LTC4251BIS6-1#TRPBF

Programmable Features:	Circuit Breaker, Current Limit, Fault Timeout, OVP, UVLO
Base Part Number:	LTC4251
Feature Pins:	(UV, OV), TIMER
Supplier Device Package:	TSOT-23-6
Package / Case:	SOT-23-6 Thin, TSOT-23-6
Mounting Type:	Surface Mount
Current - Supply:	800µA
Operating Temperature:	-40°C ~ 85°C
Current - Output (Max):	--
Voltage - Supply:	-72 V ~ -36 V
Series:	--
Features:	Latched Fault
Applications:	-48V
Internal Switch(s):	No
Number of Channels:	1
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 integrated circuits (PMIC) are a series of integrated circuits (ICs) which are used to establish power supply structure, control voltage and current, adapt pulse and other functions of various electrical products.
PMICs are widely used in a variety of electronic products, and the application fields are constantly expanding. Among them, Hot Swap Controllers (HSC) is an important branch of PMIC, and LTC4251BIS6-1#TRPBF, a product of HSC, is an important connecting link for electronic products to quickly start up and improve the system’s robustness.

Introduction of LTC4251BIS6-1#TRPBF
LTC4251BIS6-1#TRPBF is a Hot Swap Controllers (HSC) designed to protect one power supply, one power bus and all of the card slots in the system, as well as hot swap applications from overvoltage and overtemperature. It can work with load capacitance of up to 200nF. This device offers a wide operating temperature range from -40℃ to 105℃ and is offered in an 8-pin SOT-23 package.
Application Field of LTC4251BIS6-1#TRPBF
The LTC4251BIS6-1#TRPBF is designed to be used in a wide variety of Hot Swap applications, such as on-board buses, digital and analog cards, as well as Industrial and Automotive applications. It is commonly used in digital acquisition and transmission devices, such as digital subscribers, DSL modems, digital base stations, set-top boxes, digital audio devices, and other digital and analog equipment.Working Principle of LTC4251BIS6-1#TRPBF
The LTC4251BIS6-1#TRPBF has three main components – an overvoltage protection circuit, an overtemperature protection circuit, and a load disconnect circuit.

• Overvoltage Protection Circuit: This circuit is designed to protect the system from any sudden increase in applied voltage. It senses voltage levels above certain thresholds and will disconnect the load from the power supply in order to protect the system from any immediate damage caused by the overvoltage.
  
• Overtemperature Protection Circuit: This circuit is designed to protect the load from any sudden temperature spikes, such as those caused by hot spots. It senses temperature levels above certain thresholds and will disconnect the load from the power supply in order to protect the system from any immediate damage caused by the elevated temperatures.
  
• Load Disconnect Circuit: This circuit is designed to disconnect the load from the power supply in response to an overvoltage or overtemperature event. It is triggered by the overvoltage and overtemperature protection circuits and will immediately disconnect the load from the power supply, thus providing additional protection to the system.

The LTC4251BIS6-1#TRPBF also includes advanced features such as a programmable hysteresis, current limit detection, and power-good indicator. The hysteresis feature of the circuit allows for a more responsive response to sudden changes in voltage, as the circuit will compare an increasing voltage to a lower threshold and a decreasing voltage to a higher threshold before disconnecting the load. The current limit detection feature allows the circuit to detect current levels that are too large in order to protect the load from any potential damage from overcurrent. Lastly, the power-good indicator allows for a visual confirmation of the circuit’s state and provides a quick way to monitor the circuit’s status.

In short, the LTC4251BIS6-1#TRPBF is an excellent Hot Swap Controllers (HSC) that is designed to protect one power supply, one power bus, and all of the card slots in the system, as well as any other hot swap applications from overvoltage and overtemperature. Thanks to its wide operating temperature range, programmable hysteresis, current limit detection, and power-good indicator, it is a reliable HSC that is widely used in digital acquisition, transmission devices, and many other digital and analog devices.

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