TPS61199NSR

Overview

The TPS61199NSR is an integrated white LED driver IC designed for LCD monitor backlighting applications. It features a boost topology with eight independent current sink channels, supporting up to eight LED strings. The device operates within an input voltage range of 8 V to 30 V and delivers an output current of 70 mA per channel. It supports adjustable switching frequencies between 300 kHz and 800 kHz, with adjustable output voltage. The component is housed in a SOIC-20 package and functions reliably across a temperature range of -40°C to +85°C.

Feature Summary

• Integrates a current-mode boost controller with eight independent current sinks for multi-string LED driving
• Provides PWM control capability for precise brightness adjustment
• Includes comprehensive protection mechanisms such as overvoltage protection (OVP) and thermal shutdown
• Supports adjustable switch frequency to optimize efficiency and EMI performance

Applications

• LCD monitor backlighting systems
• White LED driver circuits for display panels
• Multi-string LED lighting architectures requiring independent channel control

Procurement Notes

Verify the specific suffix 'NSR' corresponds to the SOIC-20 package and reel packaging configuration required for your assembly process. Confirm that the operating temperature range of -40°C to +85°C meets your environmental specifications. Ensure input voltage constraints between 8 V and 30 V align with your power supply design before finalizing procurement.

Selection Notes

Select this component when designing high-density LCD backlight solutions requiring multiple independent LED strings. The integrated boost converter simplifies schematic design by reducing external component count. Consider the 70 mA output current limit and SOIC-20 thermal characteristics during PCB layout planning to ensure adequate heat dissipation under maximum load conditions.

Part Context

This part belongs to the TPS61199 series from Texas Instruments, specifically engineered for display backlighting. It combines power management and LED driving functions into a single solution. The NSR variant denotes the tape-and-reel packaging format suitable for automated surface-mount assembly processes in high-volume manufacturing environments.

Replacement Considerations

Consult official Texas Instruments documentation for verified pin-compatible or functionally equivalent alternatives within the same product family. Cross-reference electrical parameters such as output current and operating voltage to ensure compatibility with existing system designs.