LTC4281IUFD#PBF

Programmable Features:	Current Limit
Base Part Number:	LTC4281
Feature Pins:	--
Supplier Device Package:	28-QFN (4x5)
Package / Case:	28-WFQFN Exposed Pad
Mounting Type:	Surface Mount
Current - Supply:	3.5mA
Operating Temperature:	-40°C ~ 85°C
Current - Output (Max):	--
Voltage - Supply:	2.9 V ~ 33 V
Series:	--
Features:	OVP, UVLO
Applications:	General Purpose
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:	Tube

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PMIC - Hot Swap ControllersHot Swap Controllers are an essential component of modern electronic systems. They ensure that devices are safely and robustly powered away from the main power supply without any risk of power surges or other power issues that could cause damage or malfunction. The LTC4281IUFD#PBF is a Hot Swap Controller from the Linear Technology family of devices that provides a very robust and reliable solution for managing system power requirements.The LTC4281IUFD#PBF is a Hot Swap Controller that is made with a monolithic CMOS process for increased efficiency, durability, and accuracy. It features an integrated low-side MOSFET and built-in electronic over-temperature and over-voltage protection. It provides over-temperature protection by cutting off the output voltage when any of the source voltage or sensed voltage are at least 6V above the absolute maximum junction temperature. This prevents device failure due to hotspots or prolonged use at elevated temperatures. The LTC4281IUFD#PBF also offers built-in over-voltage protection. This feature stops the load from being exposed to levels of input voltage that could cause damage or erratic behavior. It does this by cutting off the main power input when the supply voltage exceeds a predetermined level that is specified in the design.The LTC4281IUFD#PBF offers an additional feature that can be utilized when designing systems with higher voltages -- the adjustable VDDAMIN threshold. This threshold can be set so that the Hot Swap Controller will not allow the voltage of any of the source (Vdd, Vcc, or Vss).The LTC4281IUFD#PBF has an integrated low-side MOSFET which can be used to power a system with varying levels of current. With the adjustable supply voltage threshold and the integrated MOSFET, the LTC4281IUFD#PBF can provide up to 500mA of continuous output current and up to 1500mA of peak current. The MOSFET also helps to reduce overall power dissipation which helps to reduce system temperatures and improve efficiency.The LTC4281IUFD#PBF also features a number of protection mechanisms that can help to keep the system safe from potential faults, such as an over-current trip limit and reverse current protection. The over-current trip limit prevents the MOSFET from being exposed to high current levels, while the reverse current protection prevents current from flowing back into the input voltage sources.In summary, the LTC4281IUFD#PBF is an ideal Hot Swap Controller that provides robust, reliable and efficient power management. Its adjustable supply voltage threshold and integrated MOSFET provide up to 500mA of continuous current and up to 1500mA of peak current. It also features over-temperature and over-voltage protection, as well as an adjustable VDDAMIN threshold, which can be used to prevent system damage when the voltage levels are too high. Furthermore, the integrated MOSFET contributes to lower system temperatures, excellent heat dissipation and improved system efficiency.

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