CAT1162LI-45-G

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The CAT1162LI-45-G is an integrated circuit packaged in a lead-free 3-lead SOT-23-3 surface-mount case and part of a family of fixed-reset supervisor devices from ON Semiconductor. This IC includes an internal active-low reset logic with a programmable reset threshold that works in an operating voltage range of 1.4V to 5.5V.

The CAT1162LI-45-G is designed to monitor voltage levels and guarantee safe reset of microprocessors and other peripherals in case of problems such as brownouts or system errors. It has a wide range of applications in power control, embedded systems, telecommunications and integrated circuits, among others.

This IC works according to the following principle: the supervisor monitor the input power supply rail, the Vin, comparing it with an adjustable threshold voltage. Depending on their difference, the chip will output either a low or a high voltage level. The reset threshold voltage, Vt, can be adjusted in steps between 1.0 and 5.0V. Any change in the voltage of the input Vin of more than 50mV from Vt will cause the output voltage to switch from either high or low.

When the monitored voltage, Vin, drops below the reset threshold, Vt, the chip will generate a reset signal, pulling the reset pin, RST, to the low level for a period of time set by the RC (resistor-capacitor) settings. After that period of time, the chip will pull the reset pin back to the high level, allowing the microprocessor or other peripherals to resume their normal operations.

To reduce the effect of power supply noise, this IC is equipped with an advanced brown-out reset circuit. In addition, it features an adjustable watchdog timer with a reset delay time ranging from 550ms to 6.5s, reset pulse width greater than 30ms, and accuracy of less than 2%. It also features an over-voltage lockout protection, which helps prevent power supply over-voltages and lockouts that could otherwise damage the chip or other peripherals.

In conclusion, the CAT1162LI-45-G is a versatile ICs idea for reset supervisor and other applications in embedded systems and integrated circuit industries. It also provides excellent protection from power supply noise, over-voltage lockouts, and brownouts.

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