MAX744ACPA+

Voltage - Output (Min/Fixed):	5V
Base Part Number:	MAX744
Supplier Device Package:	8-PDIP
Package / Case:	8-DIP (0.300", 7.62mm)
Mounting Type:	Through Hole
Operating Temperature:	0°C ~ 70°C (TA)
Synchronous Rectifier:	No
Frequency - Switching:	185kHz
Current - Output:	500mA
Voltage - Output (Max):	--
Series:	--
Voltage - Input (Max):	16V
Voltage - Input (Min):	6V
Number of Outputs:	1
Output Type:	Fixed
Topology:	Buck
Output Configuration:	Positive
Function:	Step-Down
Part Status:	Active
Packaging:	Tube

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MAX744ACPA+

The MAX744ACPA+ is a high-performance, switched-mode power supply (SMPS) integrated circuit from Maxim Integrated that provides direct current (DC) conversion of voltages. It offers high efficiency, low components, and broad input-voltage range, making it an ideal choice for a wide range of applications such as high-efficiency server/workstation power supplies, mobile device battery charging, and robust automotive power systems.

Application field

The MAX744ACPA+ is designed for powering microprocessors and other high-power integrated circuits, as well as power supplies in consumer electronic products. It finds its application in PC notebook systems, telecommunications, and base station applications. Additionally, the MAX744ACPA+ can be utilized in point-of-load (POL) solutions for powering such devices as Ethernet switches, central office routers, and wireless base stations.The MAX744ACPA+ is an ideal solution for multi-purpose and/or field-programmable gate arrays (FPGAs), ASICs and DSPs. Some of its features include: ability to handle two separate output voltages; wide input voltage range; high efficiency; Pulse width modulation control; and a fault reset signal. All of these features make it suitable for high-power, high-voltage, and high-current applications.

Working principle

The MAX744ACPA+ is designed to provide efficient and reliable DC conversion of voltages. It achieves this through a combination of synchronous rectification and pulse width modulation (PWM) techniques. The integrated circuit contains four switching stages, which include an input stage, two buck converters, and a DC-to-DC switching regulator.In the input stage, an inductor or transformer creates a voltage bridge, which is supplied to the input of the switching regulator. The input stage generates an AC voltage, which is then converted to a DC voltage.The two buck converters are triggered by the PWM signal generated by the regulator. The switching frequency of the PWM signal controls the amount of current delivered to the load. The two buck converters rectify the PWM signal, providing a regulated DC output voltage.Finally, the DC-to-DC switching regulator modulates the voltage output of the buck converters to maintain a constant output voltage. The frequency of the regulator is adjusted by an internal oscillator or an external clock. The switching frequency of the PWM signal is determined by the frequency of the oscillator and the DC voltage output is regulated by comparisons of the feedback voltage to the reference voltage.

Conclusion

The MAX744ACPA+ is a high-performance, integrated circuit from Maxim Integrated that provides efficient and reliable direct current (DC) conversion of voltages. It features a wide input voltage range, high efficiency, Pulse width modulation control, and a fault reset signal, making it suitable for high-power, high-voltage, and high-current applications. The integrated circuit contains four stages, including an input stage, two buck converters, and a DC-to-DC switching regulator, which collectively serve to convert an AC voltage to a regulated DC voltage. The MAX744ACPA+ is designed for powering microprocessors, ASICs, and FPGAs, as well as power supplies in consumer electronic products.

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