The MIC79110-4.2YML is a high-efficiency, low dropout (LDO) voltage regulator from Micrel, now Microchip Technology. It is designed to provide a stable and accurate 4.2V output voltage with a high level of current capability. This regulator is ideal for various applications where a clean and regulated power supply is essential.

Applications:

• Post Regulation for Switching Power Supplies: Used to provide a clean and stable voltage source after a switching regulator.
• Battery-Powered Systems: Suitable for devices powered by batteries requiring a precise voltage for optimal performance.
• Portable Electronics: Ideal for mobile phones, tablets, and other portable devices.
• Instrumentation: Provides stable power for sensitive measurement equipment.
• Point of Load Regulation: Powers specific components or sections of a circuit board requiring a specific voltage level.

Features:

• Low Dropout Voltage: Ensures regulation even when the input voltage is close to the output voltage.
• High Output Current: Capable of supplying substantial current to the load.
• Stable with Ceramic Output Capacitors: Works reliably with low-ESR ceramic capacitors.
• Overcurrent Protection: Protects the regulator and the load from damage due to excessive current draw.
• Thermal Shutdown: Shuts down the regulator if the die temperature exceeds a safe level, preventing damage.
• High Accuracy Output: Provides a precise and stable 4.2V output voltage.

Benefits:

• Improved System Performance: Provides a stable and clean power supply, improving the performance and reliability of the powered devices.
• Extended Battery Life: High efficiency minimizes power loss, extending the battery life in portable applications.
• Reduced Component Count: Stable operation with ceramic capacitors reduces the need for external components.
• Enhanced System Protection: Overcurrent and thermal shutdown features protect the regulator and the load from damage.
• Simplified Design: Easy to use and requires minimal external components.

Additional Details:

The MIC79110-4.2YML typically comes in a compact surface-mount package. It features enable/disable control, which allows the regulator to be turned on and off for power saving. The regulator is designed for a wide input voltage range and offers excellent transient response. This LDO regulator is designed with internal current limiting and thermal shutdown protection, making it a robust solution for demanding applications. Consult the datasheet for specific electrical characteristics, such as dropout voltage at various current levels and quiescent current consumption.