AAT4296IJS-T1

Overview

The AAT4296IJS-T1 is a five-channel push/pull I/O expander from Skyworks Solutions. It operates within a supply voltage range of 1.8V to 5.5V and features independent channels controlled via an S2Cwire serial interface on the EN/SET pin. The device includes P-channel high-side switches with a typical on-resistance of 3Ω at 3.6V and N-channel low-side switches with a typical on-resistance of 2Ω. Quiescent current is typically 3μA when enabled and drops below 1μA in shutdown mode. It supports output turn-on times of up to 2.7μs and turn-off times of up to 2.1μs. Rated for -40°C to +85°C, it is housed in an 8-pin SC70JW package.

Feature Summary

• Five independent push/pull output channels for I/O expansion or load switching
• S2Cwire serial interface allows control of all outputs using a single GPIO pin
• Integrated auto-discharge function connects outputs to ground when disabled
• Low quiescent current consumption suitable for battery-powered applications

Applications

• Microcontroller general purpose input/output (I/O) expansion
• LED indicator lamps and RGB LED fashion lighting
• Audio and RF circuit power gating
• Portable electronic devices requiring multiple low-power switching

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm the specific ordering suffix matches the required package type. Check for recent product discontinuation notifications as availability may be limited. Ensure compliance with RoHS standards if applicable to your manufacturing process.

Selection Notes

Select this component when space constraints require consolidating multiple GPIO lines into a single control signal. The S2Cwire interface reduces microcontroller pin usage. Verify that the thermal dissipation limits accommodate the expected load currents across all active channels simultaneously.

Part Context

This part belongs to the AAT4296/4298 SmartSwitch family, designed for application-specific power MOSFET needs. It serves as a bridge between digital logic controllers and analog loads, simplifying system architecture by replacing discrete switch arrays with a single integrated solution.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.