TPS61195RUYT

Overview

The TPS61195RUYT is an integrated white LED driver designed for LCD backlighting applications. It features eight independent output channels capable of driving up to 96 LEDs in series-parallel configurations. The device incorporates a boost DC-DC converter with an internal 2.5A, 50V MOSFET and supports input voltages from 4.5V to 21V. It offers programmable switching frequencies between 600kHz and 1MHz and provides PWM dimming control alongside an SMBus interface for system management. The component operates within a temperature range of -40°C to 85°C and is housed in a 28-pin WQFN package.

Feature Summary

• Integrates an 8-channel LED driver with a built-in high-voltage boost converter
• Supports SMBus communication for configuration and monitoring
• Enables precise brightness control via hardware PWM dimming signals
• Features adaptive boost regulation to optimize efficiency across varying LED loads

Applications

• Large-size LCD panel backlighting systems
• White LED string drivers for display modules
• Portable electronic devices requiring high-brightness backlighting

Procurement Notes

Verify the specific suffix (RUYT) corresponds to the tape-and-reel packaging format required for automated assembly processes. Confirm that the 28-WQFN footprint matches the PCB land pattern design. Ensure the selected variant meets the thermal requirements for the intended operating environment, as the device is rated for industrial temperatures. Cross-reference the datasheet revision to confirm compatibility with existing firmware or SMBus protocols used in the host system.

Selection Notes

Select this component when designing systems requiring multiple LED strings driven by a single controller with centralized management capabilities. The integrated SMBus interface allows for dynamic adjustment of current levels and fault monitoring without additional GPIO usage. Consider the maximum output voltage capability relative to the total forward voltage of the LED array. The programmable frequency feature aids in minimizing electromagnetic interference by allowing frequency shifting away from sensitive audio or RF bands.

Part Context

The TPS61195 belongs to Texas Instruments' family of highly integrated LED drivers tailored for complex backlighting architectures. Unlike single-channel regulators, this part consolidates power stage, control logic, and communication interfaces into one solution. It addresses the trend toward thinner displays by reducing the number of external components needed for multi-string LED drives. The device complements other TI PMIC solutions by offering specialized functionality for display subsystems.

Replacement Considerations

The TPS61195RUYR is a pin-compatible alternative differing primarily in packaging type. Verify if reel or cut-tape formats are interchangeable for the specific manufacturing line. No direct functional substitutes with different pinouts are documented in the provided data.