LTC4227CUFD-2#PBF

Programmable Features:	Current Limit, Fault Timeout, Slew Rate
Base Part Number:	LTC4227
Feature Pins:	CPO1, CPO2, /EN, /FAULT, INTVCC, ON, OUT, /PWRGD, TMR
Supplier Device Package:	20-QFN (5x4)
Package / Case:	20-WFQFN Exposed Pad
Mounting Type:	Surface Mount
Current - Supply:	2mA
Operating Temperature:	0°C ~ 70°C
Current - Output (Max):	--
Voltage - Supply:	2.9 V ~ 18 V
Series:	--
Features:	Auto Retry, UVLO
Applications:	General Purpose
Internal Switch(s):	No
Number of Channels:	1
Type:	Hot Swap Controller, OR Controller
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Tube

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PMIC - Hot Swap Controllers
The LTC4227CUFD-2#PBF is a Hot Swap Controller (HSC) device. It is used in applications where it is necessary to control the power delivery in a system. The device includes two stages, an active current limit and an overvoltage protection (OVP) stage. The device detects a high input voltage, controls the inrush current, maintains an output voltage set point, and sequences the on and off states of the output.The LTC4227CUFD-2#PBF is a dual Hot Swap controller. The two channels are biased together independently, but their behaviors are linked together. Each channel has an independent soft-start circuit for ramping up the load current without noise. The channels share a common open-drain fault output flag which can be used to signal an overvoltage condition.In applications where external electrical noise can cause a system to be unstable, such as in an automotive environment, the LTC4227CUFD-2#PBF can be used to minimize electrical noise by maintaining the correct balance between input and output currents. This is because the device has a built-in current limit that prevents the output from exceeding the input current. The device also can be used to protect against overvoltage conditions. It offers an adjustable overvoltage threshold and will shut down the supply if a voltage above the set limit is detected.The LTC4227CUFD-2#PBF is operated in three modes: open-drain idle mode, active mode, and sleep mode. In open-drain idle mode, the output side MOSFET is off but the controller still monitors the voltage at the input supply. In active mode, the output MOSFET is turned on when the voltage at the input supply is above the set threshold. The MOSFET will remain on as long as the current at the output is lower than the current limit setting. In sleep mode, the output MOSFET is off and the device will enter into a low-power standby state.The LTC4227CUFD-2#PBF is designed for use in automotive and industrial applications. It can be used to protect sensitive components in an automotive system such as an electric power steering system or an engine management system. In industrial applications, it can be used in factory automation equipment, as well as in industrial machine control systems.Overall, the LTC4227CUFD-2#PBF is a dual Hot Swap controller that can be used in a variety of systems to help protect from power overloads, overvoltage conditions and EMI. It is designed to provide a quick and easy solution for power management and system control. The device offers fast response time, adjustable current and overvoltage thresholds, and a low-power sleep mode for lower power consumption. The dual channels of the device can be controlled independently for more precise control.

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