The LP2982AIM5-4.0 is a micropower, 500 mA low-dropout (LDO) voltage regulator available from Rochester Electronics. As a micropower device, it's optimized for battery-powered and portable applications, providing a stable and efficient voltage supply while minimizing quiescent current to prolong battery life. This particular variant outputs a fixed 4.0V.

Applications

• Battery-powered systems: Ideal for use in devices such as smartphones, tablets, and portable media players due to its low quiescent current and small size.
• Wireless devices: Suitable for supplying power to RF transceivers and microcontrollers in wireless communication systems.
• Portable instrumentation: Commonly used in handheld test equipment and measurement devices.
• Consumer electronics: Employed in various consumer devices such as cameras, remote controls, and wearable technology.
• Post-regulation for switching power supplies: Can be used to provide a clean and stable voltage from a switching regulator.

Features

• Fixed Output Voltage: Provides a stable 4.0V output.
• Low Dropout Voltage: Operates with a very small difference between the input and output voltages, maximizing efficiency.
• 500 mA Output Current: Capable of supplying up to 500 mA of current to the load.
• Low Quiescent Current: Minimizes power consumption when the load is light or absent, prolonging battery life.
• Overcurrent and Overtemperature Protection: Protects the regulator and the load from damage in case of fault conditions.
• Stable with Ceramic Output Capacitors: Can be used with small, low-ESR ceramic capacitors, reducing overall solution size and cost.
• Enable Pin: Allows the regulator to be shut down to further reduce power consumption.

Benefits

• Extended Battery Life: Low quiescent current minimizes power consumption, extending the operational life of battery-powered devices.
• High Efficiency: Low dropout voltage ensures minimal power loss and efficient energy conversion.
• Protection against Fault Conditions: Overcurrent and overtemperature protection safeguards the regulator and the load.
• Compact Design: Small package size and compatibility with ceramic capacitors allows for a compact solution.
• Stable and Reliable Power Supply: Provides a consistent and stable 4.0V output, ensuring reliable operation of connected devices.

Additional Details

The LP2982AIM5-4.0 typically comes in an SOT-23-5 package. It requires a small output capacitor (typically 1-10 μF) for stability. The operating temperature range is typically -40°C to +125°C. It's important to consult the datasheet for specific operating conditions and application recommendations. Note that Rochester Electronics specializes in continuing manufacturing of discontinued parts, assuring availability of this component.