ISL97682IRTZ

Overview

The ISL97682IRTZ is a highly integrated two-channel LED driver from the Renesas ISL97682 series, designed for medium-size TFT-LCD backlights. It operates with input voltages as low as 4V and supports output voltages up to 45V. The device features selectable switching frequencies of 600kHz or 1MHz in PFM or PWM modes. It incorporates dynamic headroom control, extensive fault protection including open/short circuit detection, OVP, and OTP, and offers 8-bit PWM dimming with direct output following.

Feature Summary

• Adaptive boost switching architecture enables Direct PWM dimming with output linearity as low as 0.009% at 200Hz.
• Dynamic headroom control monitors highest LED forward voltage string for minimum output regulation.
• Optional channel phase shift control minimizes input/output ripple and load transient interference.

Applications

• Medium-size TFT-LCD backlighting systems
• Video and audio equipment requiring noise reduction
• Portable electronic displays

Procurement Notes

Verify component authenticity through authorized distributors or official Renesas channels. Confirm package integrity and pin alignment against the TQFN-EP-16 specification. Check manufacturing date codes and lot traceability records. Ensure storage conditions comply with moisture sensitivity level requirements prior to reflow soldering.

Selection Notes

Select this model for applications requiring two independent LED channels with high efficiency. Consider the 3mm x 3mm TQFN package for space-constrained designs. Evaluate thermal performance under maximum load conditions. Compare against ISL97683 or ISL97684 if three or four channels are required instead.

Part Context

The ISL97682 belongs to the ISL9768x family of LED drivers manufactured by Renesas Electronics Corporation. This series includes variants such as the ISL97683 and ISL97684, which offer additional channel counts while maintaining similar architectural features. The product line targets high-performance display backlighting solutions.

Replacement Considerations

ISL97683IRTZ (3-channel variant)

FAQ

What is the function of dynamic headroom control?

It monitors the highest LED forward voltage string and uses its feedback signal to achieve minimum output regulation, improving efficiency.

How does the device minimize EMI interference?

It utilizes optional channel phase shift control to minimize input and output ripple characteristics and load transients.