ISL97694AIRTZ

Overview

The ISL97694AIRTZ is a six-channel LED lighting driver IC manufactured by Renesas Electronics Corporation. It utilizes a boost topology to drive LEDs from a single Li-Ion cell or battery source. The device supports PWM dimming with 12-bit resolution for precise brightness control. Key electrical parameters include an input voltage range of 2.4 V to 5.5 V, a maximum output current of 40 mA per channel, and a switching frequency adjustable between 400 kHz and 1.5 MHz. The integrated boost converter can generate up to 26 V output voltage. The component operates within a temperature range of -40°C to +85°C and is housed in a TQFN-20 package.

Feature Summary

• Integrates a high-efficiency boost DC-DC converter capable of driving multiple LED strings from low-voltage sources.
• Provides independent current regulation for six output channels with built-in open LED protection.
• Supports high-resolution 12-bit PWM dimming for smooth brightness adjustment across the full range.

Applications

• Portable electronic devices requiring multi-string LED backlighting
• Mobile phone display illumination systems
• Handheld gaming consoles and digital cameras

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels due to end-of-life status. Confirm RoHS compliance and moisture sensitivity level (MSL) ratings prior to soldering. Review the latest product change notification (PCN) for any manufacturing site or material updates. Ensure storage conditions adhere to JESD22-A113 standards to prevent lead frame oxidation.

Selection Notes

Select this component when designing circuits that require simultaneous control of multiple LED strings from a single-cell lithium-ion battery. The wide input voltage range accommodates varying battery states of charge. Consider the thermal performance of the TQFN-20 package and ensure adequate PCB copper area for heat dissipation. Verify that the required switching frequency falls within the 400 kHz to 1.5 MHz range to optimize external inductor size.

Part Context

This part belongs to the ISL97694A series of LED drivers designed for portable consumer electronics. It is functionally similar to the ISL97692 but offers additional channel capacity. The series focuses on minimizing external component count while maintaining high efficiency. It complements other Renesas power management solutions for complete system integration in mobile platforms.

Replacement Considerations

The datasheet does not list specific public confirmed substitute part numbers. Evaluate cross-reference options based on pin compatibility, electrical specifications, and package dimensions. Consult Renesas technical support for validated alternatives if the original component is unavailable.

FAQ

What is the maximum output voltage capability of the ISL97694AIRTZ?

The integrated boost converter can generate a maximum output voltage of 26 V.

Does the ISL97694AIRTZ include protection against LED faults?

Yes, the device includes open LED protection to detect and handle disconnected or failed LED strings.