CAT1161LI42

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PMIC - Supervisors are safety components used to monitor operating conditions in a system. They provide status, as well as time out and delay functions, which help to protect all electronic components from uncontrolled conditions. CAT1161LI42 is a voltage supervisor IC with push-pull TTL-CMOS signal output. It is designed in SOT-23 small package and the application field is wide.

The CAT1161LI42 voltage supervisor IC can be used in a variety of system monitoring and real-time protection. Generally, it can be used in AC/DC power supply, multimedia device, computer server, automotive and LED display, etc. It can be used as an IC to detect overvoltage or undervoltage conditions to ensure that no damage is caused to the system.

CAT1161LI42 voltage supervisor IC provides voltage monitoring, guaranteed to operate and latch off above the preset threshold voltage. It has a push-pull TTL-CMOS output that gives a visual indication of high or low battery voltage levels in microcontroller-based designs. CAT1161LI42 also provides user-selectable timeout periods to avoid spurious reset signals, stabilize system operation and prevent data corruption. Furthermore, it can provide fail-safe protection against brown-out conditions, reverse battery protection and overvoltage protection.

The working principle of CAT1161LI42 voltage supervisor IC is to compare its reference voltage to an internal or external signal and then provide an output signal. The output signal can be used to control the on/off state of a device. When the input voltage is lower than the preset threshold voltage, the output signal will be low. When the input voltage is greater than the preset threshold voltage, the output signal will be high. And if the input voltage exceeds the threshold voltage for a specified amount of time, the output signal will be latched off.

CAT1161LI42 voltage supervisor IC also offers low power consumption and can operate at a supply voltage range from 1.3V to 6.4V. Its response time can be set in 16 steps among 64ms to 1.1 second. With a low quiescent current of 0.8µA, it is ideal for battery powered applications. In addition, it provides an adjustable threshold voltage from 1.5V to 4V with 40mV resolution which could meet a wide range of over/undervoltage recovery thresholds.

The CAT1161LI42 voltage supervisor IC provides a maximum 30mA sink/source output capability, which can supply an external MOSFET to drive an LED, buzzer or relay. It is capable of withstanding transients up to 6V and it offers 10ms of input filter time to reject fast voltage change.

CAT1161LI42 voltage supervisor IC is a powerful device which can be used to monitor different system parameters such as DC input voltage, AC input voltage, input current and output power, etc. It has the advantages of low standby current consumption, a wide operating voltage range, high over/under voltage protection and adjustable threshold voltage. For these reasons, it is an ideal solution for various industries.

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