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Skyworks Solutions Inc. SI83402BBA-IF
- Part No.:
- SI83402BBA-IF
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 32-VFDFN Exposed Pad
- Datasheet:
-
SI83402BBA-IF.pdf
- Description:
- LINEAR IC'S
- Quantity:
- Payment:
- Shipping:
Inventory:3,342
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Product details
Overview
SI83402BBA-IF from Skyworks Solutions is a 2-channel isolated high-side smart switch IC with galvanic CMOS isolation, 1.25 A continuous current per channel (78 mΩ RON), 9–32 V switch supply, and 2.25–5.5 V logic interface-designed for industrial PLC output modules driving solenoids and relays under harsh EMI conditions.
For engineers reviewing the SI83402BBA-IF datasheet, SI83402BBA-IF pinout, SI83402BBA-IF application, or SI83402BBA-IF equivalent, this page delivers verified specifications, fault-aware switching behavior, SPI-diagnostic capability, and real-world industrial load interface guidance-not generic timing or power device summaries.
Technical Context
The SI83402BBA-IF implements two independent high-side switches with RF-based galvanic isolation across a single die, each featuring integrated voltage/current/temperature sensing, multi-voltage smart clamp for unlimited EAS handling, and asynchronous OE control. Its parallel-only interface excludes SPI pins but retains dedicated open-drain LED status outputs and FLT fault indicator.
Switch operation follows strict truth-table-defined state transitions dependent on VDD1/VDD2 supply states, OE assertion, and internal fault detection-including overcurrent, overtemperature, open-load, and undervoltage warnings-all reported via discrete indicator pins without requiring host MCU intervention.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Channels | 2-channel high-side sourcing switch with independent isolation and protection |
| Continuous Current | 1.25 A per channel at 25 °C ambient; enables direct drive of 24 V solenoids and small relays |
| RON | 78 mΩ typical; minimizes conduction loss and thermal rise in compact industrial PCB layouts |
| Isolation Rating | 1.5 kVRMS for 1 minute (UL 1577 pending); supports reinforced insulation in IEC 61131-2-compliant systems |
| CMTI | >100 kV/µs; ensures reliable operation in noisy motor-control and factory-floor environments |
| Logic Supply Range | 2.25–5.5 V; interoperable with low-voltage MCUs including ARM Cortex-M0+ and RISC-V controllers |
| Switch Supply Range | 9–32 V; matches standard industrial 24 V DC bus with ±20 % tolerance margin |
| Operating Temp | –40 to +125 °C; qualified for extended life in uncooled control cabinets and outdoor enclosures |
Pinout & Package
SI83402BBA-IF uses a compact 9×9 mm DFN-32 package with exposed thermal pad (EP) for enhanced power dissipation in high-density industrial modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD1 | Logic supply input | Powers digital interface and isolation transmitter; requires local 2.25–5.5 V regulation |
| GND1 | Logic ground | Reference for all digital inputs and SPI signals (not used here); must be separated from GND2 |
| OE | Asynchronous output enable | Active-high global enable; forces all outputs OFF when low-critical for safe system reset |
| A1, A2 | Parallel input controls | Direct logic-level inputs for channel 1 and 2; no pull-up/pull-down required |
| B1, B2 | High-side switch outputs | Source-switched outputs rated for 1.25 A; connect to load anode; cathode to VDD2 |
| VDD2 | Switch supply input | Power rail for high-side drivers; accepts 9–32 V; must be decoupled near package |
| GND2 | Power ground | Return path for switched loads; electrically isolated from GND1; connects to VDD2 return |
| FLT | Fault indicator | Active-low open-drain output asserting on any detected fault (overtemp, overcurrent, UV) |
| LED1, LED2 | Channel status indicators | Active-low open-drain outputs reflecting real-time ON/OFF state of B1/B2 |
| VDD2_WRN | Switch supply warning | Active-low open-drain flag asserting when VDD2 drops below 18 V threshold (warning level) |
Key Features
| Feature | Design Value |
|---|---|
| Galvanic CMOS isolation | Eliminates LED aging and CTR drift of optocouplers; enables >100 kV/µs CMTI and 1.5 kVRMS safety rating |
| Smart multi-voltage clamp | Handles unlimited demagnetization energy (EAS) during inductive turn-off-prevents voltage overshoot and contact arcing |
| Inrush Current Mode | Not supported on SI83402BBA-IF (per Ordering Guide Table 1); optimized for steady-state solenoid/relay loads |
| Open-circuit detection | Reports open-load condition per channel via FLT and LEDx pins-enables predictive maintenance in PLC I/O modules |
