Linear Technology's LT3015IDD: A Robust Negative Low Dropout Linear Regulator

The LT3015IDD is a high-performance negative low dropout linear regulator designed by Linear Technology to cater to a wide range of applications requiring a stable and reliable power supply. This component is particularly well-suited for systems that demand a negative output voltage with high accuracy and low noise. The LT3015IDD is capable of delivering up to 1.5A of continuous output current with a low dropout voltage of only 310mV at full load.

Key Features:

• Wide Input Voltage Range: The LT3015IDD operates with an input voltage range from -1.8V to -30V, making it versatile for various applications.
• Adjustable Output Voltage: Users can set the output voltage from -1.22V to -29.5V, allowing for high flexibility in system design.
• Low Dropout Voltage: The device's low dropout voltage ensures efficient operation even when the input-to-output differential is minimal.
• Low Noise: With only 40μVRMS (10Hz to 100kHz), the LT3015IDD provides a quiet power supply, essential for sensitive analog circuits and precision instruments.
• Stable with Low ESR Ceramic Capacitors: The regulator remains stable with ceramic output capacitors, reducing the size and cost of the overall power supply design.
• Overcurrent and Overtemperature Protection: Built-in protection features safeguard the device and the system against adverse conditions.

Applications:

The LT3015IDD is ideal for a range of applications, including:

• Automotive systems
• Industrial power supplies
• Instrumentation
• Portable and battery-powered equipment
• Negative voltage generation in mixed supply systems

Package and Reliability:

The LT3015IDD is offered in a compact 12-lead low profile (0.75mm) DFN package with a 3mm x 3mm footprint. The device is characterized for operation from -40°C to 125°C, making it suitable for industrial and automotive environments where reliability is critical.

With its robust set of features and protections, the LT3015IDD from Linear Technology is an excellent choice for designers looking for a negative LDO with high performance and reliability.