TPS61199PWP

Overview

The TPS61199PWP is a white LED driver IC designed for LCD monitor backlighting applications. It integrates a current-mode boost controller with eight independent constant-current channels, each capable of delivering up to 70 mA. The device operates within an input voltage range of 8 V to 30 V and supports adjustable switching frequencies between 300 kHz and 800 kHz. It features adjustable output voltage, thermal shutdown protection, overvoltage protection, and PWM dimming control. Packaged in a 20-lead HTSSOP (PW) format, it ensures efficient power management for large-size displays.

Feature Summary

• Integrates a current-mode boost controller with eight independent constant-current channels for uniform LED illumination
• Supports wide input voltage ranges suitable for various display power architectures
• Includes comprehensive protection mechanisms such as thermal shutdown and overvoltage protection
• Enables precise brightness control through integrated PWM dimming functionality

Applications

• Large-size LCD monitor backlighting systems
• White LED driver circuits for display panels
• High-efficiency boost converter designs for lighting applications

Procurement Notes

Verify the specific package variant when ordering, as the TPS61199 series includes both HTSSOP (PW) and SOIC (NS) options. Confirm that the required part number matches the intended footprint for PCB layout compatibility. Check manufacturer documentation for moisture sensitivity levels and reflow soldering profiles to ensure proper handling during assembly processes.

Selection Notes

Select this component for designs requiring high channel count and precise current regulation in display backlighting. Consider the HTSSOP package for space-constrained layouts compared to other variants. Evaluate the adjustable frequency feature against EMI requirements and external component selection needs. Ensure the input voltage range aligns with the system's power supply capabilities.

Part Context

The TPS61199 belongs to Texas Instruments' family of integrated LED lighting drivers tailored for display applications. It combines power stage and control logic into a single solution, reducing bill-of-materials complexity. This specific model represents the HTSSOP packaged version, distinguishing it from the SOIC-based counterparts while maintaining identical electrical performance characteristics.

Replacement Considerations

The TPS61199NSR serves as a pin-compatible alternative offering the same electrical specifications in a SOIC-20 package. Verify mechanical footprint differences before substitution to ensure PCB traceability.