Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Output Configuration:	Positive
Output Type:	Fixed
Number of Regulators:	2
Voltage - Input (Max):	5.5V
Voltage - Output (Min/Fixed):	1.2V, 1.3V
Voltage - Output (Max):	--
Voltage Dropout (Max):	0.33V @ 300mA, 0.33V @ 300mA
Current - Output:	300mA, 300mA
Current - Quiescent (Iq):	80µA
PSRR:	70dB ~ 38dB (100Hz ~ 300kHz)
Control Features:	Enable
Protection Features:	Over Current, Over Temperature, Short Circuit
Operating Temperature:	-40°C ~ 85°C
Mounting Type:	Surface Mount
Package / Case:	SOT-23-6 Thin, TSOT-23-6
Supplier Device Package:	TSOT-23-6

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RT9011-CBGJ6 Application Field and Working Principle

Introduction

RT9011-CBGJ6 is a low drop-out (LDO) voltage regulator, developed by Richtek Technology Corporation as part of its RT9011 family of voltage regulators. The chip is built with CMOS technology and is capable of providing a stable output voltage ranging from +1.8V to +6V. It provides up to 50mA of output current, which makes it suitable for a wide range of applications ranging from small battery-powered equipment, notebook computers, and digital cameras to power supplies. The RT9011-CBGJ6 also boasts a very low drop-out voltage, making it ideal for applications which require efficient power regulation.

Application Fields

RT9011-CBGJ6 is a low drop-out (LDO) voltage regulator that meets the requirements for efficient performance required in a variety of applications, ranging from small battery-powered equipment, notebooks, digital cameras, and power supplies. RT9011-CBGJ6 provides stable voltage from +1.8V up to +6V, with a maximum output current of 50mA, making it suitable for a wide range of applications. With its low drop-out voltage and wide input voltage range, RT9011-CBGJ6 is suitable for use in digital circuits, such as CPUs, ASICs and FPGAs. It is also ideal for powering LED lighting applications, providing a constant and reliable output voltage with low input voltage ripple.

Working Principle

The RT9011-CBGJ6 is equipped with a linear adjustable voltage regulator circuit. This circuit uses a bandgap reference to create a reference voltage that sets the output voltage. The bandgap reference is connected to an internal regulator circuit, which regulates the output voltage according to the input voltage and the reference voltage. When the input voltage increases, the reference voltage is shifted to higher voltage which in turn passes through the current sensing circuit and increases the output voltage. Similarly, when the input voltage decreases, the reference voltage is shifted to lower voltage, which reduces the output voltage accordingly.The RT9011-CBGJ6 offers two modes for controlling the output voltage: fixed and adjustable. In fixed mode, the chip is provided with a voltage preset resistor, which is adjusted by the user depending upon the desired output voltage. In adjustable mode, the output voltage is adjusted by using an external resistor and capacitor network.

Conclusion

The RT9011-CBGJ6 is a low drop-out (LDO) voltage regulator, which is suitable for a wide range of applications requiring efficient power regulation. It is equipped with a linear adjustable voltage regulator circuit, which offers two modes for controlling the output voltage: fixed and adjustable. With its low drop-out voltage and wide input voltage range, the chip is ideal for powering digital circuits, such as CPUs, and LED lighting applications.

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