NCP4680DMX23TCG

NCP4680DMX23TCG Application Fields and Working Principle

NCP4680DMX23TCG is a linear voltage regulator which belongs to the Power Management IC (PMIC) family. The integrated device is designed to work with a wide input voltage range from 4.5V to 36V and provides a low dropout (LDO) 5V ±2% regulated output of up to 500mA. This PMIC is a cost-effective solution for automotive power systems, medical instruments and other applications where a low voltage source is needed.

Application Fields

NCP4680DMX23TCG can be used in wide range of input voltage applications requiring to generate 5V regulated output. It is usually used as a supply for microcontrollers, memory, logic ICs, RF/optical interface ICs and other digital ICs that need precise power regulation. Some typical applications include:

• Automotive Battery Management Systems
• Power Supplies for Industrial Automation Systems
• Medical Instruments and Monitoring Systems
• Aerospace Systems
• Point-of-Load Supplies

Working Principle

NCP4680DMX23TCG uses a low noise, low dropout regulator inside to maintain a fixed output voltage with high accuracy. The output voltage is set by the external resistors R1 and R2 and it is determined by the formula VOUT=(1+R1/R2) × VREF. The regulators employ an internal reference voltage of 1.21V that is trimmed to 1% accuracy. The device is able to regulate its output voltage to a low value of 4.5V when compared to other solutions. The NCP4680DMX23TCG also features a current limited shutdown mode, which ensures the safety of the system under fault conditions or heavy load conditions.

The NCP4680DMX23TCG utilizes a 255mV current-mode control architecture to ensure a fast transient response to load changes. The design is optimized to keep the output voltage ripple at a low value, and the output voltage is maintained at its desired level over a wide temperature range and load condition. The device also provides a low quiescent current operation that lowers system power consumption and extends battery life.

Conclusion

The NCP4680DMX23TCG is a PMIC-linear voltage regulator which is designed to work in a wide input voltage range from 4.5V up to 36V. This device is ideal for applications where precise power regulation is required, such as automotive battery management systems, industrial automation systems, medical instruments, aerospace systems and point-of-load supplies. The NCP4680DMX23TCG features a low-noise current mode architecture and a low dropout 5V regulated output of up to 500mA. Furthermore, the device offers a low quiescent current operation and a fast transient response.