NCV809RTRG

Series:	Automotive, AEC-Q100
Packaging:	Tape & Reel (TR)
Part Status:	Active
Type:	Simple Reset/Power-On Reset
Number of Voltages Monitored:	1
Output:	Push-Pull, Totem Pole
Reset:	Active Low
Reset Timeout:	140 ms Minimum
Voltage - Threshold:	2.63V
Operating Temperature:	-40°C ~ 125°C (TA)
Mounting Type:	Surface Mount
Package / Case:	TO-236-3, SC-59, SOT-23-3
Supplier Device Package:	SOT-23-3 (TO-236)
Base Part Number:	NCV809

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Introduction

The NCV809RTRG is a voltage supervisor designed to monitor the power supply of microcontroller-based systems and digital circuit applications, which can detect power supply failures, detect and reset open drain logic, and provide low current LED driver outputs and digital interfaces.

Defining the NCV809RTRG PMIC - Supervisor

The NCV809RTRG PMIC – Supervisor is a voltage supervisor designed specifically to monitor the power supply of microcontroller-based applications and digital circuit applications. The NCV809RTRG can detect power supply failures, detect and reset open drain logic, and provide low current LED driver outputs and digital interfaces.

Application Field and Working Principle of the NCV809RTRG

The NCV809RTRG can detect power supply failures and reset open drain logic for improved system resiliency. It is available in very small packages such as chip-scale, SC70 and SOT223 open drain packages. It can operate in a wide range of voltages from 2.25V to 13.5V and is capable of operating at temperatures from -40°C to 125°C.The NCV809RTRG application field includes automotive, industrial, military and communication systems. This voltage supervisor can also be used in low voltage applications such as 10V, 12V, and 15V battery-powered mobile devices.The NCV809RTRG is a simple and efficient supervisory IC. It features an input/output filtering configuration with hysteresis. It has a voltage detection threshold of 1.8V with a hysteresis of 50mV which allows for efficient power supply monitoring. The reset output is configured to be asserted when the input voltage drops below the specified threshold and is maintained asserted until the voltage rises above the complement of the specified threshold.In addition to power supply monitoring, the NCV809RTRG can also be used to detect and reset open drain logic. The reset output is configured to be asserted when the voltage at the reset input drops below the specified threshold. The reset output remains asserted until the reset input has been reset. The NCV809RTRG also has a low current LED driver output that can be used to provide visual indication of the device’s status. The LED driver output is a voltage-controlled pulse-width modulated output that is capable of driving an LED with a current up to 20mA.Finally, the NCV809RTRG also includes an integrated digital interface which can be used to control the various features of the device. The digital interface is composed of a serial port which can be programmed to perform a variety of tasks including adjusting the reset and power supply thresholds, setting the pre-charge time, setting the post-charge time, and enabling or disabling the device.

Conclusion

The NCV809RTRG PMIC – Supervisor is a voltage supervisor designed specifically to monitor the power supply of microcontroller-based applications and digital circuit applications. It is capable of detecting power supply failures and resetting open drain logic and also provides a low current LED driver output and digital interface. The NCV809RTRG is available in very small packages and can operate in a wide range of voltages and temperatures. It is suitable for applications in automotive, industrial, military and communication systems, as well as low voltage mobile device applications.

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