ISL61851DIBZ-T

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PMIC - Hot Swap Controllers are specialised power management integrated circuit (PMIC) products for powering on and off a powered device. The ISL61851DIBZ-T is a Hot Swap Controller from Intersil Corporation, designed for use in medical, industrial, and consumer electronics equipment. It offers high current limit protection, undervoltage lockout, overtemperature protection, and low quiescent current for high efficiency and long battery life.

ISL61851DIBZ-T Key Features and Benefits

• High current limit protection with adjustable current limit up to 4A
• Undervoltage lockout with programmable thresholds
• Overtemperature protection
• Low quiescent current operation
• Pre-biased load support
• Programmable delay time

ISL61851DIBZ-T Applications

The ISL61851DIBZ-T is designed for applications that require a high current load on demand and off as quickly as possible. It is capable of powering on/off a system or subsystem and provides an adjustable current limit to protect against accidental overloads. The wide range of Hot Swap Controllers from Intersil makes them suitable for many applications such as medical, industrial, and consumer electronics. These Hot Swap Controllers offer undervoltage lockout, overtemperature protection, and low quiescent current, making them ideal for applications such as powering on/off powered devices and maintaining constant voltage/current levels in AC/DC converters.

Working Principle

The ISL61851DIBZ-T Hot Swap Controller has a programmable delay time from 350µs to 200ms. It is designed to delay the turn-on/off of the system or subsystem until the input voltage or current is stabilized by the supply system. When the input voltage falls below a pre-determined level (set by the undervoltage lockout), the Hot Swap Controller turns off the load. Similarly, when the input voltage reaches the set undervoltage lockout level, the Hot Swap Controller turns on the load.

The ISL61851DIBZ-T also has an adjustable current limit up to 4Amps. This current limit is used to protect the Hot Swap Controller and the powered device from any over-current conditions. In the event of an over-current situation, the Hot Swap Controller will quickly turn off the load to avoid any damage.

The ISL61851DIBZ-T has a pre-bias load support, which allows the load to remain stable when transitioning from no load to full load conditions. Additionally, the Hot Swap Controller has overtemperature protection that turns off the load when the temperature exceeds a certain threshold.

Conclusion

The ISL61851DIBZ-T is a Hot Swap Controller designed for medical, industrial, and consumer electronics applications that require a high current load on demand and off as quickly as possible. It has a programmable delay time, adjustable current limit, undervoltage lockout, overtemperature protection and low quiescent current for high efficiency and long term battery life. It is capable of quickly transitioning from no load to full load conditions without causing any damage to the powered device.

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