L6731D

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Introduction

The L6731D is a low-side current protection switch embedded with power management integrated circuit (PMIC). It includes a precision voltage regulator which can regulate voltage both up or down while protecting devices from short circuit or over-voltage conditions. The device can operate with input voltages that range from 6 V to 28 V and can output a maximum of 2.8 A with a range of output currents that can be as low as 0.2 A. The device also features a low quiescent current of 0.8-1.3 mA and a low dropout voltage of 0.4 V for improved efficiency. The device\'s operating temperature range of -40°C to +125°C helps to ensure reliable performance at low and high temperatures.

Application

The L6731D is commonly used in automotive applications such as advanced driver assistance systems (ADAS) and infotainment. It can also be used in industrial, medical, residential, and commercial applications where accurare and reliable voltage regulation is needed for efficiently managing power.

In automotive applications, the L6731D is often used in applications that require efficient and reliable voltage control. For instance, it is often found in the systems of advanced driver assistance systems (ADAS) and infotainment systems. It can also be used in stabilizing the operating voltage of various automotive devices, such as sensors and solenoid valves. Other application areas include industrial, medical, residential, and commercial applications with a need for efficient and reliable voltage regulation.

Working Principle

The L6731D works by regulating output voltage based on the input voltage applied. It works in two different modes. In the regulating mode, the device will compare the input voltage to an internally set reference voltage and adjust the output voltage to maintain the correct level. When the input voltage exceeds the internally set voltage, the device will enter the limiting mode and limit the output voltage to a safe level. The device will then compare the output voltage to the internally set reference voltage and reduce it to the correct level as the input voltage drops below the set value.

The device also incorporates a low quiescent current that helps to ensure efficient operation and a low dropout voltage of 0.4 V that helps to reduce power losses. This helps the device to both maintain accuracy and energy efficiency while protecting devices from short-circuit or over-voltage conditions.

Conclusion

The L6731D is a low-side current protection switch designed for efficient and reliable voltage control. It can operate between a 6 V to 28 V input voltage range and output a maximum of 2.8 A with a range of output currents as low as 0.2 A. The device also features a low quiescent current of 0.8-1.3 mA and a low dropout voltage of 0.4 V that help to reduce power losses and improve energy efficiency. The device is suitable for various automotive, medical, industrial, residential and commercial applications where regulated and precise voltage level is required.

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