S-1000C35-N4T1U

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PMIC - Supervisors are an important component of an integrated power system design. The S-1000C35-N4T1U is a comprehensive supervisor integrated circuit (IC) specifically designed to monitor power-on reset, power-off reset, and other power-related functions. It is composed of a dual Power-On Reset (POR) and an integrated window watchdog timer that provides reliable protection against power supply and system malfunctions. This IC also features an input-voltage monitor, which allows designers to set reliable thresholds for monitoring input voltage and prevent system shutdown.

Application Field

The S-1000C35-N4T1U is designed to be used in a variety of applications, including computing, communications, and consumer electronic products. It can also be used in automotive systems and industrial systems. Because of its wide input voltage range, it can be utilized to monitor power supply voltages from 2.3V to 5.5V and to generate a reset signal when voltages drop below 1.91V. This IC is a perfect choice for DSP, microcontroller, and other embedded systems that require power-on and power-off reset. Furthermore, its power-saving sleep input can reduce the current consumption to less than 1microamperes at the same time keeping the chip functional.

Working Principle

The S-1000C35-N4T1U is composed of two parts: a dual Power-on Reset circuit and an integrated window watchdog timer (WDT). The POR circuit senses input voltage and then sets and resets the device to safe states. This prevents the system from malfunctioning or crashing due to unexpected voltage drops. On the other hand, the WDT monitors the signal sent by the microcontroller and resets the device if the signal is not received in a specific time interval. In case of a power failure, the WDT will also be reset and it will take several time outs before the system can be reset. The delay time can be programmed by changing the capacitance of an external capacitor.

In addition to the dual POR and WDT, the S-1000C35-N4T1U also features an input-voltage monitor. This feature provides designers with a versatile way to set reliable voltage thresholds and monitor the power supply voltage. The input voltage is monitored relative to an internal reference voltage so that both under-voltage and over-voltage conditions can be detected. These thresholds can also be used to reset the circuit in case of a power supply failure.

The S-1000C35-N4T1U also features an internal sleep-mode pin that can be used to reduce the current consumption of the device to less than 1microampere. This feature is especially useful for battery-powered applications that may require longer standby times.

The S-1000C35-N4T1U is suitable for use in a wide range of applications and its versatile features make it an ideal choice for power-system management. Its power-save sleep input allows for longer standby times, while its dual POR and integrated window watchdog timer provide reliable protection for power supply and system malfunctions. Finally, its input voltage monitor allows for reliable voltage thresholds to be set and monitored with respect to an internal reference voltage.

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