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Product Detailed Parameters
- Description：IC LED DRVR RGLTR PWM 35MA 24QFN
- Series：-
- Mfr：Renesas Electronics Corporation
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：DC DC Regulator
- Topology：Step-Up (Boost)
- Internal Switch(s)：Yes
- Number of Outputs：6
- Voltage - Supply (Min)：6V
- Voltage - Supply (Max)：24V
- Voltage - Output：34.5V
- Current - Output / Channel：35mA
- Frequency：600kHz, 1.2MHz
- Dimming：PWM
- Applications：Backlight
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Package / Case：24-VFQFN Exposed Pad
- Supplier Device Package：24-QFN (4x4)
- Grade：-
- Qualification：-
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Overview
The ISL97635AIRZ-TK is an SMBus-controlled LED driver IC designed for LCD backlight applications. It features eight independent channels with a maximum output voltage of 34.5V and typical current matching of ±1%. The device supports dynamic headroom control to minimize power loss, offering dimming via SMBus PWM/DC, external PWM up to 20kHz, or analog inputs. Operating from a 6V to 24V supply, it includes protections for open/short circuits, over-temperature, and overvoltage.
Feature Summary
- SMBus digital control interface for precise current regulation
- Dynamic headroom control for optimized power efficiency
- Multiple dimming methods including external PWM and analog input
- Comprehensive protection mechanisms for string faults and thermal limits
Applications
- LCD monitor backlighting
- Notebook display backlighting
- Portable electronic device displays
Procurement Notes
This component has reached End-of-Life (EOL) status as confirmed by manufacturer Product Change Notices. Availability is restricted to remaining stock or secondary markets. Verify specific revision levels and RoHS compliance through official documentation before integration into new designs.
Selection Notes
Select this part for multi-string LCD backlight systems requiring high channel count and precise current matching. Ensure the application supports SMBus communication protocols and operates within the specified 6V to 24V input range. Consider the 24-QFN package constraints for thermal management in compact form factors.
Part Context
Part of the ISL97635 series, which provides digitally controlled LED driving solutions. The AIRZ suffix indicates automotive-grade qualification and tape-and-reel packaging. This family targets high-performance visual displays where uniformity and efficient power management are critical requirements.
Replacement Considerations
ISL97635AIRZ-T: Identical functional specifications but packaged in tubes instead of tape-and-reel. Suitable for manual assembly or different feeder configurations.
