TPS61177ARGRR

Overview

The TPS61177ARGRR is a WLED driver IC designed for notebook and tablet displays. It features a boost DC-DC regulator with six independent output channels, supporting up to 30mA per channel. The device operates with an input voltage range of 4.5V to 39V and integrates a 1.2MHz switching frequency. It supports analog and PWM dimming interfaces for mixed dimming modes. The component is housed in a 20-pin VQFN package measuring 3.5x3.5mm.

Feature Summary

• Integrates a high-efficiency boost converter with six independent LED current sources
• Supports mixed dimming modes combining analog and PWM control signals
• Designed specifically for white LED backlight applications in portable electronics

Applications

• Notebook computer LCD backlights
• Tablet display backlighting systems
• Portable electronic device illumination

Procurement Notes

Verify the specific suffix 'R' indicates tape-and-reel packaging configuration. Confirm the operating temperature range matches your environmental requirements. Ensure the 20-VQFN footprint aligns with your PCB layout constraints. Cross-reference the latest datasheet revision for any updated electrical characteristics or pin definitions before finalizing the design.

Selection Notes

Select this component when designing for portable devices requiring multiple LED strings driven from a single boost stage. It is suitable for applications needing precise current regulation across six channels. Consider the thermal performance of the VQFN package under maximum load conditions. Verify compatibility with the system's PWM dimming signal frequencies and analog voltage ranges.

Part Context

This part belongs to Texas Instruments' family of WLED drivers optimized for mobile computing platforms. It addresses the need for efficient backlighting in thin and light form factors. The integrated boost topology reduces external component count compared to discrete solutions. It complements other TI display driver families by providing dedicated power management for LED arrays.

Replacement Considerations

Consult official substitution guides for direct pin-compatible alternatives within the same product family. Verify that any substitute maintains the six-channel architecture and similar boost voltage capabilities. Ensure the replacement supports the required dimming interface specifications.