S-1003NA14I-I6T1U

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Power management integrated circuits (PMIC) are an important component of any system design. They are specifically designed to provide a regulated power supply to all system components, while also protecting them from any external disturbances. Supervisors, a type of PMIC, monitor voltage levels and issue alerts to allow for dynamic changes in system power requirements. S-1003NA14I-I6T1U is a supervisor IC device from Renesas Electronics FR6900 family.

S-1003NA14I-I6T1U is an ultra-low power supervisor integrated circuit with high accuracy monitoring. It is specifically designed for monitoring low voltage and current applications, ideal for battery-operated devices. The device is available in a miniature 8-pin TDFN package with a 2 mm x 2 mm body size. It can monitor up to four different power rail voltages and provide active reset signals to system components upon brown-out condition detection. The device features high accuracy with low power consumption, 10 µA typical, and is suitable for monitoring a wide range of battery cells including Li-ion, LiRC, NiCd, NiMh, lead-acid and alkaline.

Applications

The S-1003NA14I-I6T1U is suitable for many different applications, including medical devices, portable communications, GPS systems, data loggers, and other low power devices. It is ideal for use in battery operated applications, where its low power consumption allows for an extended battery life. It is also a good option for thermal and environmental design considerations due to its small size.

Working Principle

The S-1003NA14I-I6T1U monitors its inputs from up to four different voltages or current levels and issues an active reset when a voltage or current falls below a pre-set threshold for longer than a defined period of time. The thresholds can be individually configured for each monitored power rail, and reset can be issued to high or low states (active-high or active-low). It also features reverse current protection, which protects the device in case of external power supply failure.

The supervisor has two distinct modes of operation. The first mode is margin mode, in which the voltage levels of external power supplies are constantly monitored. If the voltage at any of the input pins falls below a pre-defined threshold, the supervisor will issue a reset. The second mode is sequencer mode, in which the monitored voltages must stay within pre-defined ranges in order for the supervisor to pass them and not issue a reset.

The supervisor is also capable of automatic recovery during its margin interrupt mode. Once the voltage returns to the acceptable limit, the supervisor will reset and resume normal operation. This feature helps reduce consumption of power, which is especially beneficial for battery-operated systems. This feature also helps avoid confusion during operation, as there is no need for for manual intervention or reset during this process.

Conclusion

The S-1003NA14I-I6T1U is an ideal option for any application requiring dynamic voltage or current monitoring in low-power applications. Its low power consumption and small size make it suitable for portable applications, while its margin and sequencer modes provide reliable and accurate reset signals to protect system components. The reverse current protection feature adds an extra layer of security to the system, ensuring that it remains stable even in the event of external power supply failure.

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