BQ500412EVM-584

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The BQ500412EVM-584 is a member of a series of charge pumps, specifically designed for space limited applications. It is a compact and easy to use solution for providing current at higher voltages while keeping the size and cost minimal. As an evaluation and demonstration board and kit, it is capable of providing 5V output voltage from 2.7V to 5.2V input. It is also able to handle up to 2.5A continuous output in applications where battery or DC/DC input limitation is not an issue.

The BQ500412EVM-584\'s main application is in consumer battery-powered, handheld devices. It is a reliable, cost effective solution for applications where space and cost considerations are critical. Much of its appeal lies in its ability to provide high efficiency at very low supply voltages. It is also designed to be robust and able to survive harsh environments. In addition, power cycling leaves it largely undamaged.

The BQ500412EVM-584 works by using an N-channel, depletion mode MOSFET to create a step up effect. The device requires only a few components, which minimizes external components and board space. In operation, VIN is the input voltage, which is regulated by the gate voltage of the MOSFET. The internal loop will adjust the gate voltage to reduce VIN to a safe operating level, preventing destruction of the device. The output voltage is adjustable from 2.7 to 5.2 V, and the current is limited to 2.5 A.

The BQ500412EVM-584 also has a few features designed to optimize the battery life of devices where it is installed. The most significant of these is cycle-by-cycle current limit, which prevents high currents from being delivered if the battery is nearly depleted. Additionally, the device is protected against reverse charging, so it can be used in applications where there is a possibility of negative battery voltages. Furthermore, it has a low-power, sleep mode that can be enabled when the device is not in use.

Overall, the BQ500412EVM-584 is an ideal solution for applications where space and cost constraints are of concern. Its charge pump technology allows it to provide decent power conversion efficiency in a small package, and its extra features extend battery life even when used in demanding conditions. Its versatile input voltage range is also quite helpful as it addresses a range of usage scenarios.

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