MAX1763EEE+T

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MAX1763EEE+T voltage regulator is a high performance DC-DC step down switch mode power supply IC that provides an efficient, low cost, and highly integrated solution for a wide range of power applications. The device includes a low power comparator, voltage reference, voltage divider, PWM timer, and a MOSFET power switch.The MAX1763EEE+T integrates a synchronous buck controller, PWM programmable oscillator, feedback amplifier, and synchronous rectifier into a single package. The boost converter is operated in constant frequency mode, with the voltage feedback supplied through an external voltage sense resistor.

The MAX1763EEE+T is designed to provide low-cost and efficient power supplies for consumer and portable applications. The device is well suited for powering notebook and laptop computers, consumer electronics,and portable handheld products. The device is capable of efficiently converting a wide input voltage range of 4.5V to 24V down to a regulated output voltage range of 0.9V to VIN.The integrated PWM control loop allows for easy customization and quick transient response. The device features an adjustable switching frequency, allowing for design optimization of EMI and power supply size.

The operating principle of MAX1763EEE+T relies on deriving power from an input source, such as a battery or wall plug. The device is capable of drawing power from a wide range of inputs, including single and dual supply configurations.The Maximum power available to the load is limited by the input voltage V IN of the device.When the input voltage is above the desired output voltage, the buck converter starts to operate, by connecting the drain of the power MOSFET to the source through a series of pulses.

The PWM oscillator, also referred to as the control circuit, generatesSquare waveforms which determine the duty cycle and switching frequency of the power stage. The duty cycle of the device is adjusted to achieve the desired output voltage level by the voltage feedback loop.The voltage feedback contains a voltage divider, comparator and operational amplifier.The comparator compares the output voltage to the internal reference voltage, generating an error signal which is amplified by the operational amplifier. The voltage feedback loop adjusts the duty cycle of the PWM oscillator until the desired output is achieved. The synchronization pin can be used to synchronize the PWM oscillator with an external clock. The MAX1763EEE+T also features a low-power enable pin that can be used to disable the device, reducing the quiescent current consumption.

The MAX1763EEE+T is an ideal solution for products that require an efficient, low cost and highly integrated power-supply solution.The device is well suited for powering notebook and laptop computers, consumer electronics, and portable handheld products.The device is capable of efficiently converting a wide input voltage range of 4.5V to 24V down to a regulated output voltage range of 0.9V to VIN. The adjustable switching frequency allows for an easy design optimization of EMI and power supply size. The integrated PWM control loop allows for easy customization and quick transient response, providing the designer with an intuitive and consistent operation.

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