MIC94310-4YM5-T5 Integrated Circuits (ICs)

Voltage Dropout (Max):	0.1V @ 200mA
Supplier Device Package:	SOT-23-5
Package / Case:	SC-74A, SOT-753
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C
Protection Features:	Over Current, Over Temperature
Control Features:	Enable
PSRR:	85dB ~ 50dB (100Hz ~ 10MHz)
Current - Quiescent (Iq):	250µA
Current - Output:	200mA
Series:	Ripple Blocker™
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	1.2V
Voltage - Input (Max):	3.6V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Discontinued at Digi-Key
Packaging:	Cut Tape (CT)

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Introduction

The MIC94310-4YM5-T5 is a programmable, low-power linear regulator ideal for powering low-power, low-voltage electronics. It is a voltage regulator that meets the needs of a wide range of battery-powered and line-powered applications. The device features a wide input voltage range and an adjustable output voltage range as low as 0.6V. It offers a low quiescent current, high accuracy, and high efficiency, making it a great choice for all types of system design.

Application Field

The MIC94310-4YM5-T5 is a versatile and reliable programmable, low-power linear regulator which is suitable for a variety of consumer, industrial and communications applications. It is well suited for both battery-powered and line-powered systems, and can be used to replace multiple fixed-output regulators in a variety of systems where space, power and cost are factors. The device is particularly well-suited for powering low-power, low-voltage electronics such as microcontrollers, DC-DC converters, sensors, FPGA core circuits and display drivers.

Working Principle

The MIC94310-4YM5-T5 combines an adjustable reference voltage source, a voltage buffer, and an output driver circuit together in a convenient package. The device operates in the linear mode, where the output voltage is regulated based on the relationship between the voltage at the input and reference voltage (VREF). The reference voltage is typically set to a fixed value, such as 1.2V or 1.8V, for applications where the output voltage does not vary. However, for applications where the output voltage must be varied, the reference voltage can be adjusted using a trim potentiometer.The voltage buffer is used to ensure that the output voltage remains stable regardless of changes in the output current, while the output driver circuit is used to provide each output with a proper load regulation. Additionally, the device also provides current limiting, thermal shutdown and logic-compatible shutdown at the edges of the operating range. The device is also equipped with both over-voltage and under-voltage protection circuits to provide additional system-level protection.

Conclusion

The MIC94310-4YM5-T5 provides an excellent solution for a variety of low-power, low-voltage applications. Its wide input voltage range, adjustable output voltage range, low quiescent current and excellent efficiency make it an ideal choice for powering microcontrollers, DC-DC converters, sensors, FPGA core circuits and display drivers. The device also provides additional protection with its comprehensive over-voltage and under-voltage protection circuits.

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