Voltage Dropout (Max):	0.6V @ 3A
Base Part Number:	MIC29301-12
Supplier Device Package:	TO-220-5
Package / Case:	TO-220-5
Mounting Type:	Through Hole
Operating Temperature:	-40°C ~ 125°C
Protection Features:	Over Current, Over Temperature, Reverse Polarity, Transient Voltage
Control Features:	Enable
PSRR:	--
Current - Output:	3A
Series:	--
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	12V
Voltage - Input (Max):	26V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Active
Packaging:	Tube

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MIC29301-12WT Application Field and Working Principle

Linear voltage regulators are usually used to provide a stable output voltage in order to influence a circuit\'s output value. Linear voltage regulator MIC29301-12WT is a step-down switching regulator that offers a high level of flexibility and efficiency in portable power applications such as cell phones, personal digital assistants, and cameras.In this article, we will provide an overview of the MIC29301-12WT, the application field and it\'s working principles.

Overview of MIC29301-12WT

The MIC29301-12WT is a versatile, step-down switching regulator. It integrates boost and buck functions, providing seamless transitions between input and output voltages. The combination of these two functions enables the MIC29301-12WT to work in multiple input voltage types, ranging from 6V to 10V.The MIC29301-12WT has an adjustable output voltage range from 0.8V to 12V, and provides higher switching frequency (1.8 MHz) to maintain high efficiency. Its built-in Accurate-Charge and Accu-Voltage technologies adjust the charging current, enable fast charging, and maintain the accuracy of the output voltage.Furthermore, the MIC29301-12WT implements synchronous rectification that is able to reduce switching loss. The MIC29301-12WT also includes an integrated soft-start function and thermally enhanced packages to extend solution lifetime.

Application Fields

The MIC29301-12WT is commonly used in portable and on-the-go power applications including mobile devices, home appliances, portable computing products, and automotive.In terms of mobile devices, such as digital cameras, the MIC29301-12WT is mainly used in portable chargers to keep the device powered up, as well as the batteries which need a boost to the higher voltages required by the device. It can also help to reduce the overall power consumption, as the device\'s power input can be efficiently and precisely managed to a wide range of voltages. In terms of home appliances and automotive products, the MIC29301-12WT can provide consistent, high-efficiency charging suitable for various types of batteries.

Working Principle of MIC29301-12WT

The MIC29301-12WT utilizes a synchronous step-down converter design that creates a regulated output voltage from a higher input voltage. This is achieved by switching a power MOSFET transistor to build up a voltage from the source voltage.The switching is controlled by an internal pulse width modulation (PWM) controller, and the output voltage is monitored using its built-in Accu-Voltage technology. When the output voltage is lower than the desired value, the PWM controller increases the duty cycle of the power MOSFET switch, resulting in an increase in output voltage. On the other hand, when the output voltage is higher than the desired value, the PWM controller reduces the duty cycle, causing the output voltage to decrease.The MIC29301-12WT also features an Accurate-Charge technology that accurately controls the output current, making the charger more reliable and efficient. This works by monitoring the output current and adjusting the switch duty cycle to achieve the desired current.

Conclusion

The MIC29301-12WT is a highly versatile and efficient step-down switching regulator used in portable power applications. It operates using a synchronous step-down converter design to provide a stable output voltage given various input voltages, and also includes several technologies to ensure high accuracy and efficiency. In addition, the MIC29301-12WT is versatile enough to be used in a wide range of applications, including mobile devices, home appliances and automotive products.

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