The LT3083 3A linear regulator features a precision current source architecture that provides fixed frequency response and load regulation, and can be paralleled to achieve high current outputs.
The document introduces a new architecture for 3-terminal linear regulators that replaces the traditional voltage reference with a precision current source. This design allows for fixed frequency response and load regulation, eliminating issues associated with resistor dividers in traditional designs.
A key benefit of this architecture is the ability to easily parallel multiple LT3083 or LT3080 devices to spread power dissipation and increase output current. By connecting the SET pins together, a common reference point is established, allowing for simple load balancing with minimal ballast resistors.
The LT3083 has an increased 3A output current capability.
The device requires a minimum of 0.5mA load current.
With as little as 0.5V drop across the regulator, a 3A load translates to 1.5W of power dissipation.