feature Summary
- Integrates four isolated high-side and low-side power switches with independent control
- Features integrated charge pumps for reliable gate drive across isolation barriers
- Supports serial peripheral interface (SPI) for configuration and status monitoring
- Includes comprehensive protection mechanisms against overcurrent and thermal events
Applications
- Power distribution units in industrial automation systems
- Load switching in automotive embedded controllers
- Isolated power management in medical equipment
- Smart switch modules for renewable energy inverters
Procurement Notes
Verify the specific suffix IF indicates tape-and-reel packaging when sourcing components. Confirm that the part number matches the exact silicon revision required for your design. Ensure compatibility with the associated evaluation board if development support is needed. Check for RoHS compliance documentation prior to final procurement decisions.
Selection Notes
Select this component when four independently controllable isolated channels are required. Consider the 700 mA continuous current rating for load requirements. Evaluate the 155 mOhm on-resistance for efficiency needs. Verify SPI interface compatibility with the host microcontroller. Assess the 32-DFN package constraints for PCB layout.
Part Context
This part belongs to the Si834xx family of isolated smart switches. It provides a compact solution for replacing discrete MOSFETs and gate drivers. The integration reduces board space and simplifies design complexity. It is suitable for applications requiring galvanic isolation between control logic and power loads.
Replacement Considerations
Check for direct substitutes like the SI83418BDA-IF. Verify pinout compatibility before substitution. Ensure electrical parameters match the original design requirements. Consult manufacturer documentation for any functional differences between revisions.
