MIC49150-0.9BR TR

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Obsolete
Output Configuration:	Positive
Output Type:	Fixed
Number of Regulators:	1
Voltage - Input (Max):	6.5V
Voltage - Output (Min/Fixed):	0.9V
Voltage - Output (Max):	--
Voltage Dropout (Max):	0.5V @ 1.5A
Current - Output:	1.5A
PSRR:	--
Control Features:	Enable
Protection Features:	Over Current, Over Temperature
Operating Temperature:	-40°C ~ 125°C
Mounting Type:	Surface Mount
Package / Case:	SPak-5 (5 leads + Tab)
Supplier Device Package:	S-PAK-5
Base Part Number:	MIC49150

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Introduction

The MIC49150-0.9BR TR is a linear voltage regulator that is designed to provide a high efficiency, low noise, and low dropout voltage regulation solution. The maximum input voltage is 45V while the output voltage is regulated to 0.9V. The high current capability allows the regulator to maintain high efficiency under load. The device uses an internal PMOS transistor to provide enhanced voltage regulation and load regulation performance.

Architecture

The MIC49150-0.9BR TR linear voltage regulator is a three-terminal device which consists of an NMOS Pass Transistor, Feedback and Input LDO, and Output Driver components.The NMOS Pass Transistor is the device used to transfer power from the input to the output and is controlled by the feedback and input LDO. The Pass Transistor has low on-resistance and is capable of driving up to 10A continuous load.The Feedback and Input LDO is used to regulate the output voltage of the regulator and is connected to the pass transistor via an opto-coupler. The opto-coupler provides an isolation between the pass transistor and the feedback and input LDO. The feedback and input LDO is used to control the bias current to the pass transistor and maintain a stable output voltage.The Output Driver is used to provide a regulated output voltage. The Output Driver consists of a boost regulator, error amplifiers, overcurrent protection circuits, output stage, and power monitor. The Output Driver is responsible for detecting overcurrent conditions and providing overcurrent protection for the regulator.

Working Principle

The MIC49150-0.9BR TR linear voltage regulator has three main components: the NMOS Pass Transistor, Feedback and Input LDO, and Output Driver. These components work together to ensure a high efficiency, low noise, and low dropout voltage regulation solution.When the power supply is connected, the feedback and input LDO is used to control the bias current to the pass transistor, which is responsible for transferring power from the input to the output. The output voltage is regulated to 0.9V and the overcurrent protection circuits ensure that the regulator remains protected from current overloads. The Output Driver is used to provide a regulated output voltage. It consists of a boost regulator, error amplifiers, overcurrent protection circuits, output stage, and power monitor. The Output Driver is responsible for detecting overcurrent conditions and providing overcurrent protection for the regulator.

Application Fields

The MIC49150-0.9BR TR linear voltage regulator is particularly well-suited for applications that require a high efficiency, low dropout voltage regulation solution. It is especially suitable for applications such as motor control, power management, and automotive applications. The regulator can also be used in other applications that require a high current and low noise performance, such as server power and automotive infotainment.

Conclusion

The MIC49150-0.9BR TR is a Linear Voltage Regulator specifically designed to provide a high efficiency, low noise, and low dropout voltage regulation solution. The device utilizes an internal PMOS transistor to ensure high current capability and superior voltage regulation and load regulation performance. The regulator is suited for applications requiring a high efficiency, low noise, and low dropout solution, such as motor control, power management, and automotive applications. The regulator can also be used in other applications that require a high current and low noise performance, such as server power and automotive infotainment.

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