MIC5208-3.3BMM

Current - Output:	50mA, 50mA
Base Part Number:	MIC5208
Supplier Device Package:	8-MSOP
Package / Case:	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C
Protection Features:	Over Current, Over Temperature, Reverse Polarity
Control Features:	Enable
PSRR:	--
Current - Supply (Max):	1.2mA
Current - Quiescent (Iq):	750µA
Series:	--
Voltage Dropout (Max):	0.5V @ 50mA, 0.5V @ 50mA
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	3.3V, 3.3V
Voltage - Input (Max):	16V
Number of Regulators:	2
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Discontinued at Digi-Key
Packaging:	Tube

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Introduction

The MIC5208-3.3BMM is a low-dropout (LDO) three-terminal linear voltage regulator designed to regulate the output voltage to approximately 3.3V. It offers maximum convenience, flexibility and design simplicity to the system designer, providing excellent line and load regulation. With a maximum dropout of 0.3V at 600mA, the MIC5208-3.3BMM is well suited for a wide variety of applications. This article will discuss the application fields and working principle of the MIC5208-3.3BMM.

Appications

The MIC5208-3.3BMM can be tailored to fit a number of applications requiring a regulated 3.3V output. These include powering of peripherals, data/signal transmission and processing, logic control, providing power for buses, and providing supply power for digital signal processors.The MIC5208-3.3BMM can also be used to regulate the output of DC/DC converters and switching power supplies. By reducing the voltage ripple caused by the switching frequency and improving the ripple rejection ratio, the MIC5208-3.3BMM can improve the efficiency of the DC/DC converter or switching power supply.In addition, the MIC5208-3.3BMM can be used to provide an accurate low voltage reference such as 2.5V or 3.3V. This can be used to improve the accuracy of ADC or DAC circuits. The MIC5208-3.3BMM can also be used in automotive applications, as it is rated for operation at temperatures up to 125°C.

Working Principle

The MIC5208-3.3BMM is a three-terminal linear regulator, which means that it uses linear voltage regulation. Linear voltage regulation occurs when the input voltage (Vin) is greater than the desired output voltage (Vout). A circuit, usually a voltage reference device, is used to control an internal PNP pass transistor. The transistor is used to regulate the output voltage to a set level, set by the reference device, by diverting excess current from the output to ground.The MIC5208-3.3BMM features an internal PNP pass transistor with an MOSFET gate. The MOSFET gate is used to provide additional control of the pass transistor, aiding in the ability to regulate the output voltage more precisely. The MIC5208-3.3BMM also features feedback loop control. The feedback loop is used to sense the output voltage and control the output voltage by means of a slight adjustment to the internal reference voltage, also known as “droop compensation”.

Conclusion

The MIC5208-3.3BMM is an excellent example of a low-dropout three-terminal linear voltage regulator. It is well suited for a variety of applications, from supplying a precise voltage reference for digital signal processors and ADCs, to providing an output to power peripherals and buses. In addition, the MIC5208-3.3BMM is rated for operation at temperatures up to 125°C, which makes it suitable for use in automotive applications. With its low dropout voltage and high output current capability, the MIC5208-3.3BMM is a reliable and efficient choice for any project.

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