S-80931CNNB-G81T2U

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Power management integrated circuits (PMICs) are a critical component of nearly all modern electronic systems, with the primary role of managing, regulating, and distributing power supply. PMICs offer reliable, robust and efficient power management solutions for large and complex systems, enabling better overall system performance. PMICs are commonly used in consumer electronics, automotive, industrial, telecom and home-appliance markets.Supervisors are an important type of PMIC, designed for providing system reliability and stability by detecting power-monitoring conditions within system applications. They can be used to detect out-of-range voltage levels, system status changes as well as power-on and power-off situations. Supervisors are used to protect the system when one or more power supply voltages exceed their maximum or minimum operating levels, allowing for safe and consistent system operation.

S-80931CNNB-G81T2U is a popular PMIC supervisor in the market specializing in system power monitoring and alerting. It is a low-voltage, low-power device that features a configurable input voltage monitoring range, allows for system reset and/or alerting, and includes an open-drain output. It is offered in a 3-pin thin SOP (Small-Outline Package) package and is capable of monitoring input voltages from 0.70V to 2.6V. The output is compatible with CMOS and TTL logic, and the maximum reset/alert delay is 40ms (typical).

S-80931CNNB-G81T2U application field is wide. It is most commonly used in battery powered DC applications and mobile device power systems, especially mobile phone and table power management systems. It can also be used in LED driving, LED backlighting, portable media players and computer applications which require the monitoring of low voltage levels. In addition, S-80931CNNB-G81T2U can be applied to PC motherboards and notebook computers, as well as embedded systems with only single voltage power supply. Moreover, this device is also used in automotive, industrial and telecom application domains.

Regarding the working principle, S-80931CNNB-G81T2U uses a comparator to monitor the input voltage and output an active low signal when the input voltage is below the low reference threshold. When the input voltage rises above the high reference threshold voltage, an active high signal is output. The output signal is then connected to the reset/alert terminal, performing reset or alert actions according to the settings. Furthermore, the device also offers active voltage monitoring with adjustable delay times for reset/alert.

In summary, S-80931CNNB-G81T2U is a low-voltage, low-power PMIC supervisor specializing in system power monitoring and alerting. It has a wide application scope and is widely used in battery powered DC applications, mobile device power systems, LED driving, PC motherboards and embedded systems, and other fields with single voltage power supply. Its working principle is to monitor the input voltage and output an active low or active high signal when the input voltage is below or above the reference threshold respectively. This allows for reliable and efficient system operation, ensuring stability and safety.

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