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SI83412BBA-IF
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Product Detailed Parameters
- Description：DGTL ISO 1.5KV 2CH SPI 32-VFDFN
- Series：Si834x
- Mfr：Skyworks Solutions Inc.
- Package：Tray
- Switch Type：General Purpose
- Number of Outputs：2
- Ratio - Input:Output：2 x 1:1
- Output Configuration：High Side
- Output Type：N-Channel
- Interface：Parallel
- Voltage - Load：9V ~ 32V
- Voltage - Supply (Vcc/Vdd)：2.25V ~ 5.5V
- Current - Output (Max)：1.25A
- Rds On (Typ)：78mOhm
- 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 SI83412BBA-IF is a dual-channel isolated smart switch designed for power distribution applications. It integrates two N-channel MOSFETs with digital isolation, supporting a continuous current of 1.25A per channel. The device operates within a supply voltage range of 2.25V to 5.5V for the logic side and 9V to 32V for the power side. It features a compact 32-pin DFN (9x9mm) package, enabling efficient thermal management and space-saving PCB layouts in industrial and automotive systems.
Feature Summary
- Integrates dual isolated smart switches with integrated N-channel MOSFETs for high-side power control
- Provides galvanic isolation between control logic and power stages to protect sensitive circuitry
- Includes built-in protection mechanisms such as overcurrent limiting and thermal shutdown
- Supports parallel channel operation for increased current handling capability
Applications
- Industrial motor control and power distribution units
- Automotive body electronics and lighting systems
- Battery management systems requiring isolated switching
- Smart relay replacements in automation equipment
Procurement Notes
Verify the specific suffix IF against the manufacturer's latest datasheet to confirm pinout and electrical characteristics. Ensure compatibility with your system's isolation voltage requirements and thermal design constraints. Cross-reference the 32-DFN footprint with your PCB library to prevent assembly errors during procurement and integration.
Selection Notes
Select this component when dual-channel isolated switching is required in a compact form factor. Consider the 1.25A current rating and 32V maximum voltage for suitability in low-to-medium power distribution tasks. Evaluate the thermal performance of the 9x9mm DFN package against your enclosure's heat dissipation capabilities before finalizing the design.
Part Context
This part belongs to the Si834xx series of isolated smart switches from Skyworks Solutions. These devices are engineered to replace traditional discrete solutions, offering higher reliability and reduced board space. The series supports various configurations for industrial and automotive markets, emphasizing robust isolation and integrated protection features.
Replacement Considerations
Check for direct substitutes within the Si834xx family, such as the SI83418AFA-IF for quad-channel needs. Verify that any replacement maintains the same 32-DFN footprint and isolation ratings to ensure mechanical and electrical compatibility without redesigning the PCB layout.
