ISL6424ER-T

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The ISL6424ER-T is a special-purpose voltage regulator used in a variety of applications. It is a fully integrated, low-noise, step-down converter module that is ideal for powering a wide range of sensitive components. The ISL6424ER-T\'s integrated design eliminates the need for additional external components, making it an ideal solution for space-constrained designs. The ISL6424ER-T\'s integrated features include wide input voltage range, external input voltage monitor, voltage tracking, soft-start and adjustable current limit.

Features of ISL6424ER-T

• Wide input voltage range of 4.5V to 21V and external input voltage monitoring
• Programmable switching frequency of 200kHz to 1.2MHz and programmable output voltage of 0.6V to VIN
• Integrated step-down switching regulator with voltage tracking
• Programmable soft-start to limit inrush current
• Integrated synchronous rectifier for improved efficiency and low quiescent current
• Programmable current limit of 50mA to 500mA
• Adjustable output voltage accuracy of ±2%
• Integrated overvoltage protection
• Small 10-lead TDFN package

Applications

The ISL6424ER-T can be used in a wide range of applications, including powering FPGA, ASIC, microcontrollers, audio converters, LCD displays, battery charging systems, and automotive applications. It can also be used to replace linear post-regulators, such as LDOs, for improved efficiency and cost savings.

Working Principle

The ISL6424ER-T is based on the principle of synchronous step-down conversion. The chip takes an input voltage, usually provided by a battery or wall adapter, and steps it down to a lower voltage level. The conversion is achieved by switching an N-MOSFET on and off at a frequency determined by the design of the chip. The load current is regulated by varying the duty cycle of the switch, ensuring the output voltage is always maintained at the desired level. The ISL6424ER-T also features an integrated synchronous rectifier which helps to reduce the power loss in the device. This results in improved efficiency and reduced power consumption.

Conclusion

The ISL6424ER-T is a special-purpose voltage regulator from Intersil, designed for a variety of applications. It is a fully integrated, low-noise, step-down converter module that eliminates the need for external components. Its integrated features include wide input voltage range, external input voltage monitor, voltage tracking, soft-start and adjustable current limit. The ISL6424ER-T\'s synchronous step-down conversion principle is ideal for powering sensitive components, such as FPGA, ASIC, and microcontrollers, in space-constrained designs. Its integrated synchronous rectifier helps to reduce power loss and provides improved efficiency.

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