LP3470M5-2.63 Integrated Circuits (ICs)

PMIC - Supervisors

LP3470M5-2.63 is a type of PMIC-Supervisors, specifically a voltage supervisor. PMIC-Supervisors are integrated circuits (ICs) that monitor system-level functions such as power supply failure, short circuit, and over temperature. They help maintain an accurate supply voltage and provide fault protection in order to protect the system from possible failure.

Application Field

The LP3470M5-2.63 is typically used in various power management applications. It can be used to supervisory battery-powered applications, automotive electronics, handheld devices, and industrial systems. It is designed to provide low-power, low-cost protection for single supply logic and circuits. It is a versatile chip that is capable of monitoring multiple supplies and providing comprehensive fault protection.

This voltage supervisor has a wide array of useful applications such as cell phones and audio amplifiers. In battery powered applications, such as in cell phones, the LP3470M5-2.63 can be used to monitor the cell voltage and keep it within a safe range. In audio amplifiers, it can be used to monitor the input voltage levels and to protect the amplifier from being damaged.

Working Principle

The LP3470M5-2.63 integrates two voltage comparators, a voltage reference, and a reset timer circuit in a single package. The two comparators are used to monitor supply voltage and detect fault conditions. The voltage reference provides a reference voltage level to the voltage comparator. This reference voltage can be adjusted to set the trip point value.

When the supply voltage is greater than the trip point Voltage, the Reset Output is held high and in a logic “1” state. When the supply voltage drops below the trip point voltage due to a fault condition, the Reset Output changes to a logic “0” state and initiates resetting of the microcontroller or other components in the system.

The reset output pulse provides a pulseLow signal that is generated after a power-up or power down condition. The width of the reset pulse is adjustable with an external capacitor that is connected to the reset pin. The Reset Output pin also provides an active low reset flag output. This can be used to monitor fault conditions and to indicate that the Reset Output has been activated.

The LP3470M5-2.63 can be programmed to monitor up to four supply voltages. The voltage comparators can be programmed to detect supply voltage ranging from 0.8V to 17V. It can operate from a supply voltage of 2.5V to 6V.

Conclusion

In conclusion, the LP3470M5-2.63 is a useful PMIC-Supervisor for managing power management applications. This voltage supervisor can provide low-power, low-cost protection for single supply logic and circuits. The reset timer circuit and reset output pulse provide a critical safety feature for these types of applications. The LP3470M5-2.63 is a versatile IC that can be programmed to monitor up to four supply voltages and detect fault conditions.