LE52ABD

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LE52ABD is a complete low dropout (LDO) linear voltage regulator that can provide up to 500mA of continuous output current. The LE52ABD features high precision voltage regulation with an external voltage adjustment by two external resistors. This regulation accuracy over temperature is guaranteed to be within ±2%.

The LE52ABD is integrated with a handful of protection features. This includes over-temperature protection (OTP) , over-current protection (OCP) , output short-circuit protection (OSC) , and reverse-current flow protection (RCF).

This makes it suitable for applications that demand high precision voltage output, and reliability. It is suitable for post-processing applications such as LCD backlight, automotive circuit, USB power supply, adapter, and similar uses.

The LE52ABD\'s working principle is simple. It uses the output voltage, available from its internal reference source, to compare to the value preset on the output voltage adjustment. The voltage on the adjustment pin is given by two external resistors, R1 and R2. The output voltage is adjusted by changing the ratio of R1 and R2. Once the output voltage is obtained, it is continuously regulated by an internal error amplifier.

In the event of a fault, the protection features will take action and stop the power supply or signal an alarm. The LE52ABD features 70µA of standby current, making it suitable for portable and battery powered applications.

The LE52ABD also has a low noise linear regulator that offers a clear and noiseless power supply system. This is accomplished by using different circuit topologies, providing high intensity ripple rejection. The average noise level is below 10mV on the entire frequency range and with the components used in this configuration the LE52ABD provides high quality voltage stability while maintaining good efficiency.

The LE52ABD has a very high output voltage accuracy with ±1% under all conditions over temperature, allowing for a more accurate power supply system. This makes it an ideal choice for critical circuitry for automotive and medical applications.

With a long dropout voltage of less than 0.8V, the LE52ABD is perfect for applications where minimum dropout voltage is required. This allows for the device to regulate low input voltage sources.

In summary, the LE52ABD is a complete low dropout linear voltage regulator providing 500mA of continuous output current. It features high precision voltage regulation and a handful of protection features. It has a working principle that uses the output voltage available from the internal reference source to compare with the value preset on the output voltage adjustment. It is suitable for post-processing applications such as LCD backlight, automotive circuit, USB power supply, adapter, and similar uses. It has a low noise linear regulator and provides a high intensity ripple rejection. Moreover, it has a very high output voltage accuracy and is an ideal choice for critical circuitry for automotive and medical applications.

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