MAX759CWE+T

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The MAX759CWE+T is a fully integrated, step-down switching regulator with a maximum output voltage of 12V and a maximum output current of 11A. The MAX759CWE+T utilizes an external N-channel MOSFET and a current-mode Pulse Width Modulation (PWM) controller and is designed for cost-sensitive applications. The MAX759CWE+T is optimized for fast transient response, improved output accuracy and excellent PSRR, making it ideal for automotive, industrial and consumer applications.

Application Field and Working Principle

The use of DC-DC switching regulators is increasing year by year in the many industries. The MAX759CWE+T is a powerful DC-DC switching regulator and has been widely applied in automotive electronics, industrial, consumer electronics and other applications.

The MAX759CWE+T regulator is composed of a main PWM controller, soft start circuit, enable circuit, fault protection circuit and so on. The main PWM controller adopts an external N-channel MOSFET and a current-mode PWM operation. The PWM controller controls the external MOSFET and then regulates the load power supply voltage to a stable, fixed level.

The Soft Start circuit gradually increases the output voltage from 0V to the fixed voltage level. The Enable circuit can turnoff the internal circuits when the regulator is not in use and saves power. In addition, the Fault protection circuit can prevent the system from being damaged by certain overcurrent and overvoltage conditions.

Features

The MAX759CWE+T regulator has several different features and benefits. One notable feature is the improved output accuracy within ± 2% across the junction temperature range. This benefit is due to the current-mode PWM operation and the external N-channel MOSFET. Other features includes an adjustable output voltage with a range of 4V to 12V, an adjustable switching frequency of 150kHz to 500kHz, an adjustable soft start of 0.15ms to 10ms, a low shutdown current of 1uA, and a small 6-lead SOP package size.

Device Parameters

Some important parameters for the device includ the maximum output current of 11 A, the maximum output voltage of 12 V, the operating temperature range of -20 °C to +125 °C, and the junction temperature range of -55 °C to +150 °C.

Conclusion

The MAX759CWE+T regulator is a very attractive option for replacing linear regulators in many applications. It provides adjustable output voltage and switching frequency of with an improved accuracy at a lower cost compared to linear regulators. It also includes a fault protection circuit, allowing application designs to be more robust and reliable. With all of these benefits, the MAX759CWE+T is well suited for automotive, industrial and consumer applications.

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