LTC2919HMS-2.5#TRPBF

Power management integrated circuits (PMICs) are integral components in almost all electronic systems. PMICs provide system power and help manage power flows between the power sources and the components. Supervisors are a type of PMICs that monitor parameters such as voltage, temperature, and current. When certain thresholds are exceeded, they can take corrective action such as activating a reset signal or generating an interrupt. LTC2919HMS-2.5#TRPBF is an example of a supervisor integrated circuit (IC); its application fields and working principle are outlined in this article.

Application Fields of LTC2919HMS-2.5#TRPBF

The LTC2919HMS-2.5#TRPBF is a supervisor IC specifically designed for low-power applications. It offers two power supply monitoring channels, two temperature monitoring channels, one secondary monitoring channel, and one reset-out channel. This allows it to be used in precision power supply monitoring, overvoltage and undervoltage protection, automatic supply sequencing, and component monitoring applications. Additionally, its very low quiescent current of only 0.5 uA and its ability to monitor multiple power domains in one device allows for its use in portable applications that require low power consumption. These applications include wearable devices, IoT devices, and small-scale internet servers.

Working Principle of LTC2919HMS-2.5#TRPBF

The LTC2919HMS-2.5#TRPBF uses a two-stage monitoring circuit to monitor power supplies and temperatures. The first stage is a voltage detector that continuously monitors the voltage of the power supplies. When the voltage of a power supply reaches a certain threshold, the detector activates the second stage of the circuit, which is a comparator. The comparator will then compare the input voltage of the power supply with a user-defined reference voltage, and if the input voltage is lower, the comparator will output a reset signal. The comparator can also be used to monitor temperatures, as the LTC2919HMS-2.5#TRPBF offers two temperature monitoring channels. Additionally, there is a secondary monitoring channel and a reset-out channel, both of which can be used to activate reset signals when user-defined thresholds are exceeded.

Conclusion

The LTC2919HMS-2.5#TRPBF is a supervisor IC specifically designed for low-power applications, such as wearable devices and IoT devices. It offers two power supply monitoring channels, two temperature monitoring channels, one secondary monitoring channel, and one reset-out channel. The IC uses a two-stage monitoring circuit to monitor power supplies and temperatures, and it offers very low quiescent current of only 0.5 uA. These features make the LTC2919HMS-2.5#TRPBF suitable for use in precision power supply monitoring, overvoltage and undervoltage protection, component monitoring, and automatic supply sequencing applications.