RT9284AGJ5E

Overview

The RT9284AGJ5E is a constant current switching regulator designed for white LED applications, manufactured by Richtek Technology Corporation. It operates within a supply voltage range of 2.7V to 5.5V and delivers a maximum output voltage of 20V. The device features a typical operating supply voltage of 3.3V or 5V, with a maximum supply current of 3000uA. It supports five segments and dissipates up to 455mW of power. The component is housed in a 5-pin TSOT-23 package with dimensions of 3.1mm length, 1.8mm width, and 0.9mm height. It functions reliably across an operating temperature range of -40°C to 85°C.

Feature Summary

• Integrates a high-performance constant current switching regulator topology optimized for driving white LEDs.
• Supports multi-segment LED configurations through dedicated segment control capabilities.
• Features low supply current consumption to enhance energy efficiency in portable applications.
• Includes internal protection mechanisms to ensure stable operation under varying thermal conditions.

Applications

• White LED backlighting systems
• Portable electronic device illumination
• Multi-segment LED display drivers

Procurement Notes

Verify the specific suffix 'GJ5E' against the manufacturer's official datasheet to confirm pinout compatibility and electrical specifications. Ensure the component status is active before procurement, as availability may vary. Cross-reference the 5-pin TSOT-23 package dimensions with your PCB footprint requirements. Confirm RoHS compliance and environmental declarations if required for your manufacturing process. Check for any recent product change notices that might affect performance or packaging.

Selection Notes

Select this component when designing circuits requiring a compact solution for white LED driving with strict space constraints due to its TSOT-23-5 package. Consider its 2.7V to 5.5V input range suitability for battery-powered devices. Evaluate the 20V max output voltage against the forward voltage requirements of your LED string. Assess the 3000uA supply current impact on overall system power budget. Verify that the 5-segment capability aligns with your display architecture needs.

Part Context

This part belongs to the RT9284 series from Richtek Technology Corporation, specialized for LED driver applications. The series focuses on providing efficient power management for lighting solutions in consumer electronics. The RT9284AGJ5E variant specifically targets small form factor designs, offering integrated switching regulation in a minimal footprint compared to discrete solutions.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Consult the manufacturer's official replacement guide or contact technical support for verified alternatives. Do not assume cross-compatibility with other LED driver ICs without verifying electrical parameters and pin assignments.

FAQ

What is the maximum output voltage capability of the RT9284AGJ5E?

The maximum output voltage is 20V, suitable for driving multiple white LEDs in series.

Does the RT9284AGJ5E support PWM dimming?

The provided documentation does not explicitly specify PWM dimming support for this specific part number; refer to the official datasheet for detailed control interface information.

What is the operating temperature range for this component?

The component operates within a temperature range of -40°C to 85°C (TA).