The LT1129CS8-3.3#TR is a high-performance low dropout voltage regulator from Linear Technology, designed to deliver a fixed output of 3.3 volts. This device is part of a family of regulators that offer significant improvements over older series reference designs, providing lower dropout voltage and better regulation characteristics.

Key Features

• Output Voltage: 3.3V fixed output with an accuracy of ±2% over line, load, and temperature variations.
• Output Current: Capable of supplying up to 700mA of output current, making it suitable for a wide range of applications.
• Low Dropout Voltage: Features a low dropout voltage, typically 400mV at full load, which enhances efficiency and allows operation over a wider input voltage range.
• Thermal Protection: Comes with built-in thermal shutdown protection to prevent damage from overheating.
• Low Quiescent Current: The quiescent current is low, which is ideal for battery-powered applications.
• Stability: Stable with 10µF output capacitor and does not require the addition of ESR (Equivalent Series Resistance) as is common with other regulators.

Applications

The LT1129CS8-3.3#TR is versatile and can be used in various applications such as:

• Portable electronics
• Microprocessor supply
• Power management for consumer products
• Peripheral power supplies

Package and Quality

This voltage regulator comes in an 8-lead SOIC package, marked with the product number LT1129CS8-3.3#TR, ensuring a compact footprint suitable for space-constrained applications. The device is also available in tape and reel packaging, facilitating efficient assembly for high-volume production.

Conclusion

With its robust feature set, the LT1129CS8-3.3#TR from Linear Technology is an excellent choice for designers looking for a reliable and efficient voltage regulator. Its low dropout performance, coupled with a stable output and thermal protection, makes it a go-to component for a myriad of electronic devices requiring a consistent 3.3V supply.