ISL97634IRT26Z-TK

Overview

The ISL97634IRT26Z-TK is a highly integrated PWM boost LED driver designed for white LED backlighting in small-size LCD panels. It operates within an input supply voltage range of 2.4 V to 5.5 V and supports a maximum output current of 30 mA. The device utilizes a SEPIC or step-up (Boost) DC-DC regulator topology to drive LEDs efficiently. It features wide-range PWM dimming control, allowing frequencies from DC up to 32 kHz, which extends beyond the audible spectrum to prevent noise. The component is housed in an 8-TDFN (2x3) package.

Feature Summary

• Highly integrated PWM boost LED driver architecture optimized for efficiency
• Wide PWM dimming control capability extending into DC frequency ranges
• Operates with input voltages ranging from 2.4 V to 5.5 V
• Designed specifically for backlighting applications in compact display modules

Applications

• LED backlighting for small-size LCD panels
• White LED driver circuits in portable electronic devices
• Compact display module illumination systems

Procurement Notes

Verify that the specific suffix 'TK' corresponds to the required tape-and-reel packaging configuration as defined by Renesas Electronics Corporation. Confirm RoHS compliance status through official documentation prior to integration. Ensure the 8-TDFN (2x3) footprint matches the target PCB layout constraints. Cross-reference the manufacturer part number against current Renesas catalogs to validate availability and revision status before finalizing procurement orders.

Selection Notes

Select this component when designing backlight solutions for small LCD panels requiring high integration and efficient power management. The device is suitable for applications needing wide PWM dimming ranges without audible noise interference. Consider the 2.4 V to 5.5 V operating range to ensure compatibility with system power rails. The 30 mA output current limit defines the maximum LED string capacity. Evaluate the 8-TDFN package size against available board space for optimal mechanical fit.

Part Context

The ISL97634 series represents Renesas Electronics' portfolio of efficient LED drivers tailored for display backlighting. This specific model integrates PWM control and boost regulation into a single chip, reducing external component count. It is part of the broader Intersil/Renesas analog product line focused on power management and signal processing for consumer electronics and industrial applications.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify pin-to-pin compatibility and electrical specifications with alternative LED drivers if sourcing this specific Renesas part is not feasible.