The RC1585MC is a low dropout (LDO) voltage regulator from Fairchild Semiconductor (now ON Semiconductor). It is designed to provide a stable and regulated output voltage with minimal voltage drop, making it suitable for applications where input voltage is close to the desired output voltage. The 'MC' suffix likely indicates a specific package type or operating temperature range.

Applications

• Post Regulation for Switching Supplies: Used to provide a clean and stable voltage to sensitive loads.
• Battery-Powered Systems: Provides efficient voltage regulation for portable devices.
• Microprocessor Power Supplies: Powers microprocessors, microcontrollers, and digital signal processors (DSPs).
• Linear Regulators: Used in a variety of linear regulation applications.
• Notebook Computers: Provides stable power to various components within laptops.

Features

• Low Dropout Voltage: Operates with a very low dropout voltage, allowing it to function even when the input voltage is close to the output voltage.
• High Output Current: Delivers a high output current, typically up to 5A.
• Adjustable Output Voltage: Can be adjusted to provide a range of output voltages.
• Over-Current Protection: Protects the regulator and connected load from damage due to excessive current.
• Thermal Overload Protection: Shuts down the regulator if the junction temperature exceeds a safe limit.

Benefits

• Stable Output Voltage: Provides a stable and regulated output voltage, ensuring reliable operation of connected devices.
• Efficient Voltage Regulation: Minimizes power loss, improving efficiency and reducing heat dissipation.
• Flexible Output Voltage: Adjustable output voltage allows for flexibility in various applications.
• Robust Protection: Over-current and thermal overload protection ensure reliable operation and prevent damage.
• Simplified System Design: Requires minimal external components, simplifying system design.

Additional Details

The RC1585MC typically has an adjustable output voltage range from 1.25V to 5.7V. The dropout voltage is typically around 1.3V at the maximum output current. It requires a small output capacitor for stability. The regulator is available in various packages, such as TO-220 and TO-263. The operating temperature range is typically from -40°C to +125°C. Proper heat sinking is essential to ensure reliable operation, especially at higher output currents. The device is RoHS compliant, adhering to environmental standards. ON Semiconductor ensures that the RC1585MC has tight load regulation and line regulation specifications for accurate voltage control.