MIC4576-3.3WU-TR

Voltage - Output (Min/Fixed):	3.3V
Base Part Number:	MIC4576
Supplier Device Package:	TO-263-5
Package / Case:	TO-263-6, D²Pak (5 Leads + Tab), TO-263BA
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C (TA)
Synchronous Rectifier:	No
Frequency - Switching:	200kHz
Current - Output:	3A
Voltage - Output (Max):	--
Series:	--
Voltage - Input (Max):	36V
Voltage - Input (Min):	4V
Number of Outputs:	1
Output Type:	Fixed
Topology:	Buck
Output Configuration:	Positive
Function:	Step-Down
Part Status:	Active
Packaging:	Tape & Reel (TR)

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MIC4576-3.3WU-TR Application Field and Working Principle

Introduction:

The MIC4576-3.3WU-TR is a low Dropout (LDO) linear regulator that operates from an input voltage up to 10V. It provides an output voltage of 3.3V at up to 3.3A. It is designed for applications that require high accuracy, low noise and low power consumption, such as handheld & mobile devices, personal digital assistants (PDAs), cellular phones and other portable devices.

Application Field

The MIC4576-3.3WU-TR regulator is designed to be used in a wide range of portable devices. It is ideal for applications where an input voltage of up to 10V is required, such as handheld & mobile devices, personal digital assistants (PDAs), cellular phones and other portable devices. Additionally, its low dropout voltage makes it suitable for applications where the difference between the input and output voltages is small. Its wide operating temperature range of -40°C to +85°C ensures the circuit will remain stable in a range of situations.

Working Principle

The MIC4576-3.3WU-TR operates on the principle of a linear regulator. It is a three terminal device, consisting of a voltage input (VIN), a voltage output (VOUT) and a ground (GND). When a voltage is applied to the input, the regulator converts the input voltage to a stable 3.3V output voltage at the output terminal.To achieve this, the regulator uses a voltage reference circuit, an amplifier, a resistive feedback loop and a control element to control the output voltage. As the input voltage changes, the control element changes its resistance, thus changing the amount of current flowing through the feedback loop. This in turn causes the output voltage to adjust accordingly.The MIC4576-3.3WU-TR is capable of providing an output current of up to 3.3A, with a dropout voltage of 0.3V. It also features a high input voltage range of up to 10V and a wide operating temperature range of -40°C to +85°C.

Conclusion

The MIC4576-3.3WU-TR is a low Dropout (LDO) linear regulator designed for portable applications. It is capable of providing an output voltage of 3.3V at up to 3.3A, with a dropout voltage of 0.3V. Its wide input and operating temperature ranges make it suitable for a range of applications. Its working principle involves using a voltage reference, an amplifier, a resistive feedback loop and a control element to adjust the output voltage in response to changes in input voltage.

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