The LT3015IQ is a high-performance, low dropout negative linear regulator designed and manufactured by Linear Technology, a brand of Analog Devices. This robust voltage regulator is specifically tailored for applications requiring a low noise, high voltage, and a stable and reliable negative output voltage.

Key Features

• Output Voltage Range: The LT3015IQ offers a wide output voltage range from -1.22V to -30V, which can be set with a single external resistor.
• Low Dropout Voltage: The device features a low dropout voltage of only 310mV at full load (1.5A), ensuring efficient operation even when the input voltage is close to the output voltage.
• High Output Current: It is capable of delivering up to 1.5A of continuous output current, making it suitable for a wide variety of applications.
• Low Noise: With a low noise output of only 40µVRMS over a 10Hz to 100kHz bandwidth, the LT3015IQ is ideal for sensitive instrumentation, post-regulation for switching supplies, and other noise-critical applications.
• Stability: The regulator is stable with a minimum of 10µF of output capacitance and is compatible with ceramic, tantalum, or aluminum electrolytic capacitors without the need for series resistance.
• Protection Features: It includes multiple protection features such as reverse-battery protection, no reverse current flow from output to input, internal current limit with foldback, and thermal limiting with hysteresis.

Applications

The LT3015IQ is versatile and can be used in a variety of applications, including:

• Power supplies for operational amplifiers and other linear ICs
• Post-regulation for switching power supplies
• High voltage power supplies up to -30V
• Automotive and industrial control systems
• Instrumentation and test equipment

Package and Reliability

The LT3015IQ is offered in a rugged 5-lead TO-220 package, ensuring a robust mechanical and thermal performance. The device is characterized for operation from -40°C to 125°C, catering to a broad range of temperature environments.

With its combination of features, the LT3015IQ from Linear Technology stands out as a reliable and efficient choice for designers who require a high-quality negative voltage regulator for their demanding applications.