FSA550BUCX

Analog Switches - Special Purpose Overview

The FSA550BUCX is a depletion mode analog switch IC manufactured by onsemi, featuring four independent channels in a 1 x 4PST configuration. Housed in a WLCSP-12 package, it operates on a single supply voltage ranging from 1.6 V to 3 V with a maximum power consumption of 70 uA. The device supports a DC switch current of 350 mA and exhibits a maximum on-resistance of 800 mOhms. It functions within an operating temperature range of -40°C to +85°C, with a typical turn-on time of 120 ns and turn-off time of 160 us.

Analog Switches - Special Purpose Feature Summary

• Depletion mode technology enables normally-on operation for reliable signal path management
• Low profile WLCSP packaging facilitates high-density board layouts
• Single-supply operation simplifies power design requirements

Analog Switches - Special Purpose Applications

• Portable electronic devices requiring low-power signal routing
• Audio signal switching applications
• Battery-powered consumer electronics

Analog Switches - Special Purpose Procurement Notes

Verify component authenticity through authorized distribution channels due to end-of-life status. Confirm RoHS compliance details via official documentation before integration. Ensure storage conditions align with moisture sensitivity level specifications to prevent package damage during assembly processes.

Analog Switches - Special Purpose Selection Notes

Select this component when low standby current and small footprint are critical constraints. Compare on-resistance values against load requirements to ensure signal integrity. Verify that the 1.6 V minimum supply voltage meets system power rails. Consider the WLCSP-12 package dimensions for PCB space optimization.

Analog Switches - Special Purpose Part Context

This part belongs to the FSA550 series of depletion mode switches designed for portable applications. It complements other onsemi analog switches like the FSA551, which offers dual SPST configurations. The series targets markets demanding minimal power consumption and compact form factors for mobile and wearable technologies.

Analog Switches - Special Purpose Replacement Considerations

Publicly confirmed substitute part numbers are not available in verified sources. Due to the end-of-life status, direct replacements may require redesigning the circuit layout to accommodate different package types or pin configurations.