NB669GQ-P

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PMIC, or Power Management Integrated Circuit, is an electronic device capable of regulating and managing power for electronic devices. The NB669GQ-P is a linear and switching voltage regulator that functions as a PMIC. This device offers the flexibility to regulate current and empower the device from a wide input voltage range, within a variety of microcontroller applications.

The NB669GQ-P is a low cost, low power PMIC with excellent transient response times and competitive quiescent current levels. It enables the power management of multiple power supplies, with a comprehensive array of features such as high current, low on-resistance drivers and low-dropout precision voltage references, in addition to its ability to provide high EMI immunity and robust protection features.

The device features a wide and adjustable operating range of 0.9V to 7V and is capable of providing up to 1.5A of current. TheNB669GQ-P also contains a low-side switching driver, which is capable of a pull-up current up to 200mA, ideal for system needs requiring small size or high control power.

The NB669GQ-P is protected from in-circuit overcurrents with its thermal protection feature. The over-current and thermal protection features aids in maximizing system reliability and preventing against system malfunctions and damages.

The NB669GQ-P works according to a linear regulator, on one hand, and a switching regulator, on the other. Linear regulators work according to the following equation:

Vo = Vref X (1 + R2/R1)

In this equation, Vo represents the output voltage of the device and Vref represents the reference voltage, while R2 and R1 represent the ratio of the resistors connected to the device. When power is applied to the linear regulator, an internal voltage reference feeds a voltage division network of resistors, R1 and R2. A current difference appears between these resistors, resulting in a voltage difference across the R2 resistor in accordance with Ohm\'s Law. This sampled voltage is fed to one of the inputs of the error amplifier and compared to the reference voltage.

Switching regulators, on the other hand, use a control circuit to power a switching element, either a transistor, a MOSFET, or an Integrated Circuit. This control circuit consists of an error amplifier, which compares the output voltage to a reference voltage and modulates the switch\'s on-off cycle in response to this difference. When the switch is on, a large current is supplied to an inductor, which stores energy. This energy is released to the load when the switch is turned off.

The NB669GQ-P has been specifically designed to offer a multiple power supply management and features a high EMI immunity, in addition to its low power consumption. This device also is outfitted with other features such as low on-resistance drivers and low-Dropout precision voltage references. The combination of output current, low quiescent current, and ultralow dropout voltage makes this device suitable for a variety of microcontroller applications. With its low cost and excellent linear and switching regulator capabilities, theNB669GQ-P is perfect if you’re looking for a versatile and reliable PMIC.

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