LT1085CT-5#PBF
Overview
The LT1085CT-5#PBF is a high-efficiency positive fixed voltage regulator designed to provide a stable 5V output with a 3A load current capability. It features a significantly lower dropout voltage than standard NPN regulators, requiring only 1V at maximum output current. Internal circuitry includes protection against short circuits and thermal overload to ensure reliability under heavy load conditions.
Why Choose This Part
The primary advantage is its low dropout performance of 1V at 3A, which is roughly 50 percent lower than traditional linear regulators. All devices are 100 percent tested for dropout voltage and are trimmed for high output voltage accuracy of 1 percent. It is pin-compatible with older three-terminal regulators, allowing for easy drop-in performance upgrades.
Applications
Getting Started
When integrating the LT1085CT-5#PBF, ensure a minimum 10uF tantalum or 50uF aluminum electrolytic capacitor is placed on the output for stability. Since this is a TO-220 package, calculate the required heat sinking based on the power dissipation (Vin - Vout) * Iout to prevent thermal shutdown. Consult the datasheet for minimum load current requirements to maintain regulation.
Also Consider
STMicroelectronics
- A functional equivalent 3A low-dropout regulator with a 5V fixed output in a TO-220 package.
