AS1109-BSSU

Overview

The AS1109-BSSU is a linear LED driver IC manufactured by ams-OSRAM USA INC. It features an internal shift register topology with eight output channels, each capable of delivering up to 100mA. The device operates within a supply voltage range of 3.15V to 5.5V and supports output voltages up to 15V. Designed for surface mount installation, it utilizes a 16-QSOP package (16-SSOP). The component functions at frequencies up to 50MHz and is rated for operation in temperatures ranging from -40°C to 85°C.

Feature Summary

• Integrates an internal shift register for efficient serial data processing and control.

Applications

• Signage systems

Procurement Notes

Verify the active status and specific package variant when sourcing. Confirm that the 16-QSOP form factor matches the target PCB footprint. Ensure the operating temperature range meets environmental requirements. Check for any recent product change notices regarding lead frame or assembly modifications.

Selection Notes

Select this component for applications requiring precise current regulation for multiple LED segments. The linear topology suits low-noise environments where switching regulator interference is undesirable. Verify that the 100mA per channel limit aligns with the connected LED load specifications.

Part Context

This part belongs to the AS1109 series of LED drivers. It is distinct from other ams-OSRAM products like the AS1106WL display driver or the AS5172B magnetic sensor. The series focuses on providing reliable current control for lighting applications using a compact surface-mount design.

Replacement Considerations

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