TPS61187RTJT

Overview

The TPS61187RTJT is a white LED (WLED) driver IC designed for notebook LCD backlight applications. It features an integrated 2 A, 40 V MOSFET and supports up to six output channels. The device operates with a programmable switching frequency ranging from 300 kHz to 1 MHz and delivers a maximum output voltage of 38 V. Input supply voltage ranges from 4.5 V to 24 V. It utilizes a PWM interface for dimming control and includes an Auto Phase Shift function. The component is housed in a 20-pin QFN package and functions within a temperature range of -40°C to +85°C.

Feature Summary

• Integrates a high-efficiency boost converter with a 2 A, 40 V internal MOSFET for compact design.
• Supports up to six independent WLED outputs with adaptive boost regulation.
• Features an Auto Phase Shift function to optimize efficiency across varying load conditions.
• Provides precise brightness control via a standard PWM dimming interface.

Applications

• Notebook LCD backlight systems
• Portable display backlighting
• Mobile device illumination

Procurement Notes

Verify the specific suffix 'RTJT' against the manufacturer's official ordering guide to confirm tape-and-reel packaging specifications and quantity per reel. Ensure compatibility with the target PCB footprint, specifically the 20-QFN (4x4 mm) thermal pad requirements. Cross-reference the datasheet revision date to confirm that all electrical parameters and pinout configurations remain consistent with the design implementation.

Selection Notes

Select this component when designing for notebook or portable displays requiring multi-string WLED support. The integrated 2 A current capability and 38 V output limit suit typical series-parallel LED arrangements. The programmable frequency allows optimization for EMI performance and external component size. Verify that the input voltage range aligns with the system's battery or power rail availability.

Part Context

This part belongs to the TPS61187 family of WLED drivers from Texas Instruments. It is engineered specifically for mobile computing form factors where space and efficiency are critical. The RTJT suffix denotes the specific reel-based packaging variant intended for automated surface-mount assembly processes.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Consult the manufacturer's official replacement matrix for validated alternatives.