TPS61043DRBRG4

Overview

The TPS61043DRBRG4 is a constant current LED driver IC from Texas Instruments, designed for powering up to four LEDs in series. It operates within an input voltage range of 1.8 V to 6 V and features an internal 30-V switch. The device achieves up to 85% efficiency and supports precise brightness control via PWM dimming. It functions at a switching frequency of 1 MHz with a maximum output current of 60 mA per channel. The component operates across a temperature range of -40°C to +85°C and is housed in a VSON-8 package.

Feature Summary

• Provides constant current regulation for driving multiple LEDs in series configurations
• Enables precise brightness adjustment through pulse-width modulation (PWM) dimming
• Integrates a high-voltage internal switch capable of handling up to 30 V
• Optimizes power conversion efficiency for portable lighting applications

Applications

• LED backlighting systems
• Portable LED lighting devices
• Battery-powered illumination modules

Procurement Notes

Verify the specific ordering suffix DRBRG4 against the manufacturer's official datasheet to confirm package type and tape-and-reel specifications. Ensure compatibility with moisture sensitivity levels and reflow soldering profiles defined in the document. Cross-reference the part number with authorized distributors to validate authenticity and avoid counterfeit components. Confirm that the industrial temperature grade meets the operational requirements of the target environment.

Selection Notes

Select this component when designing circuits requiring constant current drive for series-connected LEDs with an input voltage between 1.8 V and 6 V. Consider its 60 mA output capability and 1 MHz switching frequency for compact inductor designs. Evaluate the need for PWM dimming functionality for brightness control. Compare it against other boost converters if variable voltage output is required instead of constant current.

Part Context

This part belongs to the TPS6104x family of boost converters by Texas Instruments. While similar parts like the TPS61040 focus on general switching regulator applications with different output characteristics, the TPS61043 is specifically optimized as a constant current LED driver. It shares the same input voltage range but differs in output configuration and intended use case for lighting rather than general power supply.

Replacement Considerations

• TPS61043DRBR

FAQ

What is the maximum input voltage supported by the TPS61043DRBRG4?

The device supports an input voltage range from 1.8 V to 6 V.

How is brightness controlled in this LED driver?

Brightness is controlled precisely using pulse-width modulation (PWM) dimming.

What is the operating temperature range for this component?

The component operates within a temperature range of -40°C to +85°C.