LM3503ITLX-35/NOPB

LED Driver IC Overview

The LM3503ITLX-35/NOPB is a dual-output boost DC-DC regulator IC designed for LED backlight applications. It features an integrated 1 MHz switching frequency and supports analog and PWM dimming control. The device delivers up to 750 mA switch current with a maximum output voltage of 35 V. Operating from a supply range of 2.5 V to 5.5 V, it functions within temperatures from -40°C to +85°C. Packaged in a 10-TµSMD (DSBGA) footprint measuring 1.9x2.07 mm, it provides efficient power management for portable electronic displays.

LED Driver IC Feature Summary

• Dual-output boost topology optimized for LED backlight driving
• Integrated 1 MHz fixed switching frequency for compact design
• Supports both analog and pulse-width modulation dimming methods

LED Driver IC Applications

• Mobile phone LCD backlight systems
• Portable media player display illumination
• Handheld gaming device screen lighting

LED Driver IC Procurement Notes

Verify the specific suffix 'ITLX-35' against official Texas Instruments documentation to confirm the exact thermal grade and reel packaging specifications. Ensure compatibility with existing PCB footprints for the 10-TµSMD package. Cross-reference pin assignments with the latest datasheet revision to prevent integration errors during assembly.

LED Driver IC Selection Notes

Select this component when designing space-constrained portable devices requiring dual-channel LED drive capabilities. The 1 MHz frequency allows for smaller external inductors compared to lower-frequency alternatives. Consider the 750 mA switch current limit relative to total LED string requirements and ensure input voltage ranges align with battery discharge profiles.

LED Driver IC Part Context

This part belongs to the LM3503 series of LED drivers from Texas Instruments. It shares functional similarities with other models like the LM3503SQ-16 but differs in package type and specific electrical characteristics. The series focuses on providing efficient power conversion for display backlights in consumer electronics.

LED Driver IC Replacement Considerations

Direct substitutes include the LM3503ITL-35/NOPB and LM3503SQ-16/NOPB. Verify pin-to-pin compatibility and electrical parameter alignment before swapping. Note that package variations may require PCB layout adjustments.