RT5789BGQUF

Series:	*
Packaging:	Tape & Reel (TR)
Part Status:	Active
Mounting Type:	Surface Mount
Package / Case:	8-UDFN
Supplier Device Package:	8-UDFN (FC) (2.5x2)

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RT5789BGQUF - DC DC Switching Regulators

RT5789BGQUF is a integrated voltage regulator, with two DC/DC switching regulators, an I2C-compactable up to 10A, an LCD backlight power supply, and an internal low distortion anti-emi filter. It is used widely in the field of power management or integrated in touchscreen or other high-end consumer electronics and LCD displays with limited space.

Features:

• Wide input voltage range: 2.3V to 7V
• Output voltage: adjustable from 0.6V to 5.0V
• MPPT/buck-boost topology maintained
• Low noise, EMI & ripple
• High precision& accuracy of output voltage
• Output current up to 10A
• Built-in over-voltage, over-current and thermal protection
• High efficiency up to 95%
• Smaller footprint and setting of up to 8 components

Applications:

The RT5789BGQUF is a powerful voltage regulator suitable for a wide range of applications such as LCD backlight power supply, over voltage protection, AC/DC power conversion and LED lighting control.

• Mobile phones,touchscreens and other consumer electronics
• Automotive and battery powered systems
• Electronic householde appliances
• Computers and peripherals
• Industrial and medical instruments
• Portable battery-powered devices

Working Principle:

The RT5789BGQUF’s DC/DC switching regulator consists of four main components: an inductor, a switch, a diode, and a capacitor. The regulator works by controlling the connection of the inductor and switch together, in such a way, that the power from the voltage source is regulated. To regulate the voltage, the controller first determines the required output voltage. The controller then determines the duty cycle of the switch, which decides the amount of power to be delivered to the load. The duty cycle is controlled by width modulation. The switch is connected with the inductor and generates a magnetic field with the current passing through it. This causes the inductor to store energy in the form of the magnetic field. When the switch is opened, the energy stored in the magnetic field is released, allowing a current to flow through the diode and across the capacitor. The DC/DC switching regulators control the output voltage by controlling the duty cycle of the switch. Increasing the duty cycle further applies a greater voltage to the switched inductor, resulting in a higher output voltage. Conversely, reducing the duty cycle reduces the output voltage. The diode prevents the current from flowing back to the source. This circuit offers several advantages over linear voltage regulators, such as increased efficiency, reduced heat generated and lower power requirements. Furthermore, the RT5789BGQUF\'s built-in I2C-compactable makes it easy to control the regulator and integrate it into applications. Overall, the RT5789BGQUF is an excellent DCDC switching regulators to use in a wide range of applications, especially in the field of power management and integrated LCD displays. It offers high efficiency, low noise and EMI, and stable output voltage.

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