NCP6336FCCT1G

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NCP6336FCCT1G is a synchronous step-down DC/DC switching regulator solution with integrated FET. It is designed to operate with standard ceramic output capacitors while delivering excellent transient response. NCP6336FCCT1G can be used in applications such as portable computers, handheld terminals, digital cameras, digital video cameras, gaming systems, LCD TVs, and general purpose. This device is part of the PMIC (power management integrated circuits). It is classified as voltage regulators and DC DC switching regulators.

The NCP6336FCCT1G device is optimized as a replacement or upgrade to traditional buck switching regulator architectures and can provide excellent power efficiency over a wide input range, from 4.5V to 18V. The switching frequency of this device can be adjusted from 200 kHz – 1.2 MHz and can be synchronized up to about 1.4 MHz for optimal efficiency. In addition, NCP6336FCCT1G features power conversion and high power output accuracy. Its quiescent current is typically 100μA and is capable of delivering up to 3A of continuous output current.

The NCP6336FCCT1G operates on a two-phase interleaved PWM (pulse width modulation) architecture with fixed frequency. This architecture makes it efficient with light load and produces minimal ripple. During operation, the device changes the switching frequency with the input voltage to optimize power transfer. The device also provides a mechanism of continuous current containment or short-circuit protection. In addition, the 8-lead SOIC packaging provides a wide range of over-current protection, thermal shutdown protection and short-circuit protection.

Working principle of NCP6336FCCT1G is determined by the switching control circuit which is used to drive the internal PWM pulses. It is based on comparators, drivers and a control circuit. The input voltage is regulated by the comparator, which regulates the output voltage. The driver block consists of two current sensing circuits which draw an adjustable PWM pulse from the comparator and send it to the main gate of the output switch. The duty cycle of the PWM pulse is determined by the voltage difference between the input voltage and the output voltage.

The internal architecture of the NCP6336FCCT1G provides tight distribution of current to the output FETs, while the components inside it are designed to maximise the efficiency of the switching regulator. It also has the ability to operate in a discontinuous mode, which eliminates the need for a large minimum load. In summary, NCP6336FCCT1G is a capable synchronous step-down DC/DC converter solution with certain features, such as wide adjustable switching frequency and excellent power efficiency. This device is part of the DC DC switching regulators which are used in a variety of portable electronic applications.

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