The AMS1083CM-3.3 is a low dropout voltage regulator manufactured by Advanced Monolithic Systems (AMS). This regulator is designed to provide a stable and regulated 3.3V output voltage with a high output current capability, making it suitable for various applications requiring a reliable power supply.

Applications

• Post Regulation for Switching Supplies: Providing a clean and stable 3.3V supply after a switching regulator to minimize noise and ripple.
• Battery Chargers: Regulating the charging voltage for battery-powered devices.
• Motherboard Applications: Powering core logic and I/O sections requiring a 3.3V supply.
• Microprocessor Power Supplies: Supplying a stable 3.3V to microprocessors and microcontrollers.
• Instrumentation: Providing a precise 3.3V reference voltage for measurement circuits.

Features

• Low Dropout Voltage: Operates with a low dropout voltage, allowing it to function effectively even with a small difference between the input and output voltage.
• Output Current of 7A: Capable of delivering up to 7A of output current, suitable for high-power applications.
• Internal Thermal Overload Protection: Protects the regulator from overheating by shutting down the output when the junction temperature exceeds a safe limit.
• Current Limiting: Provides current limiting to protect the regulator and the load from excessive current draw.
• Reverse Battery Protection: Protects the regulator from damage if the input voltage is accidentally reversed.
• Fixed 3.3V Output Voltage: Provides a stable and accurate 3.3V output voltage.

Benefits

• High Efficiency: Operates with high efficiency, minimizing power dissipation and heat generation.
• Reliable Performance: Provides stable and reliable performance, ensuring consistent operation of the powered devices.
• Overload Protection: Protects the regulator and the load from damage due to overcurrent and overtemperature conditions.
• Easy to Use: Requires minimal external components, simplifying the design process.
• Wide Input Voltage Range: Accepts a wide range of input voltages, providing flexibility in system design.

Additional Details

The AMS1083CM-3.3 is available in a TO-220 package. It requires an output capacitor for stability. The recommended output capacitor value is typically in the range of 10μF to 100μF, with a low ESR (Equivalent Series Resistance) for optimal performance. Proper heatsinking is required to dissipate the heat generated by the regulator at high output currents.