REG102UA-AG4

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The REG102UA-AG4 is a low-dropout linear voltage regulator. This device is a three-pin, adjustable, current-limiting adjustable relative to the output voltage. It is designed to operate from a 2.5V to 5.5V input supply and is capable of delivering a current of up to 100mA. The device is designed to operate across a wide range of operating temperatures, from -40°C to +85°C.

Features of the REG102UA-AG4

• Wide operating temperature range from -40°C to +85°C
• Output voltage range adjustable from 1.2V to 5.5V
• Current limiting up to 100mA
• Low-dropout voltage of 80mV
• High PSRR of 56dB @ 10kHz
• No external components required

Applications

The REG102UA-AG4 is ideally suited for use in mobile phones, personal digital assistants, GPS, industrial instrumentation and other applications requiring adjustable, low-dropout voltage regulation. The device is also suitable for use in automotive, telecommunication, medical and industrial applications.

Working Principle

The REG102UA-AG4 employs a voltage reference and an error amplifier to set the output voltage. The output voltage is regulated by controlling the power to the output transistor via the error amplifier. The output voltage is set by the combination of a resistive divider and an adjustable reference voltage. The error amplifier is used to compare the output voltage with the adjustable reference voltage and to provide control feedback to the output transistor to regulate the output voltage. The current limit circuit prevents the device from being damaged due to excessive load current.

Conclusion

The REG102UA-AG4 is a versatile, low-dropout linear voltage regulator. It is capable of operating over a wide operating temperature range, delivering up to 100mA of output current. The device is suitable for use in a variety of applications requiring adjustable voltage regulation. The device is also suitable for use in automotive, telecommunication, medical and industrial applications.

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