| Dedicated fault & status pins | Provides immediate hardware-level visibility into switch health without SPI polling-reduces MCU firmware overhead |
| IEC 61131-2 compliance | Meets Type 1/Type 3 input/output requirements for industrial programmable controllers-reduces system certification effort |
Applications
| Programmable Logic Controller (PLC) Output Module | Industrial Motion Controller |
|---|---|
Use Scenario: Driving 24 V DC solenoid valves and miniature relays in modular PLC backplanes with space-constrained DIN-rail mounting. IC Role / Device Role / Timing Role: High-side isolated switch providing galvanically separated, fault-protected load control with sub-10 µs update rate. Use Value: Replaces discrete optocoupler + MOSFET + protection circuitry with single IC-reducing BOM count by 60 % and improving long-term reliability. | Use Scenario: Controlling pneumatic actuators and brake coils in servo-driven motion systems where EMI immunity and fast response are critical. IC Role / Device Role / Timing Role: Isolated high-side driver delivering precise ON/OFF timing with built-in overtemperature shutdown to prevent coil burnout. Use Value: Enables deterministic 10 µs switching and real-time fault reporting-eliminating need for external current-sense amplifiers and thermal sensors. |
| Smart Solid-State Relay (SSR) Board | Industrial Data Acquisition I/O Card |
Use Scenario: Building compact, fanless SSR replacements for legacy electromechanical relays in HVAC and building automation panels. IC Role / Device Role / Timing Role: Dual-channel high-side switch with integrated diagnostics acting as core load interface in SSR module design. Use Value: Provides 1.25 A/channel capability with open-load and overvoltage warnings-extending field lifetime beyond 10 years without maintenance. | Use Scenario: Adding isolated digital output capability to modular DAQ cards used in test benches and process monitoring systems. IC Role / Device Role / Timing Role: Galvanically isolated output stage enabling safe connection to external 24 V field devices while maintaining signal integrity. Use Value: Delivers 9–32 V wide-range compatibility and CMTI >100 kV/µs-ensuring stable operation near variable-frequency drives and welding equipment. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-side isolated switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SI83402BAA-IF | Same 2-channel high-side architecture and pinout, but includes VDD2_WRN and LED1/LED2 indicators-SI83402BBA-IF omits VDD2_WRN | SI83402BAA-IF supports switch supply warning; SI83402BBA-IF does not report VDD2 undervoltage | Select SI83402BBA-IF when only basic channel status and fault indication are needed-reducing external pull-up count |
| SI83412BAA-IF | 2-channel low-side sinking variant with identical package, RON, and current rating-but reversed output topology and pin assignments | Requires load connected between VDD2 and B1/B2 (sink configuration), not high-side sourcing | Choose SI83412BAA-IF only if system grounding architecture mandates low-side switching-requires PCB redesign |
Compared with SI83402BBA-IF, SI83402BAA-IF adds VDD2_WRN functionality for supply monitoring without changing layout, while SI83412BAA-IF shifts to low-side topology-demanding new trace routing and load placement to maintain safety isolation boundaries.
Availability
SI83402BBA-IF is available at Aetrix Electronics and suitable for industrial programmable logic controllers, motion controllers, and smart solid-state relay designs requiring stable component supply, long-lifecycle assurance, and full traceability from wafer to shipment.
Supply support for SI83402BBA-IF includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Skyworks Solutions is a global semiconductor company specializing in analog and mixed-signal connectivity solutions for infrastructure, automotive, and industrial markets.
The Si834x product line was engineered specifically for industrial control applications requiring robust galvanic isolation, integrated diagnostics, and high-reliability switching-replacing aging optocoupler-based architectures with CMOS-isolated smart switches.
FAQ
What is the maximum continuous current rating per channel for SI83402BBA-IF?
The SI83402BBA-IF supports 1.25 A continuous current per channel at 25 °C ambient temperature with proper PCB copper area and airflow. Derating applies above 85 °C case temperature per the thermal characteristics table in the datasheet. This rating enables direct drive of standard 24 V solenoids and miniature relays without external heatsinking.
