MIC5381-G4YFT-TR

Current - Output:	150mA, 150mA
Base Part Number:	MIC5381
Supplier Device Package:	6-TMLF® (1x1)
Package / Case:	6-UFQFN, 6-TMLF®
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C
Protection Features:	Over Current, Over Temperature
Control Features:	Enable
PSRR:	60dB (1kHz)
Current - Supply (Max):	85µA
Current - Quiescent (Iq):	45µA
Series:	--
Voltage Dropout (Max):	0.31V @ 150mA, 0.31V @ 150mA
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	1.2V, 1.8V
Voltage - Input (Max):	5.5V
Number of Regulators:	2
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Active
Packaging:	Tape & Reel (TR)

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MIC5381-G4YFT-TR Application Field and Working Principle

Introduction

The MIC5381-G4YFT-TR is a high accuracy, ultras low noise dual voltage regulator which uses current regulated architecture. It is offered in the SO-14 package, making it ideal for space constrained applications. The MIC5381-G4YFT-TR offers two linear voltage regulators – an output voltage of 1.1V and 1.8V, which can provide up to 2A of load current. Both output voltages are adjustable and can be controlled independently with an external resistor. The features of the MIC5381-G4YFT-TR make it a suitable choice for high-performance, low-noise systems.

Application Field

The MIC5381-G4YFT-TR is designed for high-performance, low-noise systems, as well as for space-constrained applications. It is particularly well suited for ground reference, multiple low voltage supplies, image sensor bias and motor driver applications. The MIC5381-G4YFT-TR is also suitable for precision high-speed data converters, audio systems, LAN equipment and automotive applications which require low-noise operation.

Working Principle

The MIC5381-G4YFT-TR adopts current regulated architecture which enables an output voltage that is stable regardless of load current or variations in operating temperature. Both outputs are regulated by one set of external resistors, with the 1.1V being regulated via a resistive divider connected between the two regulators and the 1.8V being regulated separately by its own separate resistive divider. This configuration also eliminates any cross regulation that is normally associated with two linear regulator ICs. In addition, each output has a separate error amplifier which provides additional flexibility to achieve maximum output accuracy.The MIC5381-G4YFT-TR is highly integrated and incorporates several features that further improve its performance. The device includes an adjustable current-limit circuit and thermal-shutdown protection that protects both outputs from overcurrent and over-temperature conditions. A wide supply voltage range of 2.7V to 8V allows the device to work in a variety of applications. The MIC5381-G4YFT-TR also has additional benefits as a dual-supply linear regulator such as low quiescent current, low noise and power-saving operation. Both outputs are optimized for low noise in their respective frequency ranges, enabling noise sensitive circuits to obtain optimal performance. The output noise is minimized through the use of a noise regulator and advanced loop networks.The MIC5381-G4YFT-TR is a versatile device that is reliable and cost-effective. It offers many features that enhance its performance in demanding applications. With its resistance-trimmable architecture, it is easy to configure and its versatile range of supply voltages make it an ideal choice for space-constrained applications.

Conclusion

The MIC5381-G4YFT-TR is a well-designed dual voltage regulator device with a wide range of applications in low-noise, high performance systems. It is highly integrated and offers adjustable current limit and thermal shutdown protection. Its features make it suitable for ground reference, multiple low voltage supplies, image sensor bias and motor driver applications. It has excellent noise characteristics and is cost-effective, making it a good choice for space-constrained applications.

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