TPS79525DCQR

Product Overview

The TPS79525DCQR from Texas Instruments is a surface-mount linear voltage regulator IC intended for positive fixed-output regulation in power management circuits. It provides a single 2.5 V output and can deliver up to 500 mA, with a maximum input voltage of 5.5 V. The device is housed in a SOT-223-6 package and includes an enable control feature, allowing the output to be switched on or off under system control. Protection features include over current, over temperature, reverse polarity, and under voltage lockout (UVLO), supporting operation across the specified -40°C to 125°C operating temperature range.

Key Features

• Single positive fixed 2.5 V output
• 500 mA output current capability
• Maximum input voltage 5.5 V
• Quiescent current 385 µA
• PSRR 59 dB ~ 39 dB over 100 Hz ~ 100 kHz
• Enable control for output activation and deactivation
• Over current, over temperature, reverse polarity, and UVLO protection
• Surface-mount SOT-223-6 package
• Operating temperature -40°C to 125°C

Applications

• Generating a regulated 2.5 V rail for microcontroller-based control boards
• Supplying 2.5 V logic interfaces in embedded systems
• Providing a controlled output rail for battery-powered portable devices
• Board-level power conditioning for systems with input voltages up to 5.5 V

Design & Procurement Notes

Designers should confirm that the input voltage remains within the 5.5 V maximum and that the load does not exceed 500 mA. The fixed 2.5 V output means the regulator is selected by system voltage requirement rather than programmed externally. The enable control can be used for output activation or deactivation during power management. The 385 µA quiescent current may be considered when planning low-current states. Surface-mount SOT-223-6 placement should account for the -40°C to 125°C operating temperature range and the protection features—over current, over temperature, reverse polarity, and UVLO—within system fault handling.