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LT1373CS8#PBF Application Field and Working Principle

The LT1373CS8#PBF, manufactured by Linear Tech, is a low noise, low dropout voltage regulator featuring an 800mA output current. This DC-DC switching regulator is designed for applications requiring a high performance, cost-effective, wide input voltage range solution. Commonly used in industrial settings and medical devices, this parts is ideal for applications that require reliable and accurate output despite significant power supply fluctuations.

Features

• Fault protection
• Wide input voltage range
• High frequency operation
• Low dropout voltage
• Low output voltage tolerances
• Extended temperature range
• Low noise

Applications

The LT1373CS8#PBF is used in a variety of industrial applications, including:

• Automotive systems
• Medical equipment
• Measurement and control instruments
• Industrial automation
• Data logging

Working Principle

The LT1373CS8#PBF uses hysteretic control to provide an accurate output voltage. It is a step-down DC-DC switching regulator that controls output switching using a digital control loop. This mechanism employs an error amplifier, a voltage reference, and a hysteretic comparator. The error amplifier senses the output voltage and produces an output signal that is compared with a reference voltage. When the output voltage is lower than the reference voltage, the comparator activates the error amplifier. The amplifier then activates the transistor, causing it to switch on. The added current from the transistor causes the output voltage to rise and reduce the reference voltage. When the output voltage is again lower than the reference voltage, the comparator actsuates the switching transistor and the cycle repeats.

The LT1373CS8#PBF is protected from short circuit conditions, over-temperature and input overvoltage. The IC also includes undervoltage lockout and a thermal shutdown circuit, along with other features. It also includes soft start, allowing the user to limit the inrush current at startup. This helps to protect your system from damage due to large input currents.

Conclusion

The LT1373CS8#PBF, manufactured by Linear Tech, is a low noise, low dropout voltage regulator featuring an 800mA output current and is designed for applications requiring a high performance, cost-effective, wide input voltage range solution. It is commonly used in industrial settings and medical devices, and is ideal for applications that require reliable and accurate output despite significant power supply fluctuations. It uses hysteretic control to provide an accurate output voltage and is protected from short circuit conditions, over-temperature and input overvoltage. With its many features, the LT1373CS8#PBF is sure to be a great choice for your industrial, medical or data logging applications.

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