TPS61183RTJT

Overview

The TPS61183RTJT is a white LED (WLED) driver IC designed for notebook applications. It features a boost topology with six current-mode outputs capable of delivering up to 2 A. The device operates from an input voltage range of 4.5 V to 24 V, supporting a maximum output voltage of 38 V. It utilizes a programmable switching frequency between 280 kHz and 1 MHz and functions within a temperature range of -40°C to +85°C. Packaged in a 20-pin QFN-20 (4x4 mm) format, it integrates PWM dimming control and open LED protection.

Feature Summary

• Integrates a 2-A, 40-V MOSFET for efficient power conversion
• Supports programmable PWM dimming via a dedicated interface
• Includes adaptive boost output regulation for WLED voltages
• Provides hardware-based open LED protection

Applications

• White LED backlighting for notebook computers
• Portable electronic display systems
• Mobile computing devices requiring high-efficiency lighting

Procurement Notes

Verify the specific suffix RTJ confirms the 20-pin QFN package and tape-and-reel or cut-tape availability. Confirm RoHS compliance status through official Texas Instruments documentation prior to integration. Ensure the design supports the required thermal dissipation for the QFN-20 enclosure under maximum load conditions.

Selection Notes

Select this component when designing for notebooks requiring six independent WLED channels. It is suitable for systems needing a 2-A output current capability and input voltages up to 24 V. Choose this part over variants like the TPS61187 if a fixed 1 MHz switching frequency is preferred over the adjustable range found in other series members.

Part Context

This device belongs to the TPS61183 series of LED lighting drivers. It is distinct from the TPS61185 series, which offers eight outputs and a different package configuration. The TPS61183RTJT specifically targets the notebook market segment with its optimized pin count and integrated protection features.

Replacement Considerations

The TPS61183RTJR is a related variant within the same family. Verify package compatibility and electrical specifications before substitution.