RT7297BHZSP

Voltage - Input (Max):	18V
Supplier Device Package:	8-SOP-EP
Package / Case:	8-SOIC (0.154", 3.90mm Width) Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C (TA)
Synchronous Rectifier:	Yes
Frequency - Switching:	1.2MHz
Current - Output:	3A
Voltage - Output (Max):	12V
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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Introduction to RT7297BHZSP Application Field and Working Principle

The RT7297BHZSP is a synchronous DC-DC step-down switching regulator with a built-in high-side and low-side MOSFET. It is capable of providing up to 3A continuous output current with excellent line and load regulation. The switching frequency is adjustable to allow for accommodating the requirement of different application scenarios. It also integrates over-voltage protection, current limit protection and soft start capability to ensure safe and reliable power conversion. The RT7297BHZSP is particularly suited for space-constrained applications such as VGA cards, slim notebooks, and tablet PCs.

Overview of RT7297BHZSP

The RT7297BHZSP is a DC-DC step-down switching regulator that can provide up to 3A of continuous output current. The unique device integrates internal high-side and low-side MOSFETs to reduce the cost and complexity of board layout. The switching frequency is adjustable and supports 200kHz to 1MHz range, which allows it to support multiple application scenarios. It also integrates over-voltage protection, current limit protection and soft start. The RT7297BHZSP is available in a QFN-24 package.

Features of RT7297BHZSP

The RT7297BHZSP offers a range of features such as:

• Integrated high-side and low-side MOSFETs.
• Up to 3A continuous output current.
• Adjustable switching frequency that supports 200kHz to 1MHz range.
• Accurate output current limit protection.
• Programmable over-voltage protection and soft start capability.
• Available in a QFN-24 package.

Applications of RT7297BHZSP

The RT7297BHZSP is well suited for numerous power-intensive applications. It is particularly used in space-constrained applications such as VGA cards, slim notebooks, and tablet PCs. It can also be used in applications such as USB PD 3.0, Motherboards and HDDs, as well as 5V or lower applications.

Working Principle of RT7297BHZSP

The RT7297BHZSP is a synchronous DC-DC step down switching regulator with an internal high-side and low-side MOSFET and operates at an adjustable switching frequency of 200kHz to 1MHz.When the device is activated, the integrated high-side MOSFET turns on and the current output is increased to the required level. This increase in current causes the voltage across the inductor to increase and the current flow into the feedback pin. Once the voltage at the feedback pin reaches the target reference voltage, the device is turned off and the integrated low-side MOSFET turns on. This drops the input voltage and the voltage across the inductor to reduce the current output. The cycle then repeats itself. With the over-voltage protection and current limit protection, the RT7297BHZSP can ensure stable, reliable and efficient power conversion. Additionally, the adjustable switching frequency allows the device to accommodate different application scenarios for best efficiency.

Conclusion

The RT7297BHZSP is a synchronous DC-DC step-down switching regulator with a built-in high-side and low-side MOSFET. It is capable of providing up to 3A continuous output current with excellent line and load regulation. The switching frequency is adjustable to allow for accommodating the requirement of different application scenarios. It also integrates over-voltage protection, current limit protection and soft start capability to ensure safe and reliable power conversion. The RT7297BHZSP is particularly suited for space-constrained applications such as VGA cards, slim notebooks, and tablet PCs. With the multiple features and flexible design, the RT7297BHZSP is an ideal choice for a wide range of power applications.

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