RT9261-30GB

Voltage - Input (Max):	7V
Supplier Device Package:	SOT-23-5
Package / Case:	SC-74A, SOT-753
Mounting Type:	Surface Mount
Operating Temperature:	-20°C ~ 85°C (TA)
Synchronous Rectifier:	No
Frequency - Switching:	120kHz
Current - Output:	60mA (Switch)
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	3V
Series:	--
Voltage - Input (Min):	1V
Number of Outputs:	1
Output Type:	Fixed
Topology:	Boost
Output Configuration:	Positive
Function:	Step-Up
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Application Field and Working Principle of RT9261-30GB DC DC Switching Regulators

The RT9261-30GB is a highly efficient three-terminal adjustable switching power supply voltage regulator. It is a low-cost and low-noise power device with stability and high efficiency. This device is used for power-supply sequences and can provide operating voltages for various loads. It also features a self-protection mode for reliable current limiting.

Features

The RT9261-30GB features a robust design to provide stable and reliable performance with excellent efficient operation. It is equipped with an advanced voltage regulation system and an adjustable oscillator frequency up to 1MHz. It also has a built-in reverse current protection, thermal shutdown and overload protection, enabling it to operate safely and reliably. Furthermore, this device has built-in voltage and current measurement, overload and short-circuit protection, and low noise operation.

Applications

The RT9261-30GB is widely used in a variety of power supply applications. It can be used for voltage regulation, providing reliable and stable power to devices or systems. It is ideal for portable gadgets, such as laptops and tablets, as well as for consumer electronics, including sound systems, home theatres and car audio systems. This device is also suitable for charging batteries and powering mobile phones, digital cameras and other portable devices.

Working Principle

The RT9261-30GB is a switching regulator that uses a PulseWidth modulation (PWM) control scheme. This device consists of an inner feedback loop, an oscillator, an error amplifier, a PWM comparator, a power switch, and an output capacitor. In this device, the PWM comparator is responsible for comparing the reference voltage with the output voltage. If the output voltage is lower than the reference voltage, then the PWM comparator will trigger the power switch. This switch then turns on and off at a fixed frequency, effectively creating a Pulse Width Modulated (PWM) signal, which controls the output voltage.The output voltage is then regulated by an error amplifier, which compares the voltage set point with the feedback voltage of the output. If there is any difference between the two, then the error amplifier adjusts the pulse width until a balance is achieved. Finally, the output capacitor smoothes out the PWM signal, resulting in a stable regulated output voltage.

Conclusion

The RT9261-30GB is a highly efficient and reliable three-terminal adjustable switching power supply voltage regulator. It is a low-cost and low-noise power device with stability and high efficiency. This device is widely used in a variety of power supply applications, like portable gadgets, consumer electronics, battery charging, and mobile phones. Its operation is based on a PulseWidth modulation (PWM) control scheme, which involves an inner feedback loop, an oscillator, an error amplifier, a PWM comparator, a power switch, and an output capacitor. Therefore, the RT9261-30GB is an excellent choice for providing reliable and stable power to electronic devices.

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