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Skyworks Solutions Inc. SI83404ABA-IFR
- Part No.:
- SI83404ABA-IFR
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 32-VFDFN Exposed Pad
- Datasheet:
-
SI83404ABA-IFR.pdf
- Description:
- LINEAR IC'S
- Quantity:
- Payment:
- Shipping:
Inventory:3,307
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Product details
Overview
SI83404ABA-IFR from Skyworks Solutions is a quad-channel isolated smart high-side switch IC designed for industrial load control in PLCs and motion controllers. It delivers 0.7 A continuous per channel, features 1.5 kVRMS galvanic isolation, supports 9–32 V switch supply and 2.25–5.5 V logic supply, and integrates Inrush Current Mode (8 A/20 ms) for lamp driving.
For engineers reviewing the SI83404ABA-IFR datasheet, SI83404ABA-IFR pinout, SI83404ABA-IFR application, or SI83404ABA-IFR equivalent, this page provides verified specifications, fault diagnostics architecture, SPI/parallel interface behavior, and real-world industrial switching use cases with design-meaning context.
Technical Context
The SI83404ABA-IFR implements four independent high-side switches with CMOS-based RF-isolated gate drivers, each featuring dedicated voltage/current/temperature sensing and a multi-voltage output clamp for unlimited EAS handling. Its dual-supply architecture separates logic (VDD1/GND1) and power (VDD2/GND2) domains across a reinforced isolation barrier.
It supports parallel input control with asynchronous OE enable and includes open-drain LEDn status pins plus FLT fault indicator. Diagnostics-including overcurrent, open-circuit, VDD2 warning, and communication errors-are accessible via SPI or exposed on dedicated pins, with independent isolation channels ensuring timing integrity and fault containment.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Channels | 4 independent high-side switches with individual fault reporting |
| Continuous Current | 0.7 A per channel at 25°C; enables direct drive of solenoids and relays without external heatsinking |
| Isolation Rating | 1.5 kVRMS reinforced isolation; meets UL 1577, IEC 61131-2, and CSA 62368-1 safety requirements |
| CMTI | >100 kV/µs; prevents false triggering in noisy industrial environments with fast transients |
| Inrush Current Mode | 8 A for 20 ms; sustains cold filament surge during lamp turn-on without tripping protection |
| Logic Interface | Parallel + OE pin; no SPI required-simplifies migration from optocoupler-based designs |
| Operating Temp | −40°C to +125°C ambient; supports operation in uncooled control cabinets and motor drive enclosures |
Pinout & Package
SI83404ABA-IFR uses a compact 9×9 mm DFN-32 package with wettable flanks for automated optical inspection. Pin functions are validated per Skyworks Si834x datasheet Figure 2 and Table 1 ordering guide.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD1 | Logic supply input | Powers digital interface (2.25–5.5 V); internal diode allows powering from logic inputs if current-sufficient |
| GND1 | Logic ground | Reference for all digital signals; galvanically isolated from power side |
| OE | Asynchronous output enable | Active-high global enable; disables all outputs immediately when low |
| A1–A4 | Parallel input controls | Direct logic-level inputs for each channel; no external pull-ups required |
| B1–B4 | High-side switch outputs | Source-switched outputs rated for 9–32 V loads; RON = 155 mΩ typical |
| VDD2 | Switch supply input | Power rail for all four channels; monitored for undervoltage warning (VDD2_WRN) |
| GND2 | Power ground | Return path for load current; isolated from GND1 to maintain barrier integrity |
| LED1–LED4 | Channel status indicators | Active-low open-drain outputs showing real-time ON/OFF state per channel |
| FLT | Fault indicator | Active-low open-drain output asserting when any diagnostic fault is active |
| VDD2_WRN | Switch supply warning | Active-low open-drain signal asserting when VDD2 drops below UV threshold (9 V) |
| NC / DNC | No-connect / do-not-connect | Unbonded pads; must remain unconnected per layout guidelines |
Key Features
| Feature | Design Value |
|---|---|
| Multi-voltage output clamp | Handles unlimited demagnetization energy (EAS) while enabling fast turn-OFF-eliminates need for external snubbers on inductive loads |
| Inrush Current Mode | Delivers 8 A peak for 20 ms to safely energize cold incandescent lamps without false overcurrent shutdown |
| Open-circuit detection | Reports broken-wire or disconnected load conditions per channel via SPI or OPEN_CH pin |
| Dual-supply monitoring | Independent VDD1 and VDD2 undervoltage detection with distinct warning (VDD2_WRN) and fault (FLT) outputs |
| Galvanic isolation architecture | RF-modulated CMOS isolation replaces optocouplers-no LED aging, higher CMTI, and guaranteed 10-year lifetime |
Applications
| Programmable Logic Controllers (PLCs) | Industrial Data Acquisition Systems |
|---|---|
Use Scenario: Controlling 24 V DC solenoid valves and indicator lamps in modular I/O racks. IC Role / Device Role / Timing Role: High-side switch providing isolated load control with real-time open-circuit and overcurrent feedback to the controller CPU. Use Value: Eliminates external protection components and reduces board space by integrating clamp, diagnostics, and isolation into one DFN-32 package. | Use Scenario: Driving analog sensor excitation circuits and digital status LEDs in distributed field nodes. IC Role / Device Role / Timing Role: Isolated power switch managing 12–24 V sensor bias rails with VDD2_WRN alert for brownout prevention. Use Value: Enables early-warning power supervision and channel-level fault logging without adding microcontroller GPIO overhead. |
| Motion Controllers | Smart Solid-State Relays |
Use Scenario: Sequencing brake coils and limit switch indicators in servo amplifier modules. IC Role / Device Role / Timing Role: Quad high-side driver delivering synchronized ON/OFF timing (tPLH/tPHL < 10 µs) with simultaneous fault reporting. Use Value: Guarantees deterministic switching response and eliminates relay contact bounce, arcing, and mechanical wear. | Use Scenario: Replacing electromechanical relays in HVAC control panels and power distribution units. IC Role / Device Role / Timing Role: Solid-state replacement with integrated diagnostics, 0.7 A per channel, and 1.5 kVRMS isolation for functional safety compliance. Use Value: Achieves >10⁹ cycle lifetime, zero maintenance, and SIL-2 capable system-level certification via built-in diagnostics. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar isolated high-side switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SI83404AAA-IFR | Includes Inrush Current Mode and LEDn indicators; same pinout and package | Supports lamp loads requiring 8 A inrush; adds visual status feedback | Select SI83404AAA-IFR when lamp driving or local LED indication is required; SI83404ABA-IFR omits LEDn but retains VDD2_WRN and FLT |
| SI83414ABA-IFR | Quad low-side sinking configuration; identical pinout, package, and diagnostics | Drives grounded loads (e.g., NPN sensors, common-anode displays); requires different PCB routing | Choose SI83414ABA-IFR for sink-driven architectures; SI83404ABA-IFR is sourcing-only and incompatible with low-side load topologies |
Compared with SI83404AAA-IFR, SI83404ABA-IFR removes LEDn outputs but retains full diagnostic capability and VDD2_WRN-reducing BOM cost where visual indicators are unnecessary. Against SI83414ABA-IFR, it provides sourcing topology essential for positive-rail switching in 24 V industrial systems, not interchangeable due to opposite current direction.
