LT1964IS5-5 Low Dropout Negative Regulator from Linear Technology

The LT1964IS5-5 is a high-performance, low dropout negative voltage regulator designed for applications requiring precision, low noise, and high efficiency. Manufactured by Linear Technology, this regulator is capable of delivering up to 200mA of continuous output current with a dropout voltage of just 340mV at full load. The device operates over a wide input voltage range from -1.9V to -20V, making it suitable for a broad array of applications.

Key Features

• Output Voltage: -5V fixed output provides a stable voltage for various circuits.
• Low Dropout Voltage: The low dropout voltage of 340mV at full load enhances efficiency and allows operation close to the input voltage.
• Output Current: Capable of supplying 200mA, which is sufficient for a range of low-power applications.
• Low Noise: With a low output noise of 30uV RMS, it is an excellent choice for sensitive applications such as audio and RF.
• Stable with Low ESR Capacitors: The device remains stable with low ESR ceramic capacitors, offering flexibility in design.
• Thermal Protection: Built-in thermal shutdown and current limit protection ensure safe operation under abnormal conditions.

Applications

The LT1964IS5-5 is versatile and can be used in various applications, including:

• Battery-powered equipment
• Portable instruments
• Negative voltage microprocessor supplies
• Low noise preamplifiers
• High-speed ADCs
• Power supplies for op-amps and DACs

Package and Reliability

This negative voltage regulator is offered in a compact SOT-23 package, which is ideal for space-constrained applications. The LT1964IS5-5 is characterized for operation from -40°C to 125°C, ensuring reliable performance across a wide temperature range. The combination of its low noise, high efficiency, and thermal protection makes it a robust choice for demanding applications.

Whether you're designing power supplies for sensitive analog circuits or looking for a reliable negative voltage source, the LT1964IS5-5 from Linear Technology is a compelling solution that meets a wide range of design requirements.