NCV303LSN29T1

Series:	Automotive, AEC-Q100
Packaging:	Tape & Reel (TR)
Part Status:	Obsolete
Type:	Simple Reset/Power-On Reset
Number of Voltages Monitored:	1
Output:	Open Drain or Open Collector
Reset:	Active Low
Reset Timeout:	Adjustable/Selectable
Voltage - Threshold:	2.9V
Operating Temperature:	-40°C ~ 125°C (TA)
Mounting Type:	Surface Mount
Package / Case:	SOT-23-5 Thin, TSOT-23-5
Supplier Device Package:	5-TSOP
Base Part Number:	NCV303

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NCV303LSN29T1 is a voltage supervisor from ON Semiconductor. It is a component in the PMIC - Supervisors category, which serves to monitor output voltage in order to protect the system against unwanted conditions. The component functions as a self-powered single or dual voltage monitoring device and is designed to provide an autonomous sensing, latching, and reset of the micro-controller or module supply voltage. It is ideal for internal and external microprocessor-based systems such as those found in PC peripherals and embedded systems.The NCV303LSN29T1 voltage supervisor has various applications, such as motherboard and external power source supervision, system reset, input signal monitoring, and signal stabilization. In addition, it can protect against voltage overshoots, undervoltage conditions, overvoltage conditions, and sudden power loss or noise spikes. It is also suitable for wired and wireless communication systems, power supplies, and other digital systems.The device contains two voltage supervisors that are powered by a 2.3 V to 3.6 V input voltage. The main voltage supervisor monitors the system\'s supply voltage while the second monitor is intended to provide a signal of a predetermined voltage. The output of the main supervisor is used to indicate whether the system is in normal or warning mode. At the same time, the output of the second monitor is used to indicate either low power or an overvoltage condition.The main voltage supervisor monitors an input voltage range of 0.93 V to 6.25 V, while the second voltage supervisor monitors an input voltage range of 1.2V to 3.6V. Both levels can be programmed with a potentiometer or resistors for accurate voltage level detection. The dual voltage suppression feature of the supervisor ensures durability and reliability by shutting down the system when the input exceeds the rated maximum.The NCV303LSN29T1 voltage supervisor uses two separate input and output levels. When the input voltage is within the normal range, the output will have a logic high, while when the input voltage exceeds the preset upper limit, the output will switch to a low state. The device is paralleled, using an N—channel FET as a switch, which provides fault protection to any connected devices. The total power dissipation is typically 70.5 mW at room temperature and increases when the temperature increases.The NCV303LSN29T1 voltage supervisor also has an integrated watchdog timer that can be used to generate a reset signal. The way the watchdog timer works is that it repeatedly sends out a pulse signal to a device to check if it is still functioning. If the device doesn\'t respond to the pulse within a certain amount of time, the timer will reset the system to reboot it. This feature is great for preventing crashes due to misbehaving code or malfunctioning hardware.In summary, the NCV303LSN29T1 voltage supervisor is an ideal solution for providing reliable and accurate monitoring of system supply and input voltages, as well as reset and overvoltage protection. The device has an integrated watchdog timer, which can provide a reset signal if necessary. It is suitable for use in a variety of applications, such as motherboard and external power source supervision, system reset, and more.

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