NCV8851BDBR2G

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NCV8851BDBR2G is an advanced voltage regulator from ON Semiconductor. It is designed for battery-operated applications that require high accuracy and good current regulation.

Application Field

NCV8851BDBR2G has wide application field. It is ideally suited for applications like smartphones, tablets and similar portable devices. It can also be used in industrial and consumer electronics, medical systems, and automotive.

In smartphone and tablet applications, NCV8851BDBR2G increases system reliability with active cell balancing and advanced over-voltage protection. It is compatible with the battery management systems (BMS) used in modern mobile devices to protect them from battery over-voltage conditions during charging or discharging.

The device also features capacitor scavenging, which can help reduce audible noise and excess capacitance in portable applications. This provides better system performance, longer battery life and less heat generation.

In industrial and consumer electronics, NCV8851BDBR2G provides active cell balancing, reverse current protection and over-voltage protection. This helps keep the device running safely and reliably, even during times of high power draw or high temperatures.

Working Principle

The NCV8851BDBR2G is a linear and switching regulator designed to facilitate the battery management of consumer and industrial electronics. It is capable of providing up to 4A of continuous current with a dropout voltage of 250 mV or less. The device offers a wide input voltage range, so it can operate with either 1-cell or 2-cell lithium-ion batteries.

The device offers a wide range of features to protect the battery, such as over-current protection, over-temperature protection and over-voltage protection. The over-current protection is set by a precision trimmed resistor network and the over-voltage protection is provided by the integrated NCP8857P protection IC.

The switching regulator in the device is designed to provide a very high efficiency of over 90%, and it has the ability to regulate the output voltage with a precision tolerance of ±1.5%. The low-power sleep mode reduces current consumption to minimize overall power usage.

The device also offers cell balancing, which can help extend the life of the battery by ensuring that all of the cells are at the same voltage. The balancer comes with a resistor network to provide precise balancing of each cell over the full charge and discharge cycle.

The NCV8851BDBR2G is suitable for use in a variety of applications, including portable electronic devices, industrial electronics and automotive applications. It is available in a 4 x 8 mm QFN package.

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