The TPS799285DDCR from Texas Instruments is a high-performance, low-dropout linear regulator (LDO) that offers excellent AC performance with very low ground current. High power supply rejection ratio (PSRR), low noise, fast start-up, and excellent line and load transient responses are features of this LDO, making it an ideal choice for high-performance applications.

Key Features

• Low Dropout Voltage: The device provides a dropout voltage of typically 40mV at a 200mA load, which enhances its efficiency and allows operation over a wide range of input voltages.
• High PSRR: With a PSRR of 72dB at 1kHz, the TPS799285DDCR is particularly suitable for RF and other sensitive applications where power supply noise can adversely affect system performance.
• Ultra-Low Noise: This regulator offers ultra-low output noise of 28µVRMS, making it ideal for precision analog circuits and voltage-sensitive RF applications.
• Fast Transient Response: The device's fast transient response ensures stable output voltage during sudden changes in load, which is critical for maintaining performance in digital and mixed-signal applications.
• Adjustable Output Voltage: The output voltage is adjustable from 1.2V to 6.5V with the use of external resistors, providing design flexibility.
• Stable with Ceramic Capacitors: The TPS799285DDCR is stable with ceramic output capacitors, which are smaller, more reliable, and have lower equivalent series resistance (ESR) than tantalum capacitors.

Applications

The TPS799285DDCR is suitable for a variety of applications, including:

• RF: VCOs, RF Power Amplifiers
• Portable and Battery-Powered Equipment
• Medical Equipment
• Analog and Digital Sensor Systems
• Post-Regulation for Switching Supplies

Package and Availability

The TPS799285DDCR is available in a small 5-pin SOT-23 package, making it suitable for space-constrained applications. The device is also characterized for operation over a wide temperature range of –40°C to 125°C, offering reliable performance in diverse environments.