MAX772ESA

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The MAX772ESA is a dual-channel step-down, high-efficiency DC-DC switch controller designed for use in power management systems. The device, which combines two channels to create an easy-to-use integrated solution, is an ideal choice for any application requiring high efficiency, low quiescent current, and low noise operation. The MAX772ESA also features integrated over-temperature, under-voltage, and overvoltage protection, making it suitable for applications that require robust power management.

The MAX772ESA features a dual-channel configuration that provides up to 5.5V output voltage and up to 2A output current. The device also includes an internal high-voltage start-up circuit that allows the device to start at an input voltage of up to 20V. The MAX772ESA is also designed with a adjustable soft-start circuit to help reduce current draw during start-up and enable smooth system start-up.

The MAX772ESA provides excellent efficiency performance with low output voltage ripple and fast transient response. The device also offers low quiescent current, eliminating the need for a large, inefficient external power supply. The device also incorporates dual supply outputs for improved system reliability. Finally, the MAX772ESA provides integrated over-temperature, under-voltage and overvoltage protection. This makes the MAX772ESA an ideal choice for applications that require robust power management.

The MAX772ESA works by converting an input voltage into a regulated output voltage using a high-efficiency buck converter operating in pulse-width modulation (PWM) or pulse-frequency modulation (PFM) mode. The device consists of two N-channel power MOSFETs and two low-frequency oscillator (LFO) controller blocks that divide the switching time up into two independent switching cells. The LFO is used to control the pulse-width modulation by using a fixed frequency, which is generated by the internal PWM clock. The PWM clock controls the on-times of both the upper and lower power MOSFETs in the MAX772ESA, providing an accurate output voltage regulation.

The MAX772ESA also offers protection against various conditions, including over temperature, over voltage and under voltage. The device\'s protection functions are enabled through a simple set of configurable overvoltage/undervoltage thresholds and a programmable soft-start timer. By integrating these protection features, the MAX772ESA provides reliable and robust system protection.

Overall, the MAX772ESA is an ideal choice for portable applications that require high efficiency, low quiescent current, and low noise operation. The device\'s dual-channel configuration, integrated protection features and adjustable soft-start circuit make it suitable for any application where robust power management is required. Furthermore, the device\'s high-voltage start-up and adjustable PWM/PFM frequency ensure excellent efficiency performance.

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