LM2794TLX/NOPB

Overview

The LM2794TLX/NOPB is a current-regulated switched capacitor LED driver IC from Texas Instruments, designed for white LED applications. It features four independent output channels capable of delivering up to 80 mA per channel. The device operates on an input voltage range of 2.7 V to 5.5 V and supports analog and PWM dimming functions. It utilizes a charge pump topology with an internal switching frequency between 325 kHz and 675 kHz. The component is housed in a 14-pin DSBGA package and functions within a temperature range of -30°C to +85°C.

Feature Summary

• Four-channel current regulation for precise LED control
• Integrated charge pump topology for efficient power conversion
• Supports both analog and PWM dimming methods

Applications

• White LED lighting systems
• Portable electronic displays
• Backlighting solutions

Procurement Notes

Verify the specific suffix 'TLX' against official documentation to confirm packaging details, as ordering suffixes may indicate variations in reel specifications or tape-and-reel configurations. Ensure compatibility with existing PCB footprints for the 14-DSBGA package. Cross-reference the manufacturer's latest datasheet to confirm active status and any potential lifecycle changes before finalizing procurement plans.

Selection Notes

Select this component when designing circuits requiring multi-channel LED drive from a single low-voltage source. The integrated charge pump eliminates the need for external inductors, simplifying layout. Consider the 80 mA output limit per channel and the 2.7 V minimum input requirement. Verify that the required dimming interface aligns with the supported analog and PWM modes.

Part Context

This part belongs to the LM2794 series of LED drivers. It shares functional similarities with other Texas Instruments switched capacitor devices but is distinct in its four-channel configuration and specific operating voltage range. The 'NOPB' suffix indicates lead-free construction compliant with RoHS standards.

Replacement Considerations

The LM2794TL/NOPB is a related variant differing primarily in packaging format (cut tape vs. tape and reel). Direct substitution requires verifying that the system design accommodates the specific reel requirements associated with the 'X' suffix.