LP3470IM5-3.65 Integrated Circuits (ICs)

Power management integrated circuits (PMICs) are a type of semiconductor component that distributes power from a variety of sources, including from the mains power wiring and standby power supplies, and uses this power to run multiple integrated circuits and other components. There are a variety of different types of PMICs, each with its own features and characteristics. Among these types, supervisors, also known as voltage supervisors, are basically used to monitor and protect the system from any occurrence of low or high voltages. One of the most commonly used supervisors is the LP3470IM5-3.65.

The LP3470IM5-3.65 Voltage Supervisor is a type 4 SOT23 voltage monitor intended for use in automotive applications. It is designed to detect, limit and protect against low battery or supply voltages while providing accurate monitoring and triggering of over or undervoltage events. This supervisor offers selectable Under-Voltage (UV) and Over-Voltage (OV) detection thresholds and a range of hysteresis options for superior transient response. It features programmable reset output delays up to 200 milliseconds to eliminate false triggering and offers optional adjustment of the UV and OV thresholds from 2.33V to 5.25V in 0.1V increments.

Application Field

As the LP3470IM5-3.65 is designed for automotive applications, it is used to monitor and protect automobile electronic systems from low or high voltages. This voltage supervisor can be used in a variety of automotive applications, such as in fuel injection systems, engine control systems, air bags and power steering systems. It is also used in air conditioning systems given its ability to protect the system from over or under voltage.

Working Principle

When the LP3470IM5-3.65 supervisor is activated, it monitors and compares the supply voltage levels with the fixed voltage thresholds programmed into it. When the voltage level is below the Under-Voltage Threshold (UVT) or above the Over-Voltage Threshold (OVT) value, it will immediately switch on the reset output. It also switches off the reset output after the supply voltage returns to normal. In addition, this supervisor also has a power-on reset (POR) circuit. This POR circuit will reset the system whenever a power-on reset event occurs.

In summary, the LP3470IM5-3.65 voltage supervisor is a device used to protect automotive systems from over or under voltage conditions. It is used to monitor and regulate the supply voltage levels and prevent system malfunction or damage. This supervisor offers the adjustable UV and OV thresholds, as well as POR feature, making it an excellent choice for automotive applications.