onsemi

KA78RH33RTM  

Linear & Switching Voltage Regulators

KA78RH33RTM Description

The KA78RH33RTM is a fixed output linear regulator designed for applications requiring a stable 3.3V output voltage and a maximum output current of 800mA. Manufactured by onsemi, this regulator is housed in a DPAK (TO-252-3) surface-mount package, making it suitable for compact and high-density PCB designs. The KA78RH33RTM features a maximum input voltage of 15V and a dropout voltage of 1.4V at full load, ensuring efficient operation even under varying input conditions. With a quiescent current of only 10mA, this regulator is optimized for low power consumption, making it ideal for battery-powered and energy-sensitive applications.

KA78RH33RTM Features

• Fixed Output Voltage: The KA78RH33RTM provides a stable 3.3V output, ensuring consistent power supply for sensitive electronic components.
• High Output Current: Capable of delivering up to 800mA, this regulator can power a wide range of devices, from microcontrollers to small motors.
• Low Dropout Voltage: With a maximum dropout voltage of 1.4V at 800mA, the KA78RH33RTM maintains high efficiency even when the input voltage is close to the output voltage.
• Protection Features: Over-current and over-temperature protection ensure reliable operation and protect the regulator from damage under fault conditions.
• Low Quiescent Current: A quiescent current of 10mA minimizes power loss, making this regulator suitable for low-power applications.
• High PSRR: A power supply rejection ratio (PSRR) of 55dB at 120Hz helps filter out noise from the input supply, resulting in cleaner output voltage.
• Surface-Mount Package: The DPAK package allows for easy integration into modern PCB designs and supports automated assembly processes.
• Moisture Sensitivity Level: MSL 1 (Unlimited) ensures the component can be safely stored and handled without the need for special moisture protection.

KA78RH33RTM Applications

The KA78RH33RTM is well-suited for a variety of applications where a reliable and efficient power supply is crucial. Some specific use cases include:

• Embedded Systems: Providing a stable power supply for microcontrollers, sensors, and other low-power electronics in embedded systems.
• Consumer Electronics: Ideal for powering small devices such as portable media players, e-readers, and smartwatches.
• Industrial Control: Suitable for powering control boards and small actuators in industrial automation systems.
• Telecommunications: Can be used in low-power communication modules and IoT devices where stable voltage and current are required.
• Battery-Powered Devices: Its low quiescent current and high efficiency make it an excellent choice for battery-operated applications, extending battery life.

Conclusion of KA78RH33RTM

The KA78RH33RTM is a robust and efficient linear regulator that offers a reliable power solution for a wide range of applications. Its fixed 3.3V output, combined with a high output current capability and low dropout voltage, makes it an excellent choice for modern electronic designs. The inclusion of over-current and over-temperature protection ensures long-term reliability and safety. Despite being marked as obsolete, the KA78RH33RTM remains a viable option for new designs due to its REACH unaffected status and availability in a surface-mount package. For applications requiring a stable and efficient power supply, the KA78RH33RTM stands out as a reliable and cost-effective solution.

KA78RH33RTM Documents

Download datasheets and manufacturer documentation for KA78RH33RTM

PCN Packaging :

Mult Devices 24/Oct/2017      

PCN Obsolescence/ EOL :

Mult Dev EOL 18/Oct/2018      

HTML Datasheet :

KA78RH33R      

PCN Design/Specification :

Logo 17/Aug/2017       Description Chg 01/Apr/2016      

Environmental Information :

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