The TPS79933YZUR is a high-performance, 200mA, low-dropout (LDO) linear voltage regulator from Texas Instruments, designed to provide ultra-low noise output, very low dropout voltage, and excellent power supply rejection ratio (PSRR), making it an ideal choice for sensitive RF and analog circuitry.

Key Features

• Output Voltage: The device offers a fixed output voltage of 3.3V, which is suitable for a variety of applications, including powering microcontrollers, analog circuits, and RF components.
• High PSRR: With an excellent PSRR of 72 dB at 1 kHz, the TPS79933YZUR is capable of suppressing power supply noise, ensuring a stable and clean voltage supply.
• Low Dropout: The low dropout voltage of typically only 40 mV at a 200 mA load allows for efficient operation even when the input voltage is close to the output voltage, minimizing power loss and improving battery life in portable applications.
• Low Quiescent Current: The device features a low quiescent current of 40 µA, which is particularly beneficial for battery-powered devices, as it helps in prolonging the battery life.
• Thermal Protection: The TPS79933YZUR includes an over-temperature protection feature, which safeguards the device against excessive temperature conditions.
• Stable with Ceramic Capacitors: The LDO is stable with ceramic output capacitors, which are smaller, more reliable, and have lower equivalent series resistance (ESR) compared to tantalum or aluminum electrolytic capacitors.

Applications

The TPS79933YZUR is versatile and can be used in a variety of applications, including:

• Portable and battery-powered devices
• Wireless LAN and GPS
• Analog and digital sensor systems
• Medical equipment
• RF applications

Package and Availability

This voltage regulator is offered in a small, 5-pin SOT-23 package, identified by the ordering number TPS79933YZUR, and is available through Texas Instruments and authorized distributors. Its compact form factor makes it an excellent choice for space-constrained applications.