NCP4303BMNTWG

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

The NCP4303BMNTWG device is a low voltage system reset monitor and power supervisor. It monitors power supply conditions and provides system reset signal when severely out-of-tolerance conditions occur. The NCP4303BMNTWG is ideally suited for applications in notebook computers, handheld and portable equipment, as well as off-line, standby and low power converter applications. The device is implemented using advanced CMOS technology, enabling it to achieve high levels of integration, improved reliability, low power consumption and small package size at minimal cost.

Application Field of NCP4303BMNTWG

The NCP4303BMNTWG is a low voltage system reset monitor and power supervisor and is often used in portable device and notebook computer applications. The device has a wide range of other potential applications, such as off-line, standby, and low power converters. The device monitors multiple power supplies and provides a system reset signal when any one of the supplies is out of tolerance. System reset timings are adjustable by external resistors, enabling designers to optimize their system timing. The active-low RESET_OUT asserts when the monitored power supplies are out of tolerance, and the active-high PWD_OUT de-asserts when the monitored power supplies are within specified limits.

Working Principle of NCP4303BMNTWG

The NCP4303BMNTWG device is built upon two major blocks: a voltage monitoring circuit, and a delay and reset timer circuit. The voltage monitoring circuit performs the task of monitoring the status of the various power supplies and detecting when any one of them is out of tolerance. It contains comparators to compare the input voltage to a set of internal reference voltages. The delay and reset timer circuit is responsible for providing a delayed reset signal when the voltage monitoring circuit detects out-of-tolerance condition. The delay is set using the external RESET_OUT active-high delay timer resistance, which can be adjusted according to the needs of the application.

The NCP4303BMNTWG is designed to provide flexibility in system shutdown timing adjustment. This can be done by programming the delay knob. The delay knob allows for accurate adjustment of the delay by setting the amount of current drawn by the internal charge pump. This in turn can be used to set the delay timer to its desired value. Once the delay knob is set, the delay timer will be active and will cause the RESET_OUT signal to be de-asserted after the preset time.

The NCP4303BMNTWG is designed to ensure its output stays active while power supplies are out-of-tolerance. It employs an internal hysterisis circuit that keeps the RESET_OUT and PWD_OUT signals active during power supply fluctuations. It also provides a manual reset input pin that allows the reset to be triggered externally.

The NCP4303BMNTWG is designed to meet the stringent requirements of battery-powered applications. It achieves higher integration, improved reliability, low power consumption, while still maintaining a small package size. It has very low current consumption, making it well suited for portable equipment and other low power applications. The device is available in a variety of standard packages, allowing for the flexibility of design.

The specific data is subject to PDF, and the above content is for reference