LTC4223IGN-2#TRPBF

Programmable Features:	Current Limit, Fault Timeout
Base Part Number:	LTC4223
Feature Pins:	12IMON, 12ON, /12PGOOD, AUXON, /AUXPGOOD, /EN, /FAULT, TIMER
Supplier Device Package:	16-SSOP
Package / Case:	16-SSOP (0.154", 3.90mm Width)
Mounting Type:	Surface Mount
Current - Supply:	800µA
Operating Temperature:	-40°C ~ 85°C
Current - Output (Max):	--
Voltage - Supply:	2.7 V ~ 14 V
Series:	--
Features:	Auto Retry, Thermal Limit, UVLO
Applications:	ATCA, MicroTCA™
Internal Switch(s):	Both
Number of Channels:	2
Type:	Hot Swap Controller
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Tape & Reel (TR)

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Power Management IC with Hot Swap Controllers – LTC4223IGN-2#TRPBF

Power management integrated circuits (PMICs) are essential components in the performance and efficiency of any electronic system. PMICs enable designers to easily design and bring to market electronic systems with complex, power-sensitive and power-dissipative features. The LTC4223IGN-2#TRPBF is a versatile hot swap controller from Linear Technology that provides wide range and comprehensive protection.

Application Fields

The LTC4223IGN-2#TRPBF is typically used in applications where hot swap controllers are required, such as control of power supplies in server applications, and equipment used in distributed architectures like telecom and embedded systems.The LTC4223IGN-2#TRPBF can be used to safely power-up or power-down a device simultaneously while minimizing the inrush current and disposing of hot-plugging transients. It also increases system protection by providing overcurrent protection and preventing hot swapping during overvoltage conditions.The device provides independent current-limit control for high burden inrush current control and overcurrent protection. It has independent voltage and current sensing, programmable thresholds, latching or "retry" modes, and a tri-level power-good indicator.The device also features an improved soft-start that limits the output current to a maximum of 0.7A during the soft-start period, which ensures safe insertion and removal of hot-swappable boards. The soft-start feature also provides controlled inrush current for charging large capacitors on the board, which prevents large spikes that can damage components.

Working Principle

The LTC4223IGN-2#TRPBF uses current sensing and load monitoring to provide the user with redundant protection against shocks and fluctuating power.When power is applied, the current sensing circuit checks to ensure that the load current does not exceed the pre-set current limit. If the current limit is exceeded, the device will activate an inrush-control process that limits the maximum peak current to protect the system.The device also uses voltage monitoring to ensure that the voltage does not exceed the pre-set voltage limit. If the voltage limit is exceeded, the device will activate an overvoltage-protection process that shuts off the power supply.The device also monitors temperature to ensure that the board does not overheat during operation. If the temperature exceeds the pre-set temperature limit, the device will shut off the power supply.Finally, the device includes a "power-good" output that indicates when the power-supply voltage is within the predefined range. This output is used to ensure that the system is functioning normally and to provide an alert if the power supply is overvoltaged or undervolted.

Conclusion

The LTC4223IGN-2#TRPBF is an ideal solution for demanding applications requiring fast, accurate, and robust hot-swap control. With comprehensive protection features and a wide range of operation, this device is an ideal choice for hot-swapping applications.

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