MIC2225-4MYMT-TR

Voltage/Current - Output 3:	--
Base Part Number:	MIC2225
Supplier Device Package:	10-TMLF® (2x2)
Package / Case:	10-UFDFN, 10-TMLF®
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C
Voltage - Supply:	2.7 V ~ 5.5 V
w/Sequencer:	No
w/Supervisor:	No
w/LED Driver:	No
Series:	--
Voltage/Current - Output 2:	2.8V, 300mA
Voltage/Current - Output 1:	1.2V, 600mA
Frequency - Switching:	2MHz
Number of Outputs:	2
Function:	Any Function
Topology:	Step-Down (Buck) (1), Linear (LDO) (1)
Part Status:	Active
Packaging:	Tape & Reel (TR)

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MIC2225-4MYMT-TR Application Field and Working Principle

Introduction

The MIC2225-4MYMT-TR is a low-cost power management integrated circuit (PMIC) designed to regulate the output voltage from a power source. It belongs to the voltage regulator category and provides a linear and/or switching voltage regulation solution.The MIC2225-4MYMT-TR PMIC features a fully integrated current mode control architecture with a high accuracy, low power dissipation, and a wide output voltage range from an input supply of 6 to 45V. It is well-suited for controlling a 3.3 to 5V output voltage in high density and low voltage applications.

Applications

The MIC2225-4MYMT-TR offers a variety of applications, ranging from mobile communication systems, PC and server mainboard, automotive, and industrial control systems. It can drive a wide variety of output voltages and provide a high accuracy regulation.The MIC2225-4MYMT-TR is applicable in many products such as wireless base stations, cellular phones, digital cameras and hand-held devices, automotive telematics, notebook, and desktop PCs, medical equipment, and medical instrumentation systems.As its output voltage range is 3.3 to 5V, the MIC2225-4MYMT-TR is ideal for use in powering a variety of loads such as DSPs, LCD/LED display, FPGAs and microprocessors which are powered by either an AC-DC switch mode power supply (SMPS) or a battery. The MIC2225-4MYMT-TR may also be used in applications that require a wide range of operational amplifiers, comparators, regulators, and references such as ADC, DAC and LCD related designs.

Features

The MIC2225-4MYMT-TR features a high-efficiency and precision voltage regulation, which helps to reduce the overall system power consumption. In addition, it provides clean and stable output voltage with fast transient response and low ripple.The MIC2225-4MYMT-TR contains an adjustable precision voltage regulator, which can be set to sustain a wide output voltage range. The device has an adjustable current sensing range which helps to provide a more accurate and precise regulation to meet the user’s specifications.The MIC2225-4MYMT-TR has an input terminal with an operating voltage range of 6 to 45V that can handle up to 100A of load current, making it ideal for applications that demand a large amount of power. Its high-frequency operation ensures low thermal dissipation and low audible noise.

Working Principle

The MIC2225-4MYMT-TR mainly contains four transistors and a control circuitry that works together to regulate the output voltage in order to maintain the output voltage accuracy. The control circuitry is responsible for monitoring the output voltage, input voltage, and the load current. When the load current increases or the input voltage decreases, the control circuitry will adjust the turn-on of the transistors in order to maintain the desired output voltage. The load current breaks the signal on the current pin, which is sensed by the control circuitry and it will determine the duty cycle of the transistors. The duty cycle will then be adjusted to control the output voltage. When the input voltage is within the operating voltage range, the control circuitry will be running and the device will be in the normal operation mode. The operating voltage range of this device is 6 to 45V, with a maximum load current rating at 100A.

Conclusion

The MIC2225-4MYMT-TR is a PMIC with a fully integrated current mode control architecture that is designed to provide a high accuracy, low-noise, and high-efficiency voltage regulation. It is ideal for use in DSPs, LCD/LED display, and microprocessor applications which require an output voltage between 3.3 and 5V. This device features a wide range of operating voltage and current sensing range, providing a more accurate and precise regulation and a fast transient response. The MIC2225-4MYMT-TR is a low cost PMIC suitable for high-density and low voltage applications.

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