ISL97684IRTZ-TK

Overview

The ISL97684IRTZ-TK is a Renesas LED driver IC featuring four output channels with an integrated DC-DC boost converter. It supports PWM dimming and delivers up to 50mA per channel, operating from a 4V to 26.5V supply range. The device utilizes a 16-TQFN (3x3mm) package and functions at a switching frequency of 600kHz. Designed for backlight applications, it includes internal switches and fault protection mechanisms.

Feature Summary

• Integrates a boost DC-DC converter with four independent LED output channels
• Supports PWM dimming control for brightness regulation
• Includes built-in fault protection features such as overvoltage and overtemperature detection

Applications

• TFT-LCD backlight systems
• Medium size display illumination
• LED lighting drivers

Procurement Notes

This component is officially listed as End-of-Life (EOL). Verify current availability status through authorized distributors or check for obsolete stock. Due to the discontinued status, lead times are not applicable, and replacement planning should be initiated immediately. Confirm RoHS compliance and moisture sensitivity levels before procurement.

Selection Notes

Select this part for designs requiring four-channel LED driving with integrated boost conversion in a compact footprint. Ensure input voltage ranges between 4V and 26.5V align with system requirements. Consider the 600kHz switching frequency for EMI management. Verify thermal performance within the -40°C to +85°C operating range for the target application environment.

Part Context

The ISL97684 belongs to the ISL97682/83/84 series of highly integrated LED drivers suitable for medium-size TFT-LCD backlights. These devices offer phase shift control to minimize ripple and noise interference. The series provides adaptive boost switching architecture for efficient power management and linear dimming performance.

Replacement Considerations

Public confirmed substitute part numbers: ISL97684IRZ, ISL97684IRTZ.