S-80951CNMC-G9MT2G

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Power management integrated circuits (PMICs) are commonly used in a variety of applications, such as automotive and consumer electronics, to achieve power efficiency and improved system performance. Supervisors are a class of PMICs that monitor, protect and maintain the stability of a system. The S-80951CNMC-G9MT2G is a supervisor IC from ON Semiconductor that is designed for use in automotive and consumer electronics applications.

Overview of S-80951CNMC-G9MT2G

The S-80951CNMC-G9MT2G is a high-performance supervisor IC featuring a wide input voltage range, low typical operating current and a high-accuracy voltage regulation. The device features one POR/BOR pin and one independent VDDA pin. It provides an adjustable reset (RESET) signal to ensure the system is always in a known state, and it also has a programmable watchdog timer (WDT) with a power-on reset signal. Additionally, the device offers built-in over-temperature protection and a high-impedance output pin (GATEOUT) for system-level power sequencing.

Features

The S-80951CNMC-G9MT2G offers numerous features, such as:

• Wide input voltage range from 4.5V to 28V
• Low typical operating current of 5 μA
• High accuracy voltage monitor (0.5%)
• Programmable reset delay from 0 to 65535ms
• Programmable watchdog time-out from 0 to 65535ms
• Built-in over-temperature protection
• High-impedance output (GATEOUT) for system-level power sequencing
• Available in SOIC-8 and BGA-8 package

Applications

The S-80951CNMC-G9MT2G is particularly suited to applications such as car audio systems, LCD monitor backlighting and power supplies, as well as consumer electronics. The device provides reliable and accurate protection against power supply transients, overvoltage and over-temperature conditions.

Working Principle

The S-80951CNMC-G9MT2G has an integrated voltage regulator which is used to regulate and monitor the system voltage. The regulator is used to compare the system voltage with an externally-set reference voltage, and if the system voltage falls below the reference voltage, then an output signal is generated, which causes the system to reset. Additionally, the device has a programmable watchdog timer (WDT) which monitors the system and provides an output signal after a certain period of time.

The device also has a GATEOUT pin which is used to control system-level power sequencing. The GATEOUT pin is connected to a transistor that is used to switch on and off the supply voltage. This enables the power system to efficiently power up and down the system when needed, thus improving overall power system efficiency.

Conclusion

The S-80951CNMC-G9MT2G is an ideal device for automotive and consumer electronics applications due to its wide input voltage range, low typical operating current, adjustable reset delay, programmable watchdog timer and system-level power sequencing options. The device provides reliable and accurate protection against power supply transients, overvoltage and over-temperature conditions.

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