LTC4367HDD#PBF

LTC4367HDD#PBF is a power management integrated circuit (PMIC) specializing in power management. It is specifically designed to provide current and voltage protection for intelligent circuits that require a wide range of input voltages and current protection. This article will discuss the application field and working principles of the LTC4367HDD#PBF PMIC.

Application Field

The application field of LTC4367HDD#PBF is primarily focused on embedded intelligent systems such as optical networking, Industrial Ethernet and PoE. It is especially useful for applications with high power requirement and tight cost budget. As it integrates a wide range of protections for over-voltage, overcurrent and short-circuit conditions, it is suitable for power management of embedded systems with high current requirement and tight cost budget. It is often used in switches, routers, servers, base stations and other communication equipment.

In addition, LTC4367HDD#PBF is also suitable for automotive applications, such as in-vehicle networks. The device also integrates Auto-Recovery MOSFET, which provides fast and accurate protection to the automotive system during power overload or undervoltage conditions. Therefore, it is suitable for a wide range of automotive applications with limited cost in space.

Working Principles

The working principle of LTC4367HDD#PBF can be divided into three parts: the power supply unit (PSU), the over-current protection (OCP) unit and the over-voltage protection (OVP) unit. First, the power supply unit provides power to the system. It applies a DC-to-DC buck converter topology which is configured with switching frequency of 500KHz. This provides a stable voltage and current supply to the system.

In the next part, the OCP unit protects the system from current overloads by limiting the maximum allowed current. It monitors the input current and trips its output when it detects the input current is above the threshold. Then, the OVP unit provides protection from voltages spikes. It monitors the input voltage and trips its output when it detects the input voltage is above the threshold. The trip threshold and delay time for OCP and OVP are both configurable.

Thanks to its wide range of protections such as OCP, OVP and Auto-Recovery MOSFET, the LTC4367HDD#PBF PMIC offers a highly reliable solution for power management. It is suitable for applications with high power requirement and tight cost budget, making it an ideal choice for embedded systems, automotive systems, etc.