RT9198-18GJ5

Voltage Dropout (Max):	0.33V @ 300mA
Supplier Device Package:	TSOT-23-5
Package / Case:	SOT-23-5 Thin, TSOT-23-5
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C
Protection Features:	Over Current, Over Temperature
Control Features:	--
PSRR:	60dB ~ 30dB (100Hz ~ 10kHz)
Current - Quiescent (Iq):	130µA
Current - Output:	300mA
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

The RT9198-18GJ5 is a high performance, ultra-high power linear voltage regulator IC (LDO) created by Richtek Technology Corporation. This linear voltage regulator IC is best used in applications where a small footprint, high current efficiency and low quiescent current is essential.

Features

The RT9198-18GJ5 has many features that make it an ideal voltage regulator for many applications. It has an ultra-high power efficiency of up to 94.4%, making it one of the most efficient linear voltage regulator ICs available, and it has a low quiescent current of 142 μA. It is also capable of providing a maximum output current of up to 800mA, making it suitable for high current applications, and the regulator is enclosed in an 8-pin package, making it great for applications where space is limited.

Application Field and Working Principle

The RT9198-18GJ5 is primarily used in mobile phones and other portable devices, as it is ideal for applications such as bias regulation and Li-ion battery chargers. It can also be used in a variety of other applications, such as power management systems and point-of-load regulation. The RT9198-18GJ5 is a voltage regulator IC which follows the basic principles of linear voltage regulation. The regulator takes a predetermined input voltage, and regulates the output voltage to a predetermined value by using an adjustable voltage divider. The voltage divider is adjusted by an internal control loop. The internal control loop monitors the output voltage and adjusts the voltage divider accordingly, so that the output voltage is maintained at the predetermined output voltage.

Conclusion

In conclusion, the RT9198-18GJ5 is a high performance, ultra-high power linear voltage regulator IC. It is ideal for applications such as mobile phones and other portable devices due to its high efficiency and low quiescent current, as well as its small footprint. Its adjustable voltage divider allows it to be used for both bias regulation and Li-ion battery chargers, as well as a variety of other applications.

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