LTC4217IDHC-12#TRPBF

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

Power Management Integrated Circuit (PMIC) - Hot Swap Controllers are specially designed to improve system power management and providing system-level protection from over-voltage or over-current situations during hot-swapping operations. The use of such controllers greatly improves the power-on reliability and system efficiency due to the presence of voltage sensing circuits, multiple voltage rail support and lower-cost components. They enable hot-swapping of power supply units without having to manually adjust the link voltage or enable/disable the power source.

The LTC4217IDHC-12#TRPBF is a High Current Hot Swap Controller designed for over-voltage/over-current protection. It allows a board to be hot swapped by controlling external N-channel MOSFETs. When present, the Hot Swap controller monitors the incoming voltage and regulates a current limit that is adjustable over a 0.6 A to 7 A range. Special features include an adjustable current limit, engaging and releasing the high-side MOSFET with power good and fault indicator outputs.

The Hot Swap controller offers protection from over-voltage, over-current and transient faults, ensuring reliable system operation. The lockable current limit is adjustable between 0.6 A and 7 A, allowing for over-current protection on a wide range of loads. An on-board status LED indicates when the load current approaches the current limit setting. This feature allows the user to monitor and adjust the current limit to prevent damages from over-current conditions.

APPLICATION FIELD

The LTC4217IDHC-12#TRPBF is designed for hot-swapping of boards in server applications. It is suitable for powering cards and hard drives, making it the ideal choice for applications including storage and server management. In addition, the device can also be used to hot-swap boards with power supply units in telecom applications, flash storage, portable computing, and industrial automation systems.

WORKING PRINCIPLE

The working principle of the LTC4217IDHC-12#TRPBF is based on an input voltage range from 6.5V to 28V. It utilizes the series pass MOSFET to switch the current when the load is applied to the system. An internal voltage regulator provides a regulated voltage to the controller. An external sense resistor is used to sense the load current flowing through the system, and a power good output is used to indicate the status of the load current.

An external resistor is used to set the current limit (ILSET) to limit the maximum current that can flow through the system. The ILSET is adjustable from 0.6A to 7A and can be adjusted based on the requirement of the load. In addition, the LTC4217IDHC-12#TRPBF has a power fault indicator with an output level of VDD when the load current exceeds the current limit. An engaging and releasing MOSFET is used to control the voltage on the load, allowing hot-swapping operations.

The LTC4217IDHC-12#TRPBF also provides an over-voltage protection (OVP) feature to protect from voltage surges caused by the load. When an over-voltage condition is detected, the controller shuts off the MOSFET and prevents further voltage spikes. An external resistor can be used to set the OVP threshold. This feature is used to ensure a safe and reliable hot-swapping operation.

In summary, the LTC4217IDHC-12#TRPBF Hot Swap Controller is designed to provide system-level protection from over-voltage and over-current situations during hot-swapping operations. It features adjustable current limit, power good and fault indicator outputs, and over-voltage protection. It is suitable for use in server applications, such as storage and server management, telecom applications, flash storage, portable computing, and industrial automation systems.

The specific data is subject to PDF, and the above content is for reference