MAX665CWE+

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MAX665CWE+ is a robust DC-DC switching regulator designed for a wide range of voltage conditioning applications. It is a monolithic, high-frequency, synchronous buck regulator that operates from a 5V input supply and offers high efficiency and fast transient response. With integrated power MOSFETs and integrated low resistance current sensing resistors, the MAX665CWE+ is well suited for applications that require tight regulation of output voltage or current. In addition, this device also provides protection features such as over current protection, output short circuit protection and under voltage lockout.

This is an ideal choice for powering various kinds of digital integrated circuits such as processors, ASICs, microcontrollers, and FPGAs, as well as other digital loads like SRAM, DRAM and Flash. It is also suitable for powering audio/video systems and devices such as LED lighting, displays, and cameras. With its current mode control, fast transient response and minimal external component count, the MAX665CWE+ is capable of providing clean and stable output power for a variety of applications.

Application Field of MAX665CWE+

The MAX665CWE+ is an ideal regulation solution for consumer electronics, automotive and industrial applications. In consumer electronics, it can be used to provide a reliable power solution for portable electronic devices, such as smart phones, tablets, and digital cameras. It is also suitable for powering audio/video systems and devices such as LED lighting, displays and TVs. Additionally, it can be used for powering FPGA and ASICs in industrial and automotive applications. In automotive applications, it can be used to provide power supply for security, electric control, and digital displays.

Working Principle of MAX665CWE+

The MAX665CWE+ operates in a fast-switching, current-mode or voltage-mode control topology. It includes an internal high-side switch, an integrated low-side switch, an error amplifier, a simple frequency compensation circuit, an under-voltage lockout circuit, and a few external components. In current-mode control, the voltage of the feedback loop is compared to a fixed reference voltage and the output is regulated by keeping the voltage at a set level. In voltage-mode control, the voltage drop across the MOSFET switch is monitored and the output voltage is regulated by monitoring the voltage drop. This is done by controlling the pulse-width modulated (PWM) signal generated by the internal oscillator.

When the MAX665CWE+ is on and the output voltage drops below its average level, the internal pulse-width modulated (PWM) signal is driven high and the charge pump is activated. This causes the external MOSFETs to switch rapidly, allowing current to flow through the inductor and provide the required output voltage. When the MAX665CWE+ is off, the PWM signal is driven low and the current flow through the inductor is stopped. The charge pump is also disabled and the output voltage is restored back to its average level.

The MAX665CWE+ also includes a number of safety features, such as over current protection, output short circuit protection, and under voltage lockout. This provides added protection to the system in case of faults. The device also includes an adjustable soft-stop feature which ensures that the MOSFET is safely and quickly turned off when the device is powered down.

Conclusion

The MAX665CWE+ is a robust DC-DC switching regulator designed for a wide range of voltage conditioning applications. It provides high efficiency and fast transient response, with integrated power MOSFETs and integrated current sensing resistors. The device is well suited for applications that require tight regulation of output voltage or current, and offers protection features such as overcurrent protection, output short circuit protection, and under voltage lockout. Its current mode control and fast transient response make it a good fit for powering digital integrated circuits such as processors, ASICs, microcontrollers, and FPGAs, as well as other digital loads like SRAM, DRAM and Flash. This makes the MAX665CWE+ an ideal solution for various kinds of consumer electronics, automotive, and industrial applications.

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