AS1909C17-T

Series:	--
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Part Status:	Obsolete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:	100 ms Minimum
Voltage - Threshold:	1.7V
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

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PMIC - Supervisors

Power Management Integrated Circuits (PMICs) are essential components in modern electronic systems. They mainly provide power supply and support devices with precise, reliable and efficient power delivery. Supervisors, one type of PMIC, usually provide voltage monitoring, system reset and other critical power supply functions. AS1909C17-T is one of the supervisors that designed to safely monitor power supplies, offer protection, and provide system reset and other power control functions.

Application Field

AS1909C17-T is primarily used for power supply monitoring and control. It is suitable for various types of power sources or power lines, including 3.3V/5V/12V, especially for power supplies in the range from 6V to 36V. It is mainly used in the industrial market such as industrial control, automation, robotics, power supplies and instrumentation applications.

Working Principle

AS1909C17-T monitor power supply voltages by setting and detecting the voltage levels of their inputs. The detection input can be preset as an open-collector or open-drain output that interfaces with external power supplies. When the input voltage is more than the preset voltage (the upper trip), the reset output pin will be active, while the output of the reset pin will be triggered low when the voltage drops below the preset voltage (the lower trip).In addition, the reset pin can be configured to be active low or active high. It can be used to reset the system, reset other parts of the power supply, or even control external logic directly. Furthermore, the AS1909C17-T also provides a watchdog timer to monitor the system and can be started, stopped and cleared by the external controller. The timer output can be configured to generate an active low or active high output signal.The AS1909C17-T can be used in almost any type of power supply system. It enables independent upper and lower trips and provides a wide range of voltage sensing options and support for various levels of power control functions.

Conclusion

AS1909C17-T is a reliable and efficient supervisor integrated with power supply monitoring, protection and system reset functions. It is well suited for various kinds of power source voltages, especially in the industrial market, such as industrial control, power supply and instrumentation applications. The supervisor is designed to offer precise, reliable and efficient data processing and power management. It has the ability to detect and monitor voltage levels and react instantly when voltage levels exceed limits. It can be used to reset the system and control external logic directly, while providing a watchdog timer to monitor the system.

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