MAX759EWE+

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MAX759EWE+ Application Field and Working Principle

MAX759EWE+ is a high-performance DC-DC, switch-mode power supply (SMPS) regulator from Maxim Integrated. It is categorized under PMIC - Voltage Regulators - DC DC Switching Regulators. This device comprises of all necessary components for SMPS regulation including adjustable frequency oscillator, multiple high-performance linear regulators, and a high-efficiency step-down converter.

The MAX759EWE+ offers an adjustable output current of up to 1.25A, as well as an adjustable output voltage of 1.2V with an accuracy of ±0.25%. It also comes with an adjustable supply voltage of up to 2.8V and includes a low-power enable input. The device has a built-in thermal protection and soft-start circuitry, allowing it to automatically power down the system if an excessive load or temperature is detected.

The main features of the MAX759EWE+ are its excellent efficiency of up to 95%, adjustable output current for better power control, low quiescent current for extended battery life, and low-noise operation. Additionally, it also has a wide input voltage range from 2.7V to 5.5V, as well as an adjustable switching frequency from 400kHz to 1.2MHz.

Application Field

The MAX759EWE+ is suitable for a wide range of applications, such as high-performance notebook computers, tablet computers, wireless and mobile devices, telecom equipment, and digital home applications. Additionally, it is also ideal for applications requiring low noise and high efficiency, such as displays, audio equipment, storage devices, and embedded systems.

Working Principle

The MAX759EWE+ is a synchronous-rectified, step-down switch-mode power supply regulator, meaning it uses a pulse-width-modulated (PWM) control method. It contains an integrated high-speed switch, which is responsible for converting the input voltage to the output voltage. During this process, the integrated switching frequency is adjustable between 400kHz and 1.2 MHz. This adjustment allows the power supply designer to optimize the efficiency and current requirements of the system.

To further enhance efficiency, the MAX759EWE+ includes several features, such as an adjustable switching frequency, a low quiescent current, an adjustable bias current, and an integrated overvoltage protection. Additionally, to extend battery life in its applications, the device features a low-power enable input and also includes a thermal protection circuit.

In summary, the MAX759EWE+ is a high-performance DC-DC switch-mode power regulator. It is suitable for a wide range of applications requiring high efficiency, low noise and low quiescent current. It has adjustable input voltage and output current options, as well as an integrated thermal protection and overvoltage protection for improved protection. Additionally, it has a wide switching frequency range, allowing for further optimization of the power system.

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