TLED2043IGQNR

Overview

The TLED2043IGQNR is a linear LED driver IC manufactured by Texas Instruments. It features four independent output channels, each capable of delivering up to 50mA of current. The device utilizes a MICROSTAR JUNIOR package with 20 pins and dimensions of 4x3 mm. It supports linear dimming control for precise brightness adjustment. The internal architecture includes level-shifting amplifiers with a gain of 0.2, facilitating efficient biasing at half supply voltage without requiring additional operational amplifiers.

Feature Summary

• Four-channel linear LED driver design
• Integrated level-shifting difference amplifier
• Simplified biasing via split reference connection
• Compact MICROSTAR JUNIOR packaging

Applications

• Multi-LED backlighting systems
• Indicator lighting circuits
• Portable electronic display drivers
• Low-power LED array management

Procurement Notes

Verify the manufacturer part number TLED2043IGQNR against official Texas Instruments documentation to ensure authenticity. Confirm that the component matches the specified 20-BGA MICROSTAR JUNIOR package and 50mA per channel rating. Request original datasheets to validate electrical characteristics and pinout configurations before integration into designs.

Selection Notes

Select this component when designing circuits requiring four independent LED channels with linear dimming capabilities. The integrated level-shifting amplifier simplifies biasing requirements, reducing external component count. Ensure the application operates within the specified current limits and thermal constraints associated with the compact BGA package.

Part Context

This device belongs to the TLED series of linear LED drivers from Texas Instruments. These components are designed for applications requiring precise current regulation and dimming control. The TLED2043 variant specifically addresses multi-channel needs in space-constrained portable devices.

Replacement Considerations

Consult official Texas Instruments substitution guides for verified alternatives. Cross-reference pinouts and electrical specifications to ensure compatibility with existing PCB layouts and thermal management strategies.

FAQ

What is the function of the level-shifting amplifier in this device?

The level-shifting amplifier has a gain of 0.2 and evaluates a level-shifting difference amplifier configuration. It simplifies biasing at one-half supply or reference voltage.

How does the split reference connection benefit the circuit design?

The split reference connection simplifies biasing at one-half supply or reference and eliminates the need for an additional operating amplifier.