STM6780LWB6F Integrated Circuits (ICs)

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STM6780LWB6F application field and working principle

Supervisors are highly integrated power management devices which combine several functions in a single package such as monitoring inputs, managing supply voltages, and providing system reset signals. They are designed to monitor the power rail of a system or processor, and will alert the processor when input thresholds are exceeded with either an asserted reset or an interrupt signal.The STM6780LWB6F Supervisors fall under the Power Management Integrated Circuit (PMIC) category which extends beyond simple power management and controlling of many outputs. They are commonly used to protect components and systems from dangerous faults, overheating, and overvoltage.The STM6780LWB6F offers advanced protection and robust system power integrity, making it suitable for a wide range of applications including wireless basestations, telecom infrastructure, and industrial equipment.

Features and Benefits

The STM6780LWB6F Supervisors are packed with many features and benefits which make them an ideal choice for a wide range of applications. They are integrated with five thresholds and a reset output and provide reliable power integrity for improved overall system performance. Here are some prominent features and benefits that come with the STM6780LWB6F:

• Wide Supply Voltage Range: The device can operate in supply voltage range of 2.7V to 4.5V, making it suitable for a wide range of applications.
• Latch-Up Protection: The supervisors provide latch-up protection up to 102mA, which protects against input overvoltage and current surges due to ESD or miswiring activities.
• Under-Voltage and Over-Voltage Detection: These two functions allow the device to detect input voltages above and below certain thresholds and generate a reset signal or an interrupt when either threshold is passed.
• Watchdog Timer: The device also includes an on-chip watchdog timer which allows the supervisor to issue a reset signal when it has not been kept active by a host processor.
• Wide Temperature Range: The STM6780LWB6F can operate in temperature range of -40°C to 125°C, making it suitable for a wide range of applications in extremes of temperatures.

Working Principle

The STM6780LWB6F is based on a bidirectional comparator with hysteresis, which compares the input voltage to two pre-defined thresholds, one for the upper voltage threshold, and one for the lower voltage threshold. When the input voltage falls below the lower threshold or above the upper threshold, the device will assert a reset or interrupt signal.

The device also has a watchdog timer, which can be programmed to generate a reset signal if the timer is not kept active by the host processor. The watchdog timer is based on an on-chip oscillator which can be programmed to generate a reset signal between 1ms and 131s.

The latch-up protection feature of the device protects against negative transient voltage events of up to V±1.7V, while the over-voltage protection feature ensures that the input voltage will not exceed the upper and lower thresholds.

Applications

The STM6780LWB6F Supervisors can be used in many applications such as wireless basestations, telecom infrastructure, and industrial equipment. They can also be used in computers, servers, data centers, and IoT devices.

The device’s wide supply voltage range, temperature range, and its flexible reset signal options makes it a good choice for applications where reliable power integrity is needed. The watchdog timer also helps provide the system protection from processor cycles.

Conclusion

The STM6780LWB6F Supervisors are a reliable and cost-effective solution for many applications. They offer advanced protection features such as latchup protection, under-voltage and over-voltage detection, and a watchdog timer. This makes them a good choice for a wide range of applications.

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