TPS65170RHDT

The TPS65170RHDT from Texas Instruments is a power management integrated circuit specifically designed for LCD bias applications. It provides a comprehensive solution for generating the necessary voltages for LCD panels, including source voltage (VS), logic supply (VLOGIC), and gate driver supplies (VGH and VGL) through external charge pumps.

Key electrical specifications include an input voltage range of 8.6V to 14.7V. The device incorporates a boost converter with a switch current limit of 2.8A, capable of outputting voltages up to 18.5V, and a buck converter with a 1.5A switch current limit. Both converters operate at a fixed switching frequency of 750kHz. The IC also includes features like boost and buck converter short-circuit protection, fixed buck converter soft-start, and programmable boost converter soft-start.

Designed for reliability and ease of thermal management, the TPS65170RHDT utilizes external transistors for charge pump regulation, reducing internal power dissipation. It operates within an ambient temperature range of -40°C to 85°C. The IC is housed in a 28-pin VQFN package measuring 5x5 mm, suitable for surface mount assembly.

Applications for the TPS65170RHDT include LCD TVs and monitors, where precise and stable power delivery is crucial for display performance. The integrated reset circuit further enhances system stability by monitoring critical parameters.