Does SI83402BBA-IF include SPI interface capability?
No, SI83402BBA-IF uses a parallel-only interface with dedicated A1/A2 inputs and LED1/LED2 status outputs. It lacks MOSI, MISO, SCLK, and NSS pins-unlike SPI-capable variants such as SI83406BDA-IF. All diagnostics are reported through discrete open-drain pins (FLT, LED1, LED2, VDD2_WRN), eliminating MCU firmware complexity.
What isolation voltage rating does SI83402BBA-IF achieve?
SI83402BBA-IF provides 1.5 kVRMS galvanic isolation for 1 minute per UL 1577 (pending certification), with transient immunity exceeding 100 kV/µs. This meets reinforced insulation requirements for IEC 61131-2 Type 3 industrial outputs and supports safe operation in 250 VRMS working voltage environments.
Can SI83402BBA-IF drive inductive loads like solenoids safely?
Yes, SI83402BBA-IF integrates a patented multi-voltage smart clamp that handles unlimited demagnetization energy (EAS) during inductive turn-off. This prevents destructive voltage spikes, reduces contact arcing, and enables fast, reliable switching of 24 V solenoids and relay coils without external snubbers or TVS diodes.
What fault conditions does SI83402BBA-IF detect and report?
SI83402BBA-IF detects and reports overtemperature, overcurrent, open-load (open-circuit), and VDD2 undervoltage via dedicated FLT, LED1, and LED2 pins. It does not support Inrush Current Mode (per Ordering Guide), nor does it report communication errors-those require SPI-enabled variants like SI83406BDA-IF.
SI83402BBA-IF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- Si834x
- Package/Case:
- 32-VFDFN Exposed Pad
- Packaging:
- Tray
- Product Status:
- Active
- Technology:
- Capacitive Coupling
- Type:
- SPI
- Isolated Power:
- Yes
- Number of Channels:
- 2
- Inputs - Side 1/Side 2:
- 2/0
- Channel Type:
- Unidirectional
- Voltage - Isolation:
- 1500Vrms
- Common Mode Transient Immunity (Min):
- 100kV/µs
- Data Rate:
- -
- Propagation Delay tpLH / tpHL (Max):
- 3.5µs, 4.5µs
- Pulse Width Distortion (Max):
- -
- Rise / Fall Time (Typ):
- 2µs, -
- Voltage - Supply:
- 2.25V ~ 5.5V, 9V ~ 32V
- Grade:
- -
- Qualification:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-DFN (9x9)
SI83402BBA-IF FAQ
1.How can I place an order for SI83402BBA-IF through Aetrix?
Please submit a Request for Quotation (RFQ) for SI83402BBA-IF on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for SI83402BBA-IF reliable?
The price and inventory of SI83402BBA-IF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI83402BBA-IF is usually 5 days.
3.What payment methods are accepted for SI83402BBA-IF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI83402BBA-IF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI83402BBA-IF?
SI83402BBA-IF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI83402BBA-IF order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for SI83402BBA-IF?
For technical support, including SI83402BBA-IF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI83402BBA-IF requirements.
6.How does Aetrix verify that SI83402BBA-IF is sourced from the original manufacturer or authorized distributors?
All SI83402BBA-IF products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that SI83402BBA-IF meets industry standards.
7.What is the process for return or replacement of SI83402BBA-IF?
All SI83402BBA-IF units undergo pre-shipment inspection (PSI). If there is an issue with SI83402BBA-IF, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The SI83402BBA-IF part is unused and in its original packaging.
Return procedure for SI83402BBA-IF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI83402BBA-IF Tags
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ISO1212DBQR
Texas Instruments
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ISO6721BDR
Texas Instruments
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SI8710AC-B-ISR
Skyworks Solutions Inc.
-
ISO7720FDR
Texas Instruments
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ISO7721DR
Texas Instruments
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ISO7721FDR
Texas Instruments
-
SI8710CC-B-ISR
Skyworks Solutions Inc.
-
ISO6741FQDWRQ1
Texas Instruments
-
ISO7721DWVR
Texas Instruments
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ISO7762FDBQR
Texas Instruments
-
ISO7741DWR
Texas Instruments
-
ISO7741FDWR
Texas Instruments
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