Texas Instruments

TPS77450DGKR

TPS77450DGKR Description

The TPS77450DGKR is a fixed-output linear regulator designed by Texas Instruments, offering a robust solution for power management applications. This regulator is part of the Power Management Integrated Circuits (PMIC) category and is housed in an 8-VSSOP package, making it suitable for surface-mount applications. Despite its obsolete status, the TPS77450DGKR remains a reliable choice for applications requiring a stable 5V output at up to 250mA.

TPS77450DGKR Features

• Output Type: Fixed, ensuring a consistent 5V output.
• Input Voltage Range: Capable of handling input voltages up to 10V, providing flexibility in power supply design.
• Output Current: Delivers a maximum output current of 250mA, suitable for a variety of low-power applications.
• Low Dropout Voltage: With a maximum dropout voltage of 0.19V at 250mA, the TPS77450DGKR maintains high efficiency even at low input-to-output voltage differentials.
• Quiescent Current: Features a low quiescent current of 125 µA, minimizing power consumption in standby mode.
• Power Supply Rejection Ratio (PSRR): Achieves a PSRR of 55dB at 1kHz, effectively filtering out noise from the input supply.
• Control Features: Includes enable and power good signals, allowing for precise control and monitoring of the regulator's operation.
• Protection Features: Equipped with over-current, over-temperature, and reverse polarity protection, ensuring reliable operation under various conditions.
• Compliance: ROHS3 compliant and REACH unaffected, meeting environmental and regulatory standards.
• Moisture Sensitivity Level (MSL): MSL 1 (Unlimited), suitable for a wide range of manufacturing environments.
• Packaging: Available in tape and reel (TR) packaging, facilitating efficient handling and assembly in production lines.

TPS77450DGKR Applications

The TPS77450DGKR is ideal for applications requiring a stable and efficient power supply. Its low dropout voltage and high PSRR make it particularly suitable for applications where input voltage fluctuations are common. Specific use cases include:

• Consumer Electronics: Ideal for powering low-power devices such as portable media players, digital cameras, and handheld gaming consoles.
• Industrial Equipment: Suitable for powering sensors, microcontrollers, and other low-power components in industrial control systems.
• Medical Devices: Provides a reliable power source for medical instruments and diagnostic equipment, ensuring stable operation and minimal noise interference.
• Telecommunications: Can be used in various telecom applications, including base stations and network equipment, where a stable 5V supply is required.

Conclusion of TPS77450DGKR

The TPS77450DGKR from Texas Instruments is a versatile and reliable linear regulator, offering a fixed 5V output with a maximum current of 250mA. Its low dropout voltage, high PSRR, and comprehensive protection features make it a standout choice for a variety of applications. Despite its obsolete status, the TPS77450DGKR remains a valuable component for designers seeking a stable and efficient power management solution.