AS3694B

Overview

The AS3694B is a DC-DC controller step-up (boost) LED driver IC manufactured by ams-OSRAM USA INC. It features 12 outputs and supports I2C and SPI dimming interfaces. The device provides a maximum output current of 70mA per channel. It is housed in a 64-TQFP-EP package with dimensions of 10x10 mm.

Feature Summary

• Integrates 12 independent LED driver channels for multi-zone illumination control
• Supports digital communication via I2C and SPI interfaces for precise dimming
• Utilizes a step-up (boost) DC-DC converter topology to drive high-voltage LED strings

Applications

• Automotive interior lighting systems requiring multi-channel control
• Advanced in-cabin monitoring solutions utilizing infrared illumination
• Complex LED visualization arrays in industrial or consumer devices

Procurement Notes

Verify the specific ordering suffix against the official datasheet to confirm pinout compatibility and thermal pad configuration. Ensure the selected variant matches the required package outline and electrical specifications for the target application circuit design.

Selection Notes

Select this component when a high-channel-count LED driver with digital interface control is required. Consider the boost topology requirements for driving series-connected LEDs. Evaluate the 64-pin TQFP package constraints for PCB layout and thermal management in dense assemblies.

Part Context

The AS3694B belongs to the family of mixed-signal LED drivers offered by ams OSRAM. It complements their portfolio of sensing, illumination, and visualization components designed for automotive, healthcare, and industrial applications, focusing on sophisticated sensor and projection device integration.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Consult the manufacturer's official cross-reference list for verified alternatives.