MAX17120ETJ+T

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The MAX17120ETJ+T is a small, synchronous, step-down voltage converter from Maxim Integrated, designed for battery-powered microcontroller-based systems. It features an ultra-small QFN package that is ideal for applications where board space is a premium. The device primarily optimizes battery life in portable applications, such as Bluetooth Low Energy (BLE), IoT, cellular telematics, wearables, and other battery-powered embedded systems.

The MAX17120ETJ+T integrated circuit (IC) provides programmable current-limit protection and has separate control of both input and output power stages to enable optimal configuration of the power conversion system. This IC can be used in parallel with a microcontroller or other digital processor to provide system power management in applications where power efficiency and time-to-market are of critical importance.

MAX17120ETJ+T Application Field

The MAX17120ETJ+T voltage regulator can be used in a variety of applications, including battery-powered personal computers, PDAs, cell phones, digital cameras, and other portable equipment. In portable applications, the MAX17120ETJ+T can provide power conversion within the power demands of the system, minimizing total system power consumption and increasing battery life. Additionally, the IC can be used in systems where efficient power conversion is critical such as those requiring quick time-to-market and fast prototyping.

The MAX17120ETJ+T can also be used in automotive and non-automotive applications such as automotive infotainment systems, battery-backed industrial control systems, and smart homes. Additionally, the IC provides an economical solution for multiplying/inverting low-voltage and low-current signals in noisy environments. In these applications, the IC converts the signal power from the source voltage to the regulated voltage for the application.

MAX17120ETJ+T Working Principle

The MAX17120ETJ+T works on the synchronous, step-down conversion principle. This includes a power-control circuit, voltage references, and a high-side FET switch. The control circuit turns on the switch and the feedback loop monitors the output voltage while the current is flowing. Once the desired voltage is reached, the feedback loop turns off the switch. This system allows for very efficient power conversion, minimizing power dissipation, and ensuring optimal system performance.

The IC constantly monitors both the input voltage and the output voltage and keeps them at the desired levels while maintaining an optimum degree of efficiency. The control circuit also regulates the current at the output to the desired level, thereby limiting any additional power dissipation. Additionally, the IC can be programmed with a voltage alarm so that it can alert the user when the output voltage is too low or too high.

The MAX17120ETJ+T also features a thermal shutdown circuit to protect against any excessive temperatures. This feature ensures that the device operates safely and provides robust system performance in challenging environments. Additionally, the IC can be configured to operate within a wide input range, from 4.5 V to 27 V.

Overall, the MAX17120ETJ+T provides an efficient and cost-effective solution for powering portable devices. Its features such as low noise, low ripple, and current-limit protection make it ideal for system power management in applications where power efficiency and time-to-market are of critical importance.

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