AS1123-BQFT

Overview

The AS1123-BQFT is a linear LED driver IC featuring 16 outputs, manufactured by ams-OSRAM. It operates within a supply voltage range of 2.7V to 5.5V and supports an output current of 40mA per channel. The device utilizes linear shift register dimming for precise control. Designed for surface mount installation, it is housed in a 24-TQFN (4x4) package with an exposed pad. The component functions reliably across a temperature range of -40°C to +85°C.

Feature Summary

• Integrates 16 independent output channels for high-density LED arrays
• Employs linear shift register architecture for synchronized dimming control
• Supports wide input voltage operation suitable for battery-powered systems

Applications

• Mobile device backlighting
• Portable consumer electronics illumination
• General indicator lighting applications

Procurement Notes

Verify the obsolete status of this part number before design finalization. Confirm availability through authorized distributors or secondary markets. Ensure compatibility with existing PCB footprints and thermal management requirements. Review latest datasheets for any specific handling precautions related to the exposed pad thermal dissipation.

Selection Notes

Select this component when 16-channel linear dimming is required in a compact form factor. Consider the 40mA output limit and 24-pin QFN package constraints. Evaluate thermal performance under maximum load conditions. Compare against newer generations if long-term supply assurance is critical for the product lifecycle.

Part Context

This IC belongs to the AS1122/AS1123 family of linear LED drivers from ams-OSRAM. These components are designed for portable applications requiring efficient light control. The AS1123 variant specifically offers 16 channels, distinguishing it from the 12-channel AS1122 model. Both share similar interface protocols and packaging styles.

Replacement Considerations

Public confirmed substitute part numbers: None identified.