LM2791LD-L/NOPB

Overview

The LM2791LD-L/NOPB is a dual-output LED driver IC from Texas Instruments, utilizing a switched capacitor (charge pump) topology. It operates within a supply voltage range of 3V to 5.8V and delivers up to 36mA per channel. The device features analog dimming control and functions at a switching frequency of 650kHz. Packaged in a compact 10-WSON (3x3mm) surface-mount format with an exposed pad, it supports an operating temperature range of -30°C to 85°C.

Feature Summary

• Dual-channel output capability for independent LED driving
• Integrated charge pump topology for efficient voltage regulation
• Analog brightness control interface for smooth dimming adjustment

Applications

• LCD backlight systems
• Portable electronic display illumination
• Compact lighting modules requiring low profile packaging

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm the specific suffix 'NOPB' indicates lead-free status and RoHS compliance where applicable. Review the official datasheet for handling instructions regarding moisture sensitivity and thermal requirements during soldering processes.

Selection Notes

Select this component for designs requiring dual LED outputs within a constrained vertical space. Ensure the input voltage remains between 3V and 5.8V to maintain proper operation. Consider the 36mA current limit per channel when sizing external components. Verify that analog dimming aligns with the system's control architecture.

Part Context

This part belongs to the LM2791 series of regulated switched-capacitor LED drivers. It is designed for applications needing precise current regulation without inductors. The 'L' variant typically denotes specific electrical characteristics or package options compared to other series members. It serves as a solution for space-constrained portable devices.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Consult the manufacturer's official replacement guide or cross-reference tools for compatible alternatives. Ensure any substitute matches the pinout, voltage range, and current capabilities.