Si834x Data Sheet Isolated Smart Switch KEY FEATURES The Si834x provides four isolated high-side or low-side switches with low R . These switches ON High-side or low-side switch are ideal for driving resistive and inductive loads like solenoids, relays, and lamps commonly found in industrial control systems like Programmable Logic Controllers (PLC). Each switch is Logic Supply: 2.25 V 5.5 V galvanically isolated for safety using Skyworks groundbreaking CMOS-based isolation technol- Switch Supply: 9 V 32 V ogy, offering better reliability and performance than the traditional optocoupler-based isolation, Fast (10 s) update rate including high Common-Mode Transient Immunity (CMTI) over 100 kV/s. High continuous current (700 mA) and low R (145 m) ON The logic interface supports low-power 2.25 V MCUs, while the switches offer a wide supply range of 9 V 32 V ideal for industrial voltage levels. The switches are capable of providing Unique multi-voltage output clamp 0.7 A depending on load conditions. Each switch offers complete fault protection. An innovative Unlimited demagnetization (E ) AS multi-voltage clamp efficiently handles an unlimited amount of demagnetization energy (E ). AS Efficient and fast turn-OFF The over-current protection includes an Inrush Current Mode to drive loads like lamps. Addi- Inrush Current Mode: 8 A for 20 ms tionally, the device power supplies are monitored, and the switches are safely constrained or Current-limited overload protection shutdown on faults. Over-temperature protection Eight diagnostics are reported through the logic interface, offering an unprecedented level of Undervoltage protected supplies details and control. Diagnostics are configured, monitored, and cleared via the Serial Periph- Up to 8 different diagnostics eral Interface (SPI) or exposed on active-low, open-drain indicator pins for easy access and Multiple power supply reports combination. Diagnostic communication is independent of switch control signals, with separate Over-current, over-temperature isolation channels and constant error checking, ensuring long-term reliability. Open-circuit warning Safety Approvals (Pending) Applications Communication error UL 1577 recognized: Up to 1500 Vrms for 1 minute Programmable logic controllers Channel status indicators CSA certified under: IEC 60950-1, 62368-1 Dedicated fault indicator Industrial data acquisition VDE certification conformity: VDE 0884-10 Disable outputs asynchronously Motion controllers Control 128 channels via SPI CQC certification approval: GB4943.1 Smart solid-state relays 1.5 kV safety rated isolation RMS NC NC GND2 GND2 Transient immunity > 100 kV/s A1 DNC A1 DNC Compliant to IEC 61131-2 A2 A2 GND2 VDD2 Compact 9x9 DFN-32 package A3 VDD2 A3 GND2 5 kV ESD Protection A4 B1 A4 B1 -40 125 C operating temperature OE OE VDD2 GND2 GND1 GND1 B2 B2 FLT FLT VDD2 GND2 VDD1 B3 VDD1 B3 GND1 GND1 VDD2 GND2 MOSI THRU B4 VDD2 WRN B4 NSS LED1 VDD2 GND2 SCLK GND2 LED2 VDD2 Sensors & Sensors & Protection Protection VDD2 VDD2 MOSI LED3 MISO DNC LED4 DNC NC GND2 NC GND2 Si83408AFA-IF Si83414AAA-IF Skyworks Solutions, Inc. Phone 781 376-3000 Fax 781 376-3100 sales skyworksinc.com www.skyworksinc.com 1 Rev. 0.5 Skyworks Proprietary Information Products and Product Information are Subject to Change Without Notice December 21, 2021 1 Status & Diagnostics 4x Input Interface 6x Transmitters/ 1x Receiver Isolation Barrier 6x Receivers/ 1x Transmitter 4x High-Side Switches Status & Diagnostics 4x Input Interface 6x Transmitters/ 1x Receiver Isolation Barrier 6x Receivers/ 1x Transmitter 4x Low-Side SwitchesSi834x Data Sheet Ordering Guide 1. Ordering Guide Table 1.1. Si834x Ordering Guide 1 Continuous Channel Low Open Clear Output 2 Ordering Part Output Iso. Input Switch Output Status Voltage Channel Fault Number Channels Rating Interface Current Indicators Indicator Indicator Input Type Products Available Now Si83404AAA-IF Parallel Yes No No Yes Si83408ADA-IF SPI No No No Sourcing 4 0.7 A Parallel/ Si83408AFA-IF No No No No SPI 1.5 kVrms Si83414AAA-IF Parallel Yes No No Yes Si83418ADA-IF SPI No No No Sinking 4 0.7 A Parallel/ Si83418AFA-IF No No No No SPI Contact Skyworks Sales for These Options Si83404ABA-IF No Yes No Sourcing Parallel 4 0.7 A Yes Si83404ACA-IF No No Yes 1.5 kVrms Si83414ABA-IF No Yes No Sinking Parallel 4 0.7 A Yes Si83414ACA-IF No No Yes Note: 1. Output switch can source current in a high-side, open-source configuration or sink current in a low-side, open-drain configuration. 2. SPI provides access to all diagnostic, configuration, and channel status information. Devices without a parallel interface allow output channel control through the SPI as well. 3.S andS are used interchangeably. 4. An at the end of the Ordering Part Number indicates tape and reel option. Skyworks Solutions, Inc. Phone 781 376-3000 Fax 781 376-3100 sales skyworksinc.com www.skyworksinc.com 2 Rev. 0.5 Skyworks Proprietary Information Products and Product Information are Subject to Change Without Notice December 21, 2021 2