MIC5219BMM

Current - Output:	500mA
Base Part Number:	MIC5219
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:	75dB (120Hz)
Current - Quiescent (Iq):	8µA
Series:	--
Voltage Dropout (Max):	0.6V @ 500mA
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	Adjustable
Voltage - Input (Max):	12V
Number of Regulators:	1
Output Type:	Adjustable
Output Configuration:	Positive
Part Status:	Discontinued at Digi-Key
Packaging:	Tube

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MIC5219BMM Voltage Regulator

The MIC5219BMM voltage regulator is a high-performance Linear voltage regulator designed for use in a variety of applications. It is manufactured with an ultra-low quiescent current and is capable of operating at high frequencies and low input voltage headroom. The device has low noise output and is available in fixed output versions.

Applications

The MIC5219BMM voltage regulator is suitable for a number of applications such as:

• Embedded systems with low quiescent current requirements
• Battery-powered systems
• Personal computers
• Gaming consoles
• Home networking systems
• Wireless communications
• Automotive applications
• High frequency circuits
• High-speed data communications

Features

The MIC5219BMM voltage regulator offers a range of features, including:

• Ultra-low quiescent current: 20 uA typ
• Operating frequency range: 1 KHz - 10 MHz
• Voltage headroom: 1.15V - 4.85V
• Input voltage range: 0.9V - 6V
• Up to 3A output current with 45A peak current
• Low output voltage ripple: 40 mV typ. at 4.85V
• Wide input and output voltage ranges (0.9V - 6V and 3.3V - 7.2V)
• Integrated power-on reset and power-good signals
• Stable with all types of capacitive loading
• Thermal shutdown protection
• Selectable shutdown and enable functionality

Working Principle

The MIC5219BMM voltage regulator is an ultra-low quiescent current Linear voltage regulator. The input voltage is filtered and regulated via an emitter-follower circuit. The linear regulator consists of an input amplifier, an error amplifier and a power transistor, which together form a feedback control loop. The output voltage is controlled by the gain and offset settings of the error amplifier. The output voltage is monitored and adjusted by the power transistor so that it matches the desired output voltage. The power transistor is connected to the output pin of the linear regulator and driven by the output voltage of the error amplifier. The output voltage is set by adjusting the feedback resistors. The MIC5219BMM is also equipped with an automatic thermally-controlled shutdown device, which will activate if the device\'s temperature exceeds its maximum rated temperature.

Conclusion

The MIC5219BMM voltage regulator is an advanced Linear voltage regulator designed for use in a variety of applications. It is optimized for low quiescent current and low input voltage headroom, and offers a wide input and output voltage range, stable output voltage, and thermal shutdown protection. With its robust features and reliable performance, the MIC5219BMM voltage regulator is an ideal choice for embedded systems, gaming consoles, personal computers, and other applications requiring reliable power regulation.

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