RT9818A-34GV

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Type:	Simple Reset/Power-On Reset
Number of Voltages Monitored:	1
Output:	Open Drain or Open Collector
Reset:	Active Low
Reset Timeout:	0 ms Typical
Voltage - Threshold:	3.4V
Operating Temperature:	-40°C ~ 85°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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Introduction to RT9818A-34GV

The RT9818A-34GV is a PMIC (Power Management Integrated Circuit) that belongs to the class of Supervisors, which are power related integrated circuits used to monitor and control external power sources in order to ensure system reliability. This product is a member of the Richtek Technology’s Super Visor family of products, and is specifically designed for low-power operation in portable applications such as mobile phones, tablets, small PDAs, and other handheld devices.

Functions

The RT9818A-34GV is a high-performance and cost-effective PMIC with several features that provide a wide array of system protection and power management functions. Its features include over-current protection (OCP) for power source load current and voltage protection for device output voltages. It also provides adjustable undervoltage and overvoltage protection, as well as power sequence control and LED control. Additionally, it provides a wide array of clock and reset functions, including watchdog timer, multiple reset pin functions, clock buffer and low power reset outputs.

Application Field & Working Principle

The RT9818A-34GV can be employed in a wide range of applications and is particularly suitable for mobile devices and low-power applications. Its working principle is relatively simple. When the power supply is connected, the RT9818A-34GV provides voltage detection and event sequence protection with its undervoltage (UV) and overvoltage (OV) protection levels, preventing short circuits and other damage to the power supply or the system as a result of excessive or insufficient voltages. Additionally, it provides OCP protection, which works by implementing a current limit setpoint to ensure that the system does not draw more current than what is allowed by the OCP protection. Finally, when a fault is detected, the Supervisor will cause a reset which will ultimately result in a low power condition in which the system is in a safe state.

Conclusion

In conclusion, the RT9818A-34GV is a high performance and cost-effective PMIC with features that provide a wide range of system protection and power management. It is suitable for use in a variety of applications ranging from mobile devices to low-power applications, and its working principle is relatively simple. With its OCP and voltage protection functions, it can effectively protect the system from short circuits and other damages due to excessive or insufficient voltages, while its reset functions allow the system to enter a low power safe state in the event of a fault. As such, the RT9818A-34GV can provide an efficient and reliable power management solution to ensure system reliability.

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