ADM7172ACPZ-R7

Current - Output:	2A
Base Part Number:	ADM7172
Supplier Device Package:	8-LFCSP-WD (3x3)
Package / Case:	8-WFDFN Exposed Pad, CSP
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C
Protection Features:	Over Current, Over Temperature
Control Features:	Enable, Soft Start
PSRR:	60db ~ 20dB (100kHz ~ 1MHz)
Current - Supply (Max):	8.7mA
Current - Quiescent (Iq):	2mA
Series:	--
Voltage Dropout (Max):	.27V @ 2A
Voltage - Output (Max):	6.23V
Voltage - Output (Min/Fixed):	1.2V
Voltage - Input (Max):	6.5V
Number of Regulators:	1
Output Type:	Adjustable
Output Configuration:	Positive
Part Status:	Active
Packaging:	Tape & Reel (TR)

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ADM7172ACPZ-R7 Application Field and Working Principle

Introduction

The ADM7172ACPZ-R7 is a linear voltage regulator from Analog Devices. It is a low dropout, 200mA, low-noise regulator with very low ground current. The unique design of the ADM7172ACPZ-R7 allows it to be used in a wide variety of applications including battery-powered portable electronics, cellular phones, personal digital assistants (PDAs), handheld GPS devices and automotive modules. The ADM7172ACPZ-R7 offers operating-voltage range from 1.8V to 4.6V, an excellent line and load regulation, and an adjustable output-voltage range from 0.8V to 3.6V, making it ideal for applications that require adjustment of the output levels.

Applications

The ADM7172ACPZ-R7 is widely used in portable, battery-powered devices due to its small profile and low operating current. It is popularly used in a variety of portable electronics such as PDAs, cellular phones, handheld GPS devices, automotive modules and other high-performance applications that require adjustable output levels.The low dropout voltage of the device, combined with the wide input voltage range and adjustable output-voltage range, make it ideal for battery-operated handheld devices. Additionally, it is capable of high-ripple rejection performance, high power-supply rejection performance and adjustable internal current-source current.Additionally, the low ground current of the ADM7172ACPZ-R7 also makes it suitable for portable instrumentation, alarm systems, and digital thermometers.

Working Principle

The ADM7172ACPZ-R7 is a low-dropout, adjustable linear regulator. It is similar to a regular linear regulator in that it uses the basic V=IR formula to regulate the voltage. However, it has a relatively low input voltage which means it can support higher output current than a regular linear regulator.The ADM7172ACPZ-R7 features a P-channel MOSFET pass transistor, an adjustable load, and an adjustable current source. The pass transistor is designed to operate as a high-efficiency regulator with an input voltage range of up to 4.6V. The adjustable load provides the ability to adjust the output voltage over a range of 0.8V to 3.6V. The adjustable current source allows for constant current for a wide range of load currents.

Conclusion

The ADM7172ACPZ-R7 is a low-dropout, 200mA, low-noise linear voltage regulator from Analog Devices. It is widely used in different portable electronics applications as it has an excellent line and load regulation, and an adjustable output-voltage range from 0.8V to 3.6V. The device is ideal for applications that require adjustable output levels. Additionally, the low ground current of the device also makes it suitable for portable instrumentation, alarm systems, and digital thermometers. The device is easy to use and offers improved performance and efficiency over regular linear voltage regulators.

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