AS3683

Overview

The AS3683 is a DC-DC regulator IC manufactured by ams-OSRAM USA INC. It utilizes a switched capacitor (charge pump) topology and includes internal switches. The device provides six outputs with a maximum current of 400mA in flash mode. It supports dimming functionality and is housed in a 24-QFN (4x4) package.

Feature Summary

• Integrates six independent output channels for multi-LED driving applications
• Employs switched capacitor charge pump topology to regulate voltage without external inductors
• Includes internal switching elements to simplify circuit design and reduce component count

Applications

• Automotive interior lighting systems requiring high-current LED drivers
• In-cabin monitoring solutions utilizing infrared illumination
• Mobile device camera flash modules

Procurement Notes

Verify the specific suffix designation, such as -T, against official datasheets to confirm package type and tape-and-reel specifications. Confirm part status, as listings may indicate obsolete status. Ensure compatibility with system voltage requirements and thermal management needs before procurement.

Selection Notes

Select this component for designs requiring multiple synchronized LED outputs from a single driver IC. The charge pump architecture is suitable for space-constrained applications where inductor-based solutions are undesirable. Evaluate the 400mA output capability against peak load requirements for flash or strobe operations.

Part Context

The AS3683 belongs to the AS368x series of LED drivers from ams-OSRAM, which also includes models like AS3681 and AS3682. These devices are designed for automotive and mobile lighting applications, offering integrated power management and control features for high-brightness LEDs.

Replacement Considerations

Check for direct substitutes within the AS3681/AS3682 family if pinout and electrical characteristics match. Verify availability of alternative suppliers for the 24-QFN package if sourcing constraints exist.