The KIA378R33PI is a 3.3V fixed output Low Dropout (LDO) regulator manufactured by KEC. This regulator provides a stable and regulated 3.3V output voltage from a higher input voltage, while maintaining regulation even when the input voltage is close to the output voltage. The KIA378R33PI is designed to provide a clean and reliable power source for a variety of electronic devices, ensuring stable operation and preventing damage from voltage fluctuations.

Applications:

• Microcontroller power supplies: Provides a stable 3.3V supply voltage for microcontrollers.
• Battery-powered devices: Efficiently regulates voltage in portable devices such as mobile phones, tablets, and wearable electronics.
• Post-regulation for switching power supplies: Filters out noise and ripple from switching regulators, providing a cleaner output.
• Logic circuits: Powers digital logic circuits requiring a stable 3.3V supply.
• Sensor power supplies: Provides a stable voltage for sensitive sensor circuits.

Features:

• Fixed 3.3V output voltage: Provides a stable and regulated output voltage.
• Low dropout voltage: Maintains regulation with a small difference between input and output voltage.
• Overcurrent protection: Protects the regulator and the load from excessive current draw.
• Thermal shutdown: Shuts down the regulator when the junction temperature exceeds a safe limit.
• Short-circuit protection: Protects the regulator and the load from short-circuit conditions.

Benefits:

• Stable power supply: Ensures reliable operation of electronic devices.
• Protection against voltage fluctuations: Prevents damage to sensitive components.
• Efficient power conversion: Minimizes power loss and extends battery life in portable devices.
• Simplified design: Requires minimal external components for operation.
• Enhanced system reliability: Protects against overcurrent, thermal overload, and short circuits.

Additional Details:

The KIA378R33PI is typically available in a TO-252 or SOT-223 package. It can typically supply an output current of up to 1A, depending on the input voltage, output voltage, and thermal conditions. The dropout voltage is typically around 0.5V at the rated current. The regulator also features a low quiescent current, which minimizes power consumption when the load is light. Refer to the manufacturer's datasheet for detailed specifications, including the input voltage range, output voltage accuracy, transient response, and thermal resistance. This LDO regulator is RoHS compliant.