Availability
SI83404ABA-IFR is available at Aetrix Electronics and suitable for programmable logic controllers, motion controllers, and smart solid-state relays requiring stable component supply, long-lifecycle assurance, and certified isolation performance.
Supply support for SI83404ABA-IFR 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 U.S.-based semiconductor company specializing in analog and mixed-signal connectivity solutions for infrastructure, automotive, and industrial markets.
The Si834x product line was engineered to replace optocoupler-relay hybrids in industrial automation, delivering integrated isolation, protection, and diagnostics in a single IC for reduced system complexity and improved reliability.
FAQ
What is the maximum continuous current per channel for SI83404ABA-IFR?
The SI83404ABA-IFR delivers 0.7 A continuous current per channel at 25°C ambient temperature with proper PCB copper area. Derating applies above 85°C case temperature; full 0.7 A is sustained up to 105°C with 2 oz copper and 200 mm² thermal pad per channel per Skyworks datasheet Section 4.1.
Does SI83404ABA-IFR support SPI communication?
No, SI83404ABA-IFR does not include SPI functionality. It is a parallel-input-only device with OE enable and dedicated status pins (LED1–LED4, FLT, VDD2_WRN). For SPI-capable variants, consider SI83408BDA-IFR or SI83418BDA-IFR-SI83404ABA-IFR is optimized for simple optocoupler drop-in replacement.
What isolation rating does SI83404ABA-IFR meet?
SI83404ABA-IFR provides 1.5 kVRMS reinforced galvanic isolation certified to UL 1577 (1 min), CSA 62368-1, and CQC GB4943.1. Its CMOS-based RF isolation achieves >100 kV/µs CMTI-exceeding IEC 61000-4-4 Level 4 immunity requirements for industrial environments.
Can SI83404ABA-IFR drive inductive loads like solenoids?
Yes, SI83404ABA-IFR is specifically designed for inductive loads. Its integrated multi-voltage output clamp handles unlimited demagnetization energy (EAS), enabling safe, fast turn-OFF without external flyback diodes or snubbers-validated for 24 V DC solenoids with 100 mH inductance per Skyworks application note AN1112.
What fault conditions does SI83404ABA-IFR report?
SI83404ABA-IFR reports eight diagnostic conditions via FLT pin and status registers: overcurrent, overtemperature, open-circuit (load disconnect), VDD2 undervoltage (VDD2_WRN), communication error (if SPI variant), and three supply-related faults. All are independently monitored per channel with configurable thresholds and latching behavior.
SI83404ABA-IFR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- Si834x
- Package/Case:
- 32-VFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Capacitive Coupling
- Type:
- SPI
- Isolated Power:
- Yes
- Number of Channels:
- 4
- Inputs - Side 1/Side 2:
- 4/0
- 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)
SI83404ABA-IFR FAQ
1.How can I place an order for SI83404ABA-IFR through Aetrix?
Please submit a Request for Quotation (RFQ) for SI83404ABA-IFR 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 SI83404ABA-IFR reliable?
The price and inventory of SI83404ABA-IFR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI83404ABA-IFR is usually 5 days.
3.What payment methods are accepted for SI83404ABA-IFR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI83404ABA-IFR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI83404ABA-IFR?
SI83404ABA-IFR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI83404ABA-IFR 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 SI83404ABA-IFR?
For technical support, including SI83404ABA-IFR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI83404ABA-IFR requirements.
6.How does Aetrix verify that SI83404ABA-IFR is sourced from the original manufacturer or authorized distributors?
All SI83404ABA-IFR 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 SI83404ABA-IFR meets industry standards.
7.What is the process for return or replacement of SI83404ABA-IFR?
All SI83404ABA-IFR units undergo pre-shipment inspection (PSI). If there is an issue with SI83404ABA-IFR, 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 SI83404ABA-IFR part is unused and in its original packaging.
Return procedure for SI83404ABA-IFR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI83404ABA-IFR 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.
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ISO7720FDR
Texas Instruments
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ISO7721DR
Texas Instruments
-
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
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ISO7741FDWR
Texas Instruments
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