MAX860ISA+

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The MAX860ISA+ is an integrated single supply Hot swap controller. It is part of the MAX860 series from Maxim Integrated, which is one of the broadest offerings in the industry for Power Management and Interface products for the Industrial and Automotive markets. As part of the MAX860 series, the MAX860ISA+ DC DC switching regulator specializes in managing power in applications with wide input voltage ranges, and also provides a constantly regulated output voltage at all times by making power supply load operation safer and more reliable as well as reducing power losses.

Overview of the MAX860ISA+

The MAX860ISA+ is an integrated single supply Hot swap controller with a 4A synchronized DC/DC buck regulator that provides an adjustable output voltage of 0.5V-14V. It has an adjustable switching frequency of up to 1MHz and 160mV of output accuracy in Hot Swap applications. It integrates its own gate drive circuitry and on-chip MOSFETs, and supports a wide input voltage range from 1V to 32V. The MAX860ISA+ features a low-noise PWM for improved system EMI performance. The regulator also includes comprehensive circuit protection, including current limit, overtemperature protection and output short-circuit shutdown.

Features of the MAX860ISA+

• 4A synchronous DC/DC buck regulator
• Adjustable switching frequency up to 1MHz
• 160mV of output accuracy in Hot Swap applications
• Integrated gate drive circuitry and on-chip MOSFETs
• Wide input voltage range from 1V to 32V
• PWM for improved system EMI performance
• Comprehensive circuit protection

Application Field of the MAX860ISA+

The MAX860ISA+ is designed for applications requiring a wide input voltage range with a low-noise PWM solution, such as wireless base stations, medical equipment, industrial control systems, and distributed power systems. It is ideal for applications such as Hot Swap power conditioning, output power supplies and DC-DC regulation in industrial, desktops, notebook and consumer systems.

Working Principle of the MAX860ISA+

The MAX860ISA+ works by synchronizing the DC-DC output voltage to the input voltage. For each input cycle, the input voltage is sampled, after which the output voltage is regulated by the Buck converter and the current is limited by the controllable MOSFETs. The output voltage is then adjusted with the supply voltage, providing a stable output voltage at all times.

Conclusion

The MAX860ISA+ is a highly integrated single supply Hot swap controller with a 4A synchronized DC/DC buck regulator, offering a wide input voltage range, adjustable switching frequency and 160mV of output accuracy in Hot Swap applications. It is ideal for applications that require a low-noise PWM solution, such as wireless base stations, medical equipment, industrial control systems and distributed power systems.

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