LM3556TMX/NOPB

LED Driver IC Overview

The LM3556TMX/NOPB is a high-efficiency white LED driver IC from Texas Instruments, designed for portable applications. It utilizes a boost topology to regulate output current with I2C and PWM control capabilities. The device operates within an input voltage range of 2.7 V to 5.5 V and supports a maximum output current of 30 mA. It functions at a switching frequency of 500 kHz and is housed in a compact DSBGA-12 package. The component is rated for operation between -30°C and +85°C.

LED Driver IC Feature Summary

• Integrates synchronous boost converter for high efficiency in space-constrained designs
• Supports dual dimming methods via I2C interface and PWM input signals
• Includes internal switch to minimize external component count

LED Driver IC Applications

• Portable electronic device backlighting
• Camera flash illumination systems
• Indicator lighting in mobile devices

LED Driver IC Procurement Notes

Verify the specific suffix against official documentation to confirm pinout and thermal characteristics. Confirm RoHS compliance status through the manufacturer's latest datasheet. Ensure the ordering part number matches the required package variant. Check for any recent product change notifications that may affect supply or specifications.

LED Driver IC Selection Notes

Select this component when designing circuits requiring precise LED current regulation with minimal external parts. The integrated boost converter simplifies layout compared to discrete solutions. Consider the operating temperature range and package size constraints during PCB design. Verify compatibility with system I2C bus speeds for dimming control.

LED Driver IC Part Context

This part belongs to the LM3554/LM3556 family of LED drivers optimized for portable electronics. It shares architectural similarities with other Texas Instruments boost converters but is specifically tuned for low-current LED applications. The family emphasizes efficiency and small footprint requirements typical of modern handheld devices.

LED Driver IC Replacement Considerations

Consult official substitution guides for verified alternatives. Cross-reference electrical parameters such as input voltage range and output current limits before replacing.