TPS61043DRBT

Overview

The TPS61043DRBT is a high-frequency boost converter with constant current output designed to drive white LEDs or similar loads. It powers up to four LEDs in series and operates within an input voltage range of 1.8 V to 6 V. The device features an internal 30-V switch and achieves up to 85% efficiency. Brightness control is managed via precise PWM signals, while LED current is set using an external sense resistor.

Feature Summary

• High-frequency boost converter architecture for efficient power conversion
• Constant current output capability for driving multiple series-connected LEDs
• Integrated internal 30-V switch for robust operation
• Precise brightness regulation through PWM control interface

Applications

• White LED backlighting systems
• Portable electronic device illumination
• Battery-powered lighting modules

Procurement Notes

Verify the specific package variant, as DRBT denotes an 8-SON (3x3) surface-mount configuration. Confirm that the selected component matches the required thermal performance and electrical specifications for the target application. Ensure compliance with RoHS standards and moisture sensitivity levels during storage and handling procedures.

Selection Notes

Select this component when designing circuits requiring efficient constant current drive for up to four series LEDs from low-voltage sources. Consider the 1.8 V to 6 V input range and 30-V switch rating for appropriate headroom. Evaluate the need for PWM dimming capabilities and external sense resistor placement for current setting accuracy.

Part Context

This part belongs to the TPS61043 family of constant current LED drivers manufactured by Texas Instruments. It serves as a specialized power management solution for portable applications where space constraints and energy efficiency are critical design parameters.

Replacement Considerations

No public confirmed substitute part numbers are available in the provided documentation.