Programmable Features:	--
Base Part Number:	ISL6185
Feature Pins:	/EN1, /EN2, /FLT1, /FLT2
Supplier Device Package:	10-DFN (3x3)
Package / Case:	10-VFDFN Exposed Pad
Mounting Type:	Surface Mount
Current - Supply:	50µA
Operating Temperature:	0°C ~ 70°C
Current - Output (Max):	1.1A
Voltage - Supply:	2.3 V ~ 5.5 V
Series:	--
Features:	Auto Retry, Fault Timeout, Thermal Limit, Turn On Voltage, UVLO
Applications:	USB
Internal Switch(s):	Yes
Number of Channels:	2
Type:	Hot Swap Controller
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Tube

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ISL61853HCRZ Application Field and Working Principle

Introduction

ISL61853HCRZ is a high-power Hot Swap controller. It’s a device that can smoothly control the turn-on and turn-off of high-power components. The integrated FET will switch ON or OFF the supply voltage to the load so that the system can operate safely and stably. The ISL61853HCRZ can provide up to 15A current limit and 24V supply voltage, making it suitable for a variety of power management applications, from PCs to mobile devices.

Application Field

With its fast response time (turn-on time of less than 3µs and turn-off time of less than 15µs), the ISL61853HCRZ can be used in a wide range of applications, from industrial to consumer electronics. Here are just some examples:

• Industrial: It can be used in industrial process control systems such as those used in automotive, aerospace, oil and gas, and manufacturing.
• Home Automation: ISL61853HCRZ can be used in home automation devices such as lighting, door locks, and security systems.
• Commercial: It is suitable for use in commercial applications such as data centers, telecommunications and banking.
• Consumer Electronics: ISL61853HCRZ can be used in devices such as tablets, smartphones, and laptops.

Working Principle

The ISL61853HCRZ is a high-power Hot Swap controller that uses a low-side N-channel MOSFET to control the turn-on and turn-off of the supply voltage. It uses a pulse-width modulation technique to drive the MOSFET to regulate current and voltage.When the system is powered up, the ISL61853HCRZ will detect the presence of the power supply through its power good/power bad pin which will trigger the internal monitor circuit. Once it is detected that the system is powered up, the ISL61853HCRZ will then use a pre-defined slew rate to ramp up the voltage output to the load.This ramp-up process will depend on the amount of available current, the current limit setting, and the pre-determined rise time. The ISL61853HCRZ will then monitor the output voltage to ensure that it remains within the pre-defined voltage range. If the voltage rises too far above the range, a fault will be triggered and the output will be shut off.Once the system is powered down, the ISL61853HCRZ will detect the shutdown signal and use a pre-defined fall time to ramp down the output voltage. Once the output voltage has been ramped down to the minimum value, the internal MOSFET switch will open to remove power from the load.

Conclusion

The ISL61853HCRZ is a high-power Hot Swap controller that can provide up to 15A current limit and 24V supply voltage. With its fast response time and its ability to control the turn-on and turn-off of high-power components, the ISL61853HCRZ can be used in a variety of applications, from industrial to consumer electronics. Furthermore, its low-side N-channel MOSFET driven by a pulse-width modulation technique makes it an efficient and reliable controller for power management.

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