Texas Instruments

TPS79945YZUR

TPS79945YZUR Description

The TPS79945YZUR is a high-performance linear voltage regulator designed by Texas Instruments, offering a fixed output voltage of 4.5V and a maximum output current of 200mA. This device is engineered to provide stable and efficient power regulation in a variety of electronic applications. The regulator is housed in a 5-lead DSBGA package, which is ideal for surface-mount applications, ensuring compactness and ease of integration into modern electronic designs.

The TPS79945YZUR features a maximum input voltage of 6.5V, making it suitable for a wide range of input power sources. Its low dropout voltage of 0.16V at 200mA ensures high efficiency, even when the input voltage is close to the output voltage. This characteristic is particularly beneficial in battery-powered devices where the input voltage can drop significantly as the battery discharges.

TPS79945YZUR Features

• Fixed Output Voltage: 4.5V, ensuring stable power supply for sensitive electronic components.
• High Efficiency: Low dropout voltage of 0.16V at 200mA, maximizing power conversion efficiency.
• Low Quiescent Current: 60 µA, which minimizes power consumption in standby mode, ideal for battery-operated devices.
• Wide Input Voltage Range: Up to 6.5V, providing flexibility in power source selection.
• Protection Features: Over-current protection, over-temperature protection, reverse polarity protection, and under-voltage lockout (UVLO) ensure robustness and reliability in various operating conditions.
• Control Features: Enable function allows for dynamic control of the regulator's operation, enhancing flexibility in system design.
• High PSRR: 70dB at 100Hz to 38dB at 100kHz, ensuring excellent noise rejection and stable output voltage.
• Compliance: ROHS3 compliant and REACH unaffected, ensuring environmental safety and regulatory compliance.
• Moisture Sensitivity Level: MSL 1 (Unlimited), making it suitable for a wide range of manufacturing environments.

TPS79945YZUR Applications

The TPS79945YZUR is ideal for a variety of applications where stable and efficient power regulation is required. Its low dropout voltage and high PSRR make it particularly suitable for:

• Battery-Powered Devices: Portable electronics, such as smartphones, tablets, and wearable devices, where battery life and efficiency are critical.
• Consumer Electronics: Audio and video equipment, where low noise and stable power supply are essential for high-quality performance.
• Industrial Systems: Control boards and sensors that require reliable power regulation in harsh operating conditions.
• Medical Devices: Portable medical equipment, such as glucose meters and portable ultrasound devices, where precision and reliability are paramount.

Conclusion of TPS79945YZUR

The TPS79945YZUR from Texas Instruments is a versatile and high-performance linear voltage regulator that offers a combination of efficiency, stability, and reliability. Its low dropout voltage, low quiescent current, and comprehensive protection features make it an excellent choice for a wide range of applications, particularly those requiring efficient power management and high performance. The compact 5-lead DSBGA package and surface-mount mounting type ensure easy integration into modern electronic designs, making the TPS79945YZUR a standout solution in the field of linear voltage regulation.