The TPS79147 from Texas Instruments is a high-performance, low-dropout linear regulator (LDO) designed to deliver a continuous 100-mA output with a dropout voltage of just 85 mV at full load. This device is particularly notable for its ultra-low output noise and high power supply rejection ratio (PSRR), making it an ideal choice for RF and analog circuits that require a clean and stable power supply.

Key Features

• High PSRR: With a PSRR of 72 dB at 1 kHz, the TPS79147 ensures that fluctuations in the input voltage do not affect the output, providing a stable voltage to sensitive RF and analog components.
• Ultra-Low Noise: This LDO boasts an exceptionally low output noise of only 17 µVRMS (10 Hz to 100 kHz), which is critical for precision applications such as medical equipment and high-end audio.
• Fast Transient Response: The device's fast transient response makes it suitable for applications with rapidly changing loads, ensuring voltage stability and reliable operation.
• Low Dropout Voltage: The low dropout voltage allows the regulator to continue delivering a regulated output even when the supply voltage is very close to the output voltage, maximizing battery life in portable applications.
• Adjustable Output: The output voltage is adjustable from 1.2 V to 6.5 V, which provides flexibility for use in various circuits and applications.
• Thermal Shutdown and Overcurrent Protection: Built-in safety features protect the device and the application from damage due to overheating or excessive current draw.

Applications

The TPS79147 is ideal for a wide range of applications, including:

• RF and Analog Circuits
• Portable and Battery-Powered Equipment
• Medical Devices
• High-End Audio
• Data Acquisition Systems

With its combination of low noise, high PSRR, and fast response, the TPS79147 from Texas Instruments is a reliable choice for engineers looking to optimize the performance and efficiency of their sensitive electronic systems.