Switching Voltage Regulators 28-V 250-mA Switch B oost Converter

TPS61041DBVR – 1.8V to 6V Input, 28V Output LED Driver IC – Texas Instruments

Power your backlighting applications efficiently with the TPS61041DBVR LED driver from Texas Instruments. This high-performance step-up DC/DC regulator integrates a switching MOSFET to deliver up to 28V output from ultra-low 1.8V inputs, making it ideal for battery-powered devices. PCX supplies this active-status IC with guaranteed authenticity and rapid shipping.

Key Features

• Topology: Step-Up (Boost) Converter with Internal Power Switch
• Input Voltage Range: 1.8V to 6V
• Output Voltage: Up to 28V
• Switch Current: 215mA
• Dimming Control: PWM Signal Compatible
• High Efficiency: 1MHz Fixed Switching Frequency
• Robust Operation: -40°C to 85°C Temperature Range
• Compact Design: SOT-23-5 Package for Space-Constrained PCBs

Technical Details

This PMIC LED driver features a single-output boost architecture requiring minimal external components. The integrated 215mA switch supports constant-current LED driving with PWM dimming control for precise brightness adjustment. Surface-mountable in a SOT-23-5 package (SC-74A/SOT-753), it operates across industrial temperature ranges. Download datasheet for full schematics and layout guidelines.

Typical Applications

• LCD/OLED Backlighting for Portable Electronics
• Battery-Powered LED Arrays
• Handheld Medical Devices
• Industrial Control Panel Indicators
• Automotive Dashboard Lighting

About Texas Instruments

Texas Instruments (TI) is a globally recognized leader in semiconductor innovation, with over 90 years of engineering excellence. Their power management ICs set industry benchmarks for efficiency and integration, serving aerospace, automotive, and consumer electronics markets.

TI’s rigorous quality control and extensive R&D investment ensure reliable, cutting-edge components. Their products undergo stringent testing for thermal performance and longevity, making them preferred solutions for mission-critical designs worldwide.

About LED Driver ICs

LED driver integrated circuits regulate voltage and current to illuminate LEDs safely and efficiently. Unlike passive components, they provide active control for consistent brightness across variable power sources while protecting against voltage spikes and thermal runaway.

These ICs are essential in modern electronics where energy efficiency and compact design are paramount. From smartphones to industrial equipment, they enable dynamic lighting control, extended battery life, and reduced system complexity compared to discrete solutions.

Packaging Options

Available in industry-standard formats: Tape & Reel (TR) for automated assembly, Cut Tape (CT) for prototyping, and Digi-Reel® for flexible reel quantities. Specify your preference when ordering.

Frequently Asked Questions

Question: What is the minimum input voltage for stable operation?

Answer: The TPS61041DBVR operates down to 1.8V, making it suitable for single-cell Li-ion or 2xAA battery systems.

Question: Can this driver power multiple LED strings?

Answer: It supports one output channel. For multi-string designs, parallel LEDs with current-balancing resistors or use dedicated multi-channel drivers.

Question: Is external heatsinking required?

Answer: The SOT-23-5 package’s thermal performance typically eliminates need for heatsinks at rated currents. Ensure adequate PCB copper pour for heat dissipation.

Question: How does PWM dimming work with this IC?

Answer: Apply a PWM signal (200Hz-1kHz) to the EN pin. Duty cycle directly controls LED brightness without color shift.

Question: What protection features are included?

Answer: Integrated over-temperature shutdown and cycle-by-cycle current limiting safeguard against faults.

Question: Can I use this for automotive interior lighting?

Answer: Yes, its -40°C to 85°C range suits cabin applications. For engine-compartment use, consider AEC-Q100 graded alternatives.

Disclaimer: Product images are representational. Refer to datasheet for exact dimensions.

Optimize your lighting design with Texas Instruments engineering – order TPS61041DBVR from PCX today for same-day shipping and expert technical support!