The LM1085S-3.3/TR is a low dropout (LDO) positive voltage regulator manufactured by HGSEMI. This regulator provides a fixed 3.3V output voltage with a maximum output current of 3A. It's designed to maintain a stable output voltage even when the input voltage is close to the output voltage, making it suitable for applications where power efficiency and low voltage operation are critical.

Applications

• Post Regulator for Switching Power Supplies
• Battery Chargers
• Microprocessor Power Supplies
• Motherboard Power Supplies
• High Efficiency Linear Regulators
• Instrumentation

Features

• Fixed Output Voltage: 3.3V
• Maximum Output Current: 3A
• Low Dropout Voltage: Typically 1.3V at 3A
• Short Circuit Protection
• Thermal Overload Protection
• Reverse Battery Protection
• Operating Temperature Range: -40°C to +125°C
• Available in TO-263 Package

Benefits

• High Current Output: Capable of delivering up to 3A of current, suitable for powering devices requiring a moderate current supply.
• Low Dropout Voltage: Maintains regulation with minimal input-output voltage difference, improving efficiency in power-sensitive applications.
• Robust Protection: Provides short circuit, thermal overload, and reverse battery protection, enhancing overall system reliability.
• Fixed Output Voltage: Simplifies design and reduces the need for external components, streamlining circuit layout.
• Wide Operating Temperature Range: Ensures consistent performance in diverse environmental conditions.

Additional Details

The LM1085S-3.3/TR is provided in a TO-263 package for surface mount applications. The 3.3V fixed output makes it ideal for digital circuits and microcontrollers. The low dropout characteristic of this regulator improves power efficiency, extending battery life in portable devices. The internal protection features safeguard the regulator and the connected components from damage. The "/TR" suffix indicates that the part is supplied in tape and reel packaging for automated assembly processes.