RT2853ALGQW Integrated Circuits (ICs)

Series:	ACOT™
Packaging:	Tape & Reel (TR)
Part Status:	Discontinued at Digi-Key
Function:	Step-Down
Output Configuration:	Positive
Topology:	Buck
Output Type:	Adjustable
Number of Outputs:	1
Voltage - Input (Min):	4.5V
Voltage - Input (Max):	18V
Voltage - Output (Min/Fixed):	0.765V
Voltage - Output (Max):	7V
Current - Output:	3A
Frequency - Switching:	650kHz
Synchronous Rectifier:	Yes
Operating Temperature:	-40°C ~ 85°C (TA)
Mounting Type:	Surface Mount
Package / Case:	16-WFQFN Exposed Pad
Supplier Device Package:	16-WQFN (3x3)

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The RT2853ALGQW is a switching voltage regulator, which is in the family of DC/DC switching regulators for applications in the automotive field. It is used in systems needing a wide supply voltage range and high voltage conversion gain. It also includes on-chip control and safety features.The RT2853ALGQW is a step-down converter which supplies fixed output voltages of 3.3V, 5V, and 12V. It is composed of an inductor, capacitor, and a power switch. The power switch is used to step-down the input voltage to the desired output. An external control unit, or a P-channel MOSFET, is also used as the power switch. The control unit is needed to provide proper current control and power switch over-current protection.The working principle of the RT2853ALGQW is based on duty cycle control. This means that the duty cycle of the power switch is controlled by the external control unit. The duty cycle determines the amount of the output voltage that is dropped across the inductor and the input voltage that is applied to the output capacitor.When the power switch is on, energy is stored in the inductor and a voltage drop is created across the power switch. This voltage drop is equal to the input voltage minus the output voltage. When the power switch is turned off, the stored energy in the inductor is discharged into the output capacitor. The result is that the output voltage is equal to the input voltage minus the voltage drop.The RT2853ALGQW can provide high voltage conversion gains up to 90%. It is also capable of providing up to 4 A of output current. It has an operating temperature of -40 to +85°C and is suitable for both surface mount and through hole applications.The RT2853ALGQW is widely used in automotive applications for supplying power to different components such as airbags, lighting systems, and engine management. It is also used in various other applications such as industrial robots, portable medical devices, LCD displays, and motor control circuits.The RT2853ALGQW is a very robust device that provides excellent efficiency and reliability. It has an integrated over-current protection, on-chip temperature monitoring, and an under-voltage lockout. This makes it ideal for automotive, industrial, and other applications.

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