AS3688-T

Overview

The AS3688-T is an LED driver IC from ams OSRAM, designed for mobile backlight and camera flash applications. It integrates a DC-DC boost converter and charge pump topology to drive up to nine LED channels. The device supports a maximum output voltage of 25V and delivers a peak current of 900mA per channel in flash mode. Packaged in a 32-VFQFN with exposed pad (5x5 mm), it operates as a surface-mount component suitable for space-constrained portable electronics.

Feature Summary

• Integrates boost and charge pump topologies for efficient multi-channel LED driving
• Supports high-current flash operation for camera applications
• Compact 32-pin QFN package design for mobile form factors

Applications

• Mobile device backlighting
• Camera flash illumination
• Portable electronic display drivers

Procurement Notes

Verify the specific suffix -T indicates tape and reel packaging versus bulk tube variants. Confirm end-of-life status as some listings indicate discontinued status. Ensure compatibility with 32-QFN footprint requirements during integration planning.

Selection Notes

Select this component when designing systems requiring integrated power management for multiple LEDs. Consider the 25V output limit and 900mA flash capability against load requirements. Evaluate the 32-VFQFN package constraints for PCB layout and thermal dissipation needs in dense mobile designs.

Part Context

Part of the ams OSRAM LED driver portfolio targeting mobile visual solutions. The AS3688 series addresses the need for compact, high-efficiency lighting control in smartphones and tablets. It replaces discrete solution approaches by combining regulation and switching elements into a single integrated circuit.

Replacement Considerations

Check for direct pin-compatible alternatives within the same manufacturer family. Verify if newer generations offer improved efficiency or updated packaging options while maintaining functional equivalence for existing designs.