MIC5265-3.3YD5-TR

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The MIC5265-3.3YD5-TR is a three-terminal low dropout (LDO) regulator with a wide input voltage range of 1V~17V. It features extremely low quiescent current of just 13μA, making it an ideal choice for battery-powered applications. Additionally, it is designed to provide fast response time and extremely low dropout voltage. The MIC5265 also includes output voltage accuracy of ±1.5%, thermal and short-circuit protection, and over-current protection (via an internal current sense resistor).

Application Field

The robust, compact design of the MIC5265 makes it suitable for many different applications. It is a perfect fit for portable electronic devices, such as personal digital assistants (PDAs), portable music players, digital cameras, and more. Additionally, the MIC5265 can be used in many automotive, industrial, and telecommunications applications, including microprocessor and digital signal processing (DSP) circuits.

The MIC5265 is also ideal for medical and healthcare applications. Its low power consumption and extremely accurate output voltage makes it an excellent choice for powering implanted medical devices and critical medical care equipment. It also has excellent reliability and robust protection features, making it a great choice for powering medical instrumentation.

Working Principle

The MIC5265 operates on a simple voltage regulation principle. Its internal circuitry compares the voltage on the output of the regulator to a predetermined reference voltage. Depending on the magnitude of the difference between the two, a current is allowed to flow either in or out of the error amplifier. This current is then used to activate a feedback loop within the regulator, which then adjusts the output voltage accordingly.

The MIC5265\'s circuit is also designed to provide over-current protection. An onboard current sense resistor monitors the output current, and activates the on-chip overload protection circuit when the current exceeds the specified limit. Additionally, the MIC5265 also provides thermal and short circuit protection. A temperature sensor keeps track of the regulator\'s temperature, and shuts off the output when the temperature gets too high. If a short circuit is detected, the current limitation circuitry is activated, and automatically shuts down the output.

The MIC5265 also includes an Enable pin, which allows the user to switch off the regulator and activate a low-power standby mode. This is an excellent feature for extending battery life. Additionally, the ENABLE pin can also be used to sequentially start and stop loads in order to reduce in-rush current.

In summary, the MIC5265 is a versatile, low dropout three-terminal regulator ideal for powering a wide range of applications. Its low quiescent current, fast response time, and robust protection features make it an ideal choice for low-power devices and critical medical care equipment. Additionally, its simple voltage regulation principle, ingress protection, and enable pin allow users to easily customize the regulator to fit their application\'s needs. Therefore, the MIC5265 is a great choice for anyone looking for an efficient and reliable low-dropout linear regulator.

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