ST730ACDTR Integrated Circuits (ICs)

Voltage - Output (Min/Fixed):	5V
Base Part Number:	ST730A
Supplier Device Package:	8-SO
Package / Case:	8-SOIC (0.154", 3.90mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	0°C ~ 70°C (TJ)
Synchronous Rectifier:	No
Frequency - Switching:	160kHz ~ 280kHz
Current - Output:	450mA
Voltage - Output (Max):	--
Series:	--
Voltage - Input (Max):	11V
Voltage - Input (Min):	4V
Number of Outputs:	1
Output Type:	Fixed
Topology:	Buck
Output Configuration:	Positive
Function:	Step-Down
Part Status:	Obsolete
Packaging:	Tape & Reel (TR)

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ST730ACDTR Application Field and Working Principle

ST730ACDTR, a type of DC/DC switching regulator, is a low-cost, low-power converter solution for today’s mobile, battery-powered, and other power sensitive applications. The series offers ultra-low quiescent current (IQ) and fast input/output transient response performance. It is also equipped with short-circuit, thermal shutdown, and overvoltage protection.

Application Field

The ST730ACDTR series is suitable for various applications requiring low-power, low-voltage solutions, including mobile phones, tablets, laptops, digital cameras, and other battery-powered devices. It is also used in power adapters, distributing power supplies, industrial test and measurement applications, and other similar applications.

Working Principle

The ST730ACDTR series is a monolithic DC/DC high-efficiency switching regulator. It uses a constant-on-time (COT) control scheme to minimize the number of external components required for the design. This allows for a very small board size and a reduced power loss. The device is also designed with a high efficiency, allowing for lower overall power consumption.The ST730ACDTR series employs a synchronous-rectifying topology. This topology enables high efficiency and low switching losses. The series can reach up to 96% efficiency even at high power levels.The COT control scheme allows for a fast load transient response. This allows the regulator to quickly adjust to load changes and maintain a constant voltage output. In burst mode operation, the regulator keeps its frequency constant and improves the overall efficiency. The adjustable loop bandwidth helps in optimizing noise and transient response.The ST730ACDTR series has a wide input voltage range of 4.4V to 22V and an output voltage range of 0.8V to 7V. It can provide 3A or 6A of output current, depending on the input voltage. The device also has integrated soft start, overvoltage protection, and thermal shutdown.

Conclusion

The ST730ACDTR series is an ideal solution for applications that require low-power, low-voltage solutions. With its high efficiency and wide input/output voltage range, the ST730ACDTR series can provide an efficient and reliable power solution. The integrated protections and fast load transient response make the ST730ACDTR series a safe and reliable choice for related power applications.

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