MAX741UCPP+

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The MAX741UCPP+ is an ultralow-noise and high-efficiency, zero-drift switched-capacitor step-up/inverting dc-dc regulator and T-coil driver. It is a member of the MAX741-series voltage and T-coil controllers offered by Maxim Integrated. This highly efficient device operates from an input voltage of only 1.1V and provides output voltages up to 15V. The device provides an ultralow quiescent current of only 30µA, making the MAX741UCPP+ an ideal choice for battery-powered applications that require long operating times. The device also features an adjustable switching frequency of up to 2MHz for enhanced efficiency and ultralow noise.The MAX741UCPP+ can be used in a variety of applications as a step-up/inverting/T-coil regulator, such as Li-ion battery chargers, portable medical devices, motor drives, and many others.

Application field:The MAX741UCPP+ is ideal for use in typical, low-voltage, step-up/inverting/T-coil dc-dc applications, including battery-powered systems, portable medical devices, and many others. It features an adjustable switching frequency of up to 2MHz that allows the user to optimize efficiency and minimize noise.

Working principle:The MAX741UCPP+ is an ultralow-noise, high-efficiency, zero-drift switched-capacitor step-up/inverting dc-dc regulator and T-coil driver. The device uses a switched-capacitor technique that eliminates the need for an inductor and enables the device to provide an efficient, high-current solution in a small package. The device has an ultralow quiescent current (30µA) and high peak efficiency (up to 96%) that make it ideal for energy-sensitive applications.The device allows the user to easily adjust the output voltage, as well as the switching frequency, simply by making a few resistor changes. It operates from an input voltage as low as 1.1V and provides output voltages up to 15V. It also features an output discharge control pin (ODC) that automatically discharges the output when the device is disabled.

In addition, the MAX741UCPP+ includes a thermal shutdown feature that protects the device from overheating. It also includes a minimum on-time (TON) control that limits the device\'s minimum switching frequency, and a frequency synchronization pin that synchronizes the internal oscillator to an external clock source.

The device also features a dedicated T-coil pin for driving T-coils for applications such as AC adapters. The T-coil pin can be used to generate a continuous waveform in applications that require a stable output voltage. In addition, the T-coil pin can also be used to generate a pulse waveform in applications that require a burst-mode operation.Overall, the MAX741UCPP+ is a highly efficient, ultralow-noise dc-dc switching controller that is ideal for a wide range of low-voltage step-up/inverting/T-coil applications including battery-powered systems, portable medical devices, and many others. It features an adjustable switching frequency of up to 2MHz, an ultralow quiescent current of only 30µA, and a peak efficiency of up to 96%. Additionally, it includes a thermal shutdown feature, a minimum on-time control, a frequency synchronization pin, and a dedicated T-coil pin for driving T-coils.

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