MCP73831T-4ADI/MC

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With the development of technology, power and energy management integrated circuits (PMIC) has become a handy and useful tool. One of the few PMICs is the Linear Technology MCP73831T-4ADI/MC, which is mainly used for battery charging. It is a low power, cost effective, pulse width modulating battery charge management device for single cell Li-Ion and Li-polymer battery systems.

The MCP73831T-4ADI/MC is mainly designed to operate in low voltage and low power applications like cell phones, tablets, and other portable devices. It is a stand-alone charge controller certified by the USB-IF (Universal Serial Bus Implementers Forum) that provides USB port battery charging. It can also be used with 4-cell and 6-cell battery packs.

The MCP73831T-4ADI/MC can provide constant charge rates up to 500 mA with a temperature range of -40°C to +85°C. It is powered by a 1.5V to 5.5V DC input voltage, which is efficient and energy saving. Moreover, its features integrated over-voltage and short-circuit protection to ensure the safety of the device and its users.

The MCP73831T-4ADI/MC includes a buck-boost converter to regulate the output voltage and current, which helps in maintaining the battery voltage. It also features an internal charging state machine that provides constant battery charge. It has two charging modes: Constant Voltage/Constant Current (CV/CC) mode and Pre-conditioning mode. In CV/CC mode, the MCP73831T-4ADI/MC continuously measures the battery temperature and adjusts the charge current signature to ensure that the console reached a desired voltage level. In Pre-conditioning mode, the MCP73831T-4ADI/MC provides periodic constant current pulses to batched cell packs to ensure that the cells will accept a higher charging rate.

The MCP73831T-4ADI/MC has four additional features that make it a great choice for battery charging applications. The first is its automatic charge status output, which provides an end-of-charge alert. The second is its protection against overcharging, over-discharging and short circuits. It also integrates regulated charge temperature and overvoltage protection. Finally, its sleep mode helps conserve energy when the device is not in use.

In addition, the MCP73831T-4ADI/MC comes with a self-extinguishing thermistor, which helps ensure that the batteries remain cool. This feature helps to protect the battery from going into thermal runaway or overcharging. It also includes a battery cutoff voltage, which disconnects the battery from the power source when the charge cycle is complete.  

The MCP73831T-4ADI/MC is a versatile device that can be used in many different battery charging applications. It is a cost-effective solution for low-power applications such as cell phones, tablets, and other portable devices. Also, its highly efficient design helps to reduce the amount of energy consumed by the device.

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