AS1122B-BQFT

Overview

The AS1122B-BQFT is a linear LED driver IC manufactured by ams OSRAM, designed for high-precision lighting applications. It features twelve independent output channels, each capable of delivering up to 40mA of current. The device operates within a supply voltage range of 2.7V to 3.6V and supports output voltages up to 30V. Packaged in a 24-VFQFN exposed pad (4x4mm) surface-mount format, it integrates internal switches for efficient control. The component functions reliably across an operating temperature range of -40°C to +85°C ambient temperature.

Feature Summary

• Twelve-channel linear architecture with individual channel control
• Integrated internal switching mechanism for power management
• Surface-mount design optimized for compact PCB layouts

Applications

• LED backlighting systems
• Digital signage displays

Procurement Notes

Verify part status as obsolete before integration into new designs. Confirm package compatibility with existing footprints. Review latest datasheet revisions for any pinout or electrical characteristic updates. Ensure supply chain stability due to end-of-life status. Validate thermal performance requirements against the specified ambient temperature range.

Selection Notes

Select this component for applications requiring precise multi-channel LED current regulation. Consider the linear topology for noise-sensitive environments where switching regulators are unsuitable. Evaluate the 24-pin QFN package constraints for thermal dissipation and assembly processes. Compare against newer generations if long-term availability is critical for production volume.

Part Context

This IC belongs to the AS1122 family of LED drivers from ams OSRAM's digital photonics portfolio. It serves as a specialized solution for controlling multiple LEDs in display and illumination sectors. The manufacturer focuses on innovative light and sensor technologies, positioning this driver within their broader ecosystem of optical semiconductor solutions for mobile, computing, and industrial markets.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Due to the obsolete status, alternative components must be identified through independent cross-reference tools or direct consultation with the manufacturer for lifecycle management strategies.