onsemi

KA7805ETSTU

KA7805ETSTU Description

The KA7805ETSTU is a fixed-output linear voltage regulator designed to provide a stable 5V output at a maximum current of 1A. Manufactured by onsemi, this regulator is housed in a through-hole TO220-3 package, making it suitable for a wide range of applications requiring a robust and reliable power solution. Despite being marked as obsolete, the KA7805ETSTU remains a viable option for legacy systems and specific applications where its unique features are advantageous.

KA7805ETSTU Features

• Output Type: Fixed, ensuring a consistent 5V output.
• Input Voltage Range: Capable of handling input voltages up to 35V, providing flexibility in power supply design.
• Output Current: Delivers a maximum output current of 1A, suitable for moderate power applications.
• Dropout Voltage: A maximum dropout voltage of 2V at 1A (typical) ensures efficient operation even at lower input voltages.
• Quiescent Current: Low quiescent current of 8 mA minimizes power consumption during idle states.
• Power Supply Rejection Ratio (PSRR): Achieves a PSRR of 73dB at 120Hz, effectively reducing noise and ripple in the output voltage.
• Protection Features: Equipped with over-temperature and short-circuit protection, enhancing reliability and preventing damage under adverse conditions.
• Moisture Sensitivity Level (MSL): MSL 1 (Unlimited) indicates the device is not sensitive to moisture, making it suitable for various environmental conditions.
• Package Type: Supplied in a tube package, facilitating easy handling and storage.
• Regulatory Compliance: REACH Unaffected and ECCN EAR99 ensure compliance with international regulations.

KA7805ETSTU Applications

The KA7805ETSTU is ideal for applications requiring a stable 5V power supply with moderate current capabilities. Its robust design and protection features make it suitable for:

• Consumer Electronics: Powering devices such as radios, small appliances, and portable electronics.
• Industrial Equipment: Providing reliable power for control systems, sensors, and actuators.
• Telecommunications: Supplying power to low-power communication modules and peripherals.
• Automotive: Suitable for non-critical automotive electronics where a stable 5V supply is required.
• Legacy Systems: Ideal for maintaining and upgrading older systems where the KA7805ETSTU’s specifications are already established.

Conclusion of KA7805ETSTU

The KA7805ETSTU, despite its obsolete status, remains a reliable choice for applications requiring a stable 5V output at up to 1A. Its low dropout voltage, robust protection features, and compliance with regulatory standards make it a versatile component. While newer alternatives may offer advanced features, the KA7805ETSTU’s proven performance and compatibility with existing designs ensure its continued relevance in various electronic systems. For engineers and designers working with legacy systems or specific applications where its features are advantageous, the KA7805ETSTU is a dependable solution.