S-80160ALMC-JBLT2G

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The S-80160ALMC-JBLT2G is a 3-terminal CMOS system reset IC used in a variety of applications. It belongs to the family of Power Management ICs (PMIC), and more specifically, to supervisory circuits. It provides a time-delayed reset signal, which can be used to reset the system when needed. This article will discuss its application field and working principle.

Application Field

The S-80160ALMC-JBLT2G provides circuit reset support for a multitude of digital systems, including consumer electronics, office automation, audio-visual equipment and industrial control systems. It supports single-supply voltages from 1.5V to 5V, making it suitable for a range of applications.

The most common applications for this IC are for resetting the system after a power outage or when system clocks or microcontrollers require a reset. It protects the user’s system against damage due to abnormal operations, such as over-discharging of batteries, short circuits and the like.

Working Principle

The S-80160ALMC-JBLT2G consists of a voltage detector, a timer, and a reset output circuit. The voltage detector monitors the voltage of the power supply and when it drops below the set threshold, it triggers the timer. The timer, in turn, produces a reset signal after a predetermined lapse of time, typically from 2 ms to 100 ms.

The reset output circuit is composed of a transistor and a capacitor. When the reset signal is triggered, the transistor turns on, thus charging the capacitor. When the capacitor is fully charged, it produces the reset output signal, which is then sent to the system. The system then performs a reset when this signal is received, restoring it to its initial state.

The threshold voltage of the voltage detector can be adjusted using a voltage divider, up to a maximum of 5V. This allows the resetting time to be adjusted according to the power supply, allowing it to be finely tuned for each application.

Conclusion

The S-80160ALMC-JBLT2G is a 3-terminal CMOS system reset IC designed for PMIC - Supervisors applications. The built-in voltage detector monitors the input voltage and triggers the reset signal after a set time, allowing the system to return to its initial state. The threshold voltage of the voltage detector can be adjusted to accommodate various power supplies, allowing the resetting time to be precisely adjusted for any application.

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