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SI83404BCA-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：Parallel
- 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 SI83404BCA-IF is a four-channel isolated smart switch IC from Skyworks Solutions, designed for power distribution applications. It features high-side and low-side output configurations with parallel inputs and integrated channel status and low voltage indicators. The device supports an operating supply voltage range of 2.25 V to 32 V. Key electrical specifications include a maximum on-resistance of 155 mΩ, a continuous output current of 700 mA, and a current limit of 880 mA. Switching performance includes a maximum turn-on time of 2.5 µs and a maximum turn-off time of 3.5 µs. It operates within a temperature range of -40°C to +125°C.
Feature Summary
- Integrates four independent channels with parallel input control architecture
- Provides real-time channel status monitoring and low voltage indication
- Offers galvanic isolation between control logic and power switches
Applications
- Industrial power distribution systems
- Automotive electronic control units
- Smart grid infrastructure equipment
Procurement Notes
Verify the specific suffix 'BCA' against official Skyworks documentation to confirm pinout and package configuration, as variations exist within the SI834xx family. Ensure compatibility with system isolation requirements and thermal management needs for the SOIC-16 package. Cross-reference the datasheet for exact electrical limits under varying ambient temperatures.
Selection Notes
Select this component when four isolated high/low-side switches are required in a compact form factor. The parallel input design simplifies control logic compared to individually addressed channels. Consider the 155 mΩ on-resistance for efficiency calculations and the 700 mA output capability for load matching. Verify that the 32 V maximum supply voltage aligns with the system's power rail specifications.
Part Context
This part belongs to the SI834xx series of isolated smart switches, which combines digital isolators with power MOSFETs. The SI83404 variant specifically provides four channels, distinguishing it from single or dual-channel counterparts like the SI8340 or SI8342. The BCA suffix typically denotes a specific package type and temperature grade within the Skyworks portfolio.
Replacement Considerations
Check Skyworks documentation for direct replacements such as SI83404AAA-IF or SI83414AAA-IF, noting differences in on-resistance and switching speeds. Verify pin-to-pin compatibility before substitution.
