NCP305LSQ17T1G

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Integrated circuit (IC) supervisors are one of the most common power management ICs (PMICs) available in the industry. They are responsible for monitoring and protecting against voltage faults, in addition to controlling and regulating the power management of embedded systems. Supervisors can also provide several additional functions such as frequency switching and programmable reset. In this article, we will look at the features, application field and working principle of the NCP305LSQ17T1G IC.

Features

The NCP305LSQ17T1G is an active-low reset supervisor IC. It includes a sophisticated circuitry system with an internal voltage detector and an internal delay line circuit that can detect in-rush current. The supervisor has a UVLO (Under Voltage Lockout) feature which will lock the output on when the supply voltage drops below the reset threshold. It also features a timeout period of up to 100ms, adjustable tracking and hysteresis for improved accuracy as well as low power consumption.

The supervisor’s input voltage range is 2.7V to 7.0V making it suitable for a wide range of applications. In addition, its low quiescent current consumption of 700nA ensures its compatibility with robust power saving designs. The NCP305LSQ17T1G has a maximum reset active time of 100ms and a pullup current of 15mA which can be used for safely monitoring voltage rails.

Application Field

The NCP305LSQ17T1G is suitable for a range of applications including gaming systems, LCD/LED displays, clock oscillators, embedded systems, and other devices that require a low-power reset supervisor. It is highly suitable for applications where energy optimization is of utmost importance. The supervisor has been successfully tested and approved by several leading manufacturers.

The NCP305LSQ17T1G is most commonly used in electronic products that require tight control of their power consumption and require the protection of their operating voltage. This is especially suitable for devices operating in low voltage (<5V) and low current.

Working Principle

The NCP305LSQ17T1G Supervisor works by triggering a reset when the voltage falls below a predetermined threshold. When the supply voltage rises above the reset threshold, an internal timer is activated which will delay the reset for a specified amount of time. The timer can be set to a specific duration depending on the user’s requirements and the application.

Once the timer times out, the reset is triggered, turning off any load connected to the controller. This ensures that the IC is only activated when the supply voltage is within the parameters set by the user and protects the system from any voltage faults.

The NCP305LSQ17T1G has several features which make it an attractive option for power management applications. These features include a low quiescent current, adjustable tracking and hysteresis, UVLO protection, adjustable reset delay time and adjustable output pulldown current. These features make it a suitable solution for many power management applications.

Conclusion

The NCP305LSQ17T1G is a popular choice for many power management applications due to its wide input voltage range, low quiescent current, adjustable output pulldown current, adjustable delay time and adjustable tracking and hysteresis. Its user-friendly configuration makes it an ideal application for hobbyists, engineers, and companies who need a reliable voltage supervisor with low power consumption, and a wide range of features.

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