The LT1085, a product from Linear Technology, is a series of high-performance, low dropout (LDO) positive voltage regulators that are designed to provide a stable power supply with a minimal voltage difference between the input and output. These regulators are capable of delivering up to 3A of continuous output current with a dropout voltage typically as low as 1.5V at maximum output, making them ideal for tight voltage regulation scenarios.
Key Features
- Adjustable and Fixed Output Voltages: The LT1085 comes in various fixed voltage outputs such as 5V, 3.3V, and 12V, as well as an adjustable version that can be set to any value between 1.25V and 29V with external resistors.
- Low Dropout Voltage: The typical dropout voltage of 1.5V at full load ensures efficient operation even with minimal input-to-output voltage differentials.
- High Output Current: Capable of delivering up to 3A of output current, making it suitable for high-power applications.
- Excellent Regulation: Outstanding line and load regulation specifications ensure a stable output even with varying input voltages and loads.
- Overcurrent and Overtemperature Protection: Built-in protection features safeguard the device and the load from adverse conditions.
Applications
The versatility of the LT1085 makes it suitable for a wide range of applications, including:
- Microprocessor supply
- Post-regulation for switching supplies
- Constant current supplies
- Battery chargers
Performance Summary
The LT1085 regulators are designed with the intent of providing a high-quality power solution for sensitive electronics. They offer excellent thermal performance and full-rated output current with higher ambient temperatures. Users will appreciate the device's ease of use, as it requires only two external capacitors for stability. The versatility in voltage selection, coupled with a robust set of safety features, makes the LT1085 an excellent choice for designers looking for a reliable and flexible power regulation solution.
