ADP7118AUJZ-4.5-R7

Current - Output:	200mA
Base Part Number:	ADP7118
Supplier Device Package:	5-TSOT
Package / Case:	SOT-5
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C (TA)
Protection Features:	Over Current, Over Temperature
Control Features:	Enable, Soft Start
PSRR:	88dB ~ 50dB (10kHz ~ 1MHz)
Current - Supply (Max):	320µA
Current - Quiescent (Iq):	140µA
Series:	--
Voltage Dropout (Max):	0.42V @ 200mA
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	4.5V
Voltage - Input (Max):	20V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Application Field and Working Principle of ADP7118AUJZ-4.5-R7

The ADP7118AUJZ-4.5-R7 is a low-dropout (LDO) linear voltage regulator that provides a regulated output voltage of 4.5 volts and can be used in a variety of applications. The device is designed to provide accurate and reliable operation over a wide operating temperature range and is specifically designed to help maintain system stability in harsh operating environments.The ADP7118AUJZ-4.5-R7 offers a low-dropout voltage of 1 V (TYP.). A small dropout voltage equates to low quiescent current, which can effectively reduce power dissipation in the system, resulting in improved battery life. The device also features a wide input voltage range from 2.2 V to 5.5 V and a current rating of up to 1 A. The device offers excellent long-term stability and protects against short circuit, overvoltage, and over-temperature conditions. The device also offers various features such as high-voltage reverse current limiting, reverse battery protection, and fast turn-on times.The ADP7118AUJZ-4.5-R7 voltage regulator operates with a linear regulator topology and consists of a bandgap reference, error amplifier, pass device, and supporting components. The bandgap reference provides a voltage reference of 4.5 V, which is applied to the non-inverting input of the error amplifier. The error amplifier compares the reference voltage to the output voltage. The output voltage of the error amplifier is then applied to the gate of the pass device, either a P-channel MOSFET or N-channel MOSFET, which controls the conduction of the pass device. The output voltage of the pass device is connected to the output terminal and filtered by an RC network.In summary, the ADP7118AUJZ-4.5-R7 is an LDO linear voltage regulator designed to provide regulated output voltages of 4.5 V. The device features a low-dropout voltage of 1 V (TYP.), a wide input voltage range from 2.2 V to 5.5 V, and excellent long-term stability. The device includes features such as high-voltage reverse current limiting, reverse battery protection, and fast turn-on times. The device utilizes a linear regulator topology and consists of a bandgap reference, error amplifier, pass device, and supporting components. Thus, the ADP7118AUJZ-4.5-R7 is an ideal device for applications requiring reliable output voltage regulation and superior long-term stability.

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