NCP302LSN47T1G

NCP302LSN47T1G, which is classified in Power Management integrated Circuit (PMIC) – Supervisors, is an over-temperature protection device. With built-in temperature sensing element, it provides precision over-temperature protection for low-power applications, such as small appliances, fitness or healthcare devices, or remote control toys. It is suitable for systems which do not have a real-time temperature reading or the ability to shut down the output voltage after the temperature exceeds the safe working range.

NCP302LSN47T1G integrates two temperature-sensing functions: overtemperature protection to prevent the system from being damaged and a temperature alarm signal output, which will alarm the user before the system reaches an unsafe temperature. In addition, its built-in hysteresis helps minimize the number of overtemperature events.

Working Principle

The NCP302LSN47T1G provides a temperature cutoff alarm when the temperature of the system exceeds the safety limit. When the device\'s input voltage is higher than the recommend operation voltage, its temperature sensing elements will output a voltage that varies with temperature. The over temperature protection circuit consisting of a latch and a comparator will trigger when the temperature exceeds the reference temperature. When the over temperature protection is triggered, the latch holds the output at the low level until the reset command is issued.

In addition to the over temperature protection function, the NCP302LSN47T1G also provides a temperature alarm signal output. This feature is useful for applications that require a warning before the safe operating temperature is reached. The temperature alarm output is a logic output that is triggered when the temperature exceeds the set alarm level. The output will continue to be held at the logic high level until the temperature falls below the alarm level.

Application Field

NCP302LSN47T1G is suitable for electronic systems that do not have a real-time temperature reading or the ability to shut down the output voltage safely after the temperature exceeds the safe working range. It is used in a variety of small consumer products, such as remote control toys, fitness or healthcare devices, or small electrical appliances. The device can be used in applications such as motor control or power conversion, where the temperature of the hot spots must not exceed the safe range, otherwise it will cause catastrophic system failure.

The NCP302LSN47T1G operates over a wide temperature range, from -40°C to +125°C. It has a wide operating voltage range, from 2.2V to 5.5V. The device is also RoHS compliant, making it popular in all types of consumer products.

With its built-in temperature sensing element, NCP302LSN47T1G ensures safe and reliable operation. The over temperature protection and temperature alarm features ensure that the system will not be damaged due to temperature overload. It is a reliable and cost-effective solution for applications that require over temperature protection.