TPS61177ABRGRR

Overview

The TPS61177ABRGRR is a white LED (WLED) driver IC designed for notebook and tablet displays. It integrates six boost converters to drive up to six series-connected WLED strings. The device supports mixed-mode dimming, combining analog current control with PWM signals for precise brightness adjustment. It operates from a single supply voltage and includes internal switches, eliminating the need for external power components. The component features an I2C interface for configuration and monitoring, ensuring efficient backlight management in portable electronic devices.

Feature Summary

• Integrates six independent boost channels for multi-string WLED applications
• Supports mixed-mode dimming with analog current regulation and PWM input
• Includes internal power switches to reduce external component count
• Utilizes I2C interface for programmable control and status monitoring

Applications

• Notebook computer display backlighting
• Tablet PC screen illumination
• Portable monitor LED drivers
• Multi-zone LED lighting systems

Procurement Notes

Verify the complete part number including suffixes such as RGRR or ARGRR against the specific datasheet revision. Confirm that the package type matches the required PCB footprint. Ensure the operating temperature range aligns with the target application environment. Cross-reference the manufacturer's latest documentation to confirm active status and any design-in recommendations.

Selection Notes

Select this component when designing for notebooks or tablets requiring multiple series LED strings. It is suitable for applications needing high efficiency and compact size due to integrated switches. Consider the mixed-mode dimming capability if both smooth analog control and fast digital synchronization are required. Verify that the input voltage range covers the system's battery or supply profile.

Part Context

This device belongs to Texas Instruments' family of WLED drivers optimized for portable computing. It complements other models like the TPS61185 and LP8550 series by offering higher channel counts. The TPS61177 series addresses the demand for brighter, more uniform displays in thin-and-light form factors. It represents a solution for complex backlight architectures without excessive external passive components.

Replacement Considerations

Public confirmed substitute part numbers include TPS61177ARGRR and TPS61177RGRR. These variants share the same core functionality but may differ in packaging or tape-reel specifications. Verify pin compatibility and electrical parameters before substitution.