RT9080-18GQZ

Voltage Dropout (Max):	0.83V @ 600mA
Supplier Device Package:	4-ZQFN (1x1)
Package / Case:	4-XDFN Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C (TA)
Protection Features:	Over Current, Over Temperature
Control Features:	Enable
PSRR:	75dB (1kHz)
Current - Quiescent (Iq):	4µA
Current - Output:	600mA
Series:	--
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	1.8V
Voltage - Input (Max):	5.5V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Introduction

RT9080-18GQZ is a voltage regulator equipped with adjustable voltage output. It is a linear voltage regulator, which is used in many application fields, such as industrial and consumer electronic, automotive and computing. This article will discuss the application fields and working principle of this regulator.

Application fields

The RT9080-18GQZ is a highly integrated power management solution for all of your displayed battery-powered applications. It offers high-performance, high-efficiency linear regulation for 3.1V ~ 24V output voltage. The chip can be used in many application fields. For consumer electronic fields, the RT9080 is used for charger IC of mobile equipment, power system design of TVs, data back-up and jump start system design, as well as cryptocurrency mining. In the automotive field, it is used in power distribution system design, smart charging pile design. In industrial field, it is used in system optimization and new energy applications, such as field monitoring and smart grid of remote control power system.

Working Principle

The RT9080-18GQZ is a linear power supply or regulator that takes in a DC input and provides a regulated DC output voltage. Its working principle is simple. It utilizes Thevenin equivalent circuit derived from the buck or boost converter, includes two series diode, a resistor and a Zener diode, followed by an operational amplifier (OPA) to sense the output voltage. The buck or boost converter is a switching buck-boost converter, consisting of An internal voltage regulator, FET logic to provide power, output switch, and a high-side switch controller. The internal voltage regulator controls the FET logic, which provide the power, while the output switch is used to open and close the power path. The high-side switch controller will provide PWM control signals to the FET.When the input voltage is greater than the output voltage, the Buck converter will start working and the output switch will be opened. The output voltage is dropped to compensate the input voltage, and the current will flow form the input to output. When the input voltage is lower than the output voltage, the boost converter will start working and the output switch will be opened. The increased current from the output is pumped up the voltage of the output node. The output voltage will be increased until it is equal to the input voltage.

Benefits of using RT9080-18GQZ

The RT9080-18GQZ can provide high-efficiency, low-ripple and low-noise regulation for 3.1V ~ 24V output voltage. Its low-dropout voltage also enables it to maintain high efficiency during light load conditions. With the wide input voltage range and high accuracy, it can effectively reduce the power consumption of the mobile application. It also supports Ultra Fast Transient Response, which can provide fast reaction time in dynamic load conditions. The RT9080-18GQZ also has built-in protection features, such as short circuit protection and over voltage protection. These functions can effectively protect your equipment and extend its lifespan. Moreover, it has a tiny footprint and very low standby current. It can also reduce system cost in many applications, as well as reduce time-to-market.

Conclusion

In conclusion, the RT9080-18GQZ is a linear power supply or voltage regulator with adjustable voltage output. It is widely used in many different application fields, such as industrial and consumer electronic, automotive and computing. The working principle of the RT9080-18GQZ is based on buck or boost converter, which uses an internal voltage regulator, FET logic to provide power, output switch and high-side switch controller. It also offers many benefits, such as high-efficiency, low-ripple, low-noise regulation, wide input voltage range, high accuracy, built-in protection functions, as well as low-footprint and low-standby current consumption.

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