TPS61181RTET

Overview

The TPS61181RTET is a white LED driver IC designed for notebook applications, manufactured by Texas Instruments. It features a boost topology with an integrated internal switch and operates within a supply voltage range of 5V to 24V. The device provides six independent output channels, each capable of delivering up to 25mA of current. It supports PWM dimming control and functions at a switching frequency of 1MHz. The maximum output voltage reaches 38V, and the component is housed in a 16-WQFN (3x3) package with exposed pad, suitable for surface mount installation across an operating temperature range of -40°C to 85°C.

Feature Summary

• Integrates a high-efficiency boost converter with an internal power switch for compact design
• Provides six independent regulated current outputs for multi-string LED configurations
• Supports precise digital brightness control via PWM dimming interface

Applications

• White LED backlighting for notebook computers
• Multi-zone LED illumination systems requiring independent channel control
• Portable electronic devices utilizing boost-based LED drivers

Procurement Notes

Verify the specific suffix RTET corresponds to the reel tape packaging format required for your assembly line. Confirm that the 16-WQFN footprint matches your PCB layout guidelines. Ensure input voltage specifications align with your system's power rails before integration. Check for RoHS compliance status if environmental regulations apply to your manufacturing process.

Selection Notes

Select this component when designing systems requiring six isolated LED channels driven from a single boost stage. It is appropriate for applications needing 25mA per channel rather than higher current variants like the TPS61183. Consider the 1MHz switching frequency for balancing EMI performance against passive component size requirements.

Part Context

This part belongs to the TPS6118x family of LED lighting drivers from Texas Instruments. While sharing similar boost topologies with other members, the TPS61181 specifically targets lower current requirements compared to higher-power siblings. It serves as a specialized solution for portable computing displays where space efficiency and multi-channel regulation are critical design constraints.

Replacement Considerations

The TPS61181ARTET offers similar functionality but with a slightly different input voltage range starting at 4.5V. Verify pin compatibility and thermal characteristics before substituting. No direct drop-in replacements with identical electrical parameters are publicly confirmed.