AS3649-ZWLT

Overview

The AS3649-ZWLT is a dual-channel LED driver IC manufactured by ams OSRAM. It integrates a DC-DC step-up (boost) regulator designed to drive high-power LEDs, including flash applications with up to 1A output current capability. The device features I2C interface for digital dimming control and configuration. It is housed in a compact 16-CSP package with dimensions of 1.96x1.97 mm, suitable for space-constrained mobile and wearable designs.

Feature Summary

• Integrates a boost converter topology for efficient high-current LED driving
• Supports digital I2C-based dimming and parameter configuration
• Dual-channel architecture for independent or synchronized LED control

Applications

• Mobile device camera flash illumination
• Wearable device indicator lighting
• Compact automotive interior lighting modules

Procurement Notes

Verify the specific suffix ZWLT against official ams OSRAM documentation to confirm pinout and thermal characteristics. Ensure compatibility with I2C bus voltage levels used in the target system. Confirm RoHS compliance status through the manufacturer's material declaration documents prior to integration.

Selection Notes

Select this component when a small footprint CSP package is required alongside integrated boost regulation. The I2C interface allows for precise digital control without additional external logic. Evaluate the 1A peak current rating against the specific LED forward voltage requirements to ensure adequate headroom within the boost converter limits.

Part Context

This part belongs to the ams OSRAM LED driver portfolio, focusing on power management solutions for portable electronics. The company specializes in digital photonics, providing integrated circuits that combine sensing and illumination capabilities. This driver supports the trend toward miniaturization in consumer electronics.

Replacement Considerations

Check for direct cross-reference part numbers from ams OSRAM with identical pinouts and electrical specifications. Verify if alternative packages offer similar performance if mechanical constraints allow. Consult official substitution guides for any functional differences in control interfaces.