LM3559TLE/NOPB

LED Driver IC Overview

The LM3559TLE/NOPB is a dual-output LED driver IC designed for camera flash applications. It integrates a boost DC-DC converter with an internal switch, operating from a supply voltage range of 2.5V to 5.5V. The device supports I2C dimming control and delivers up to 900mA per channel. It functions at a switching frequency of 2MHz and is housed in a compact 16-DSBGA package. The component operates within a temperature range of -40°C to 85°C.

LED Driver IC Feature Summary

• Integrates a high-efficiency boost converter with internal power switches for compact design.
• Supports digital I2C interface for precise current regulation and dimming control.
• Provides dual independent output channels suitable for multi-flash or strobe configurations.

LED Driver IC Applications

• Camera module flash lighting
• Mobile device illumination systems
• Compact optical signaling circuits

LED Driver IC Procurement Notes

Verify the specific suffix NOPB confirms lead-free compliance and RoHS3 status as documented by Texas Instruments. Confirm the 16-DSBGA package type matches your PCB footprint requirements. Ensure the I2C address configuration aligns with your system bus architecture before finalizing procurement specifications.

LED Driver IC Selection Notes

Select this component when designing space-constrained mobile devices requiring high-current flash capabilities. The integrated boost topology eliminates external inductors where possible, reducing board area. Verify that the input voltage range covers your battery discharge curve and that the thermal performance of the DSBGA package suits your enclosure constraints.

LED Driver IC Part Context

This part belongs to the LM3559 family of LED drivers from Texas Instruments. It is specifically optimized for portable electronics, offering a balance of high efficiency and small form factor. The NOPB suffix indicates a non-pb (lead-free) version compliant with environmental directives, distinguishing it from older leaded variants.

LED Driver IC Replacement Considerations

Check for direct pin-compatible alternatives within the same TI family if availability is constrained. Ensure any substitute maintains the 16-DSBGA package and I2C interface compatibility. Verify that the replacement supports the required 900mA output current and 2MHz switching frequency for equivalent performance.

LED Driver IC FAQ

What is the maximum output current per channel?

The device supports up to 900mA per channel.

How is the LED brightness controlled?

Brightness is regulated via an I2C digital interface allowing for programmable dimming.