RT8298ZQW

Voltage - Input (Max):	24V
Supplier Device Package:	14-WDFN (4x3)
Package / Case:	14-WFDFN Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C (TA)
Synchronous Rectifier:	No
Frequency - Switching:	600kHz
Current - Output:	6A
Voltage - Output (Max):	15V
Voltage - Output (Min/Fixed):	0.8V
Series:	--
Voltage - Input (Min):	4.5V
Number of Outputs:	1
Output Type:	Adjustable
Topology:	Buck
Output Configuration:	Positive
Function:	Step-Down
Part Status:	Active
Packaging:	Tape & Reel (TR)

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RT8298ZQW application field and working principle

PMIC (Power Management Integrated Circuits) are used in different electronic devices, such as smart phones, tablets,etc. One of the important components of these devices is voltage regulators, in particular the DC DC Switching Regulators. The RT8298ZQW is one of the popular voltage regulators that is used in many electronic devices. The RT8298ZQW is a DC/DC voltage regulator with adjustable output current, output voltage and power factor correction. It is a 3-terminal DC/DC converter with regulated output current. The output current is adjustable from 150mA to 500mA by connecting a resistor to the RT8298ZQW’s current-sense pin.The RT8298ZQW is used in various applications such as computer peripheral circuits, LCD backlight circuits, and bias supplies. It has a wide output voltage range from 0.8V to 6V. The output voltage is adjustable through a single resistor divider or using an external reference voltage. The RT8298ZQW also has a power factor correction (PFC) function for improving the system’s power efficiency. The RT8298ZQW is designed to operate in either step-up or step-down modes. In step-up mode of operation, the RT8298ZQW accepts an input voltage and steps it up to a higher regulated output voltage. In step-down mode, it accepts a higher input voltage and steps it down to a lower regulated output voltage. The input voltage should be at least 0.7V higher than the output voltage for the device to operate properly.The switching frequency of the RT8298ZQW is adjustable through a resistive divider connected to the PFC pin. The frequency can be adjusted from 200KHz to 1.2MHz. The RT8298ZQW also has an internal soft start circuit, which helps to minimize the inrush current during power up.The RT8298ZQW has an integrated internal high side MOSFET and low side MOSFET for the power conversion. It also has an integrated linear regulator for providing a stable reference voltage for the output voltage setting. The internal MOSFETs are designed to have low on-state resistance (RDS(ON)) values, which helps to reduce the power losses.The RT8298ZQW has multiple protection features such as input under-voltage lockout, input over-voltage protection, output over-voltage protection and thermal protection. The input under-voltage lockout prevents the device from operating if the input voltage is too low. The input over-voltage protection prevents the device from entering the power-on state if the input voltage is too high. The RT8298ZQW also has an output over-voltage protection to prevent the output voltage from exceeding the absolute maximum ratings. The device also has a thermal protection feature which shuts down the device if the temperature exceeds a certain threshold.The RT8298ZQW is a regulator with high performance, reliability and flexibility. It is suitable for various applications including computer peripheral circuits, LCD backlight circuits, and bias supplies. The device also has a wide input and output voltage range, low quiescent current and high output current with adjustable frequency and power factor correction. The multiple protection features make it a reliable device for a variety of applications. In summary, the RT8298ZQW is an efficient, low quiescent current, high output voltage regulator that is used in many electronic devices. It is designed to operate in either step-up or step-down modes and has multiple protection features including input under-voltage lockout, input over-voltage protection, output over-voltage protection and thermal protection. The adjustable switching frequency and power factor correction make the RT8298ZQW a reliable, high performance voltage regulator for a variety of applications.

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