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SI83404BBA-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 SI83404BBA-IF is a four-channel isolated smart switch manufactured by Skyworks Solutions Inc. It integrates high-side and low-side power switches with digital isolation in a single package. The device supports an operating supply voltage range of 2.25 V to 32 V. Each channel provides a continuous output current of 700 mA with a maximum current limit of 880 mA. The typical on-resistance is 155 mΩ, with a maximum turn-on time of 2.5 µs and turn-off time of 3.5 µs. It operates within a temperature range of -40°C to +125°C.
Feature Summary
- Integrates four independent high-side and low-side power channels with integrated digital isolation for robust signal transmission.
- Features proportional delay control to minimize ground bounce and electromagnetic interference during switching events.
- Includes comprehensive protection mechanisms such as overcurrent limiting, thermal shutdown, and undervoltage lockout.
Applications
- Industrial automation systems requiring isolated power distribution
- Automotive electronic control units (ECUs) and lighting modules
- Medical equipment with strict isolation safety requirements
Procurement Notes
Verify the specific suffix 'IF' against the manufacturer's official datasheet to confirm pinout compatibility and tape-and-reel packaging specifications. Ensure that the selected variant matches the required isolation voltage ratings and thermal performance characteristics for the target application environment before finalizing procurement orders.
Selection Notes
Select this component when designing circuits that require multiple isolated outputs from a single controller. Compare the 155 mΩ on-resistance against load requirements to manage power dissipation. Consider the proportional delay feature if minimizing switching noise is critical. Verify that the 32-DFN package fits the available PCB real estate and thermal management constraints.
Part Context
This part belongs to the Si834xx family of isolated smart switches designed for high-reliability applications. It combines power switching capabilities with capacitive isolation technology. The family offers various channel counts and resistance options to suit different power distribution needs in industrial and automotive sectors.
Replacement Considerations
The SI83404AAA-IF is a similar four-channel isolated smart switch within the same product family. Verify differences in on-resistance and switching speeds before substitution.
