


Fairchild (onsemi)
KA7806AETU
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KA7806AETU Description
KA7806AETU Description
The KA7806AETU is a linear voltage regulator designed by Fairchild Semiconductor (now part of onsemi) to provide a stable 6V output at a maximum current of 1A. This device is housed in a TO220-3 package, making it suitable for through-hole mounting. Despite its obsolete status, the KA7806AETU remains a reliable choice for applications requiring a fixed positive output voltage.
KA7806AETU Features
- Operating Temperature Range: The KA7806AETU operates reliably within a temperature range of 0°C to 125°C, making it suitable for a wide variety of industrial and consumer applications.
- Low Quiescent Current: With a quiescent current of just 6 mA, this regulator minimizes power consumption, which is crucial for energy-efficient designs.
- High PSRR: The regulator boasts a power supply rejection ratio (PSRR) of 65dB at 120Hz, ensuring minimal noise and ripple on the output voltage.
- Fixed Output Voltage: The KA7806AETU provides a fixed output voltage of 6V, eliminating the need for external components to set the output level.
- Wide Input Voltage Range: It can accept input voltages up to 35V, offering flexibility in power supply design.
- Protection Features: The device includes over-temperature and short-circuit protection, enhancing reliability and preventing damage under adverse conditions.
- Low Dropout Voltage: With a typical dropout voltage of 2V at 1A, the KA7806AETU can maintain regulation even when the input voltage is close to the output voltage.
- Compliance: The KA7806AETU is ROHS3 compliant, ensuring it meets environmental standards for hazardous substances.
KA7806AETU Applications
The KA7806AETU is ideal for a range of applications where a stable 6V supply is required. Its robust design and protection features make it suitable for:
- Consumer Electronics: Powering devices such as radios, amplifiers, and other low-power consumer electronics.
- Industrial Equipment: Providing stable power to sensors, actuators, and control systems in industrial environments.
- Telecommunications: Supplying power to low-power communication modules and peripherals.
- Automotive: Used in automotive electronics where a reliable and stable power supply is essential.
Conclusion of KA7806AETU
The KA7806AETU, despite being obsolete, remains a robust and reliable choice for applications requiring a stable 6V output. Its low quiescent current, high PSRR, and wide input voltage range make it a versatile regulator. The inclusion of over-temperature and short-circuit protection ensures long-term reliability, making it a preferred choice in environments where stability and safety are paramount. While newer alternatives may offer additional features, the KA7806AETU continues to serve well in its intended applications, offering a proven solution for stable power regulation.



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