LT1640HIN8#PBF

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PMIC - Hot Swap Controllers

The LT1640HIN8#PBF is an integrated Hot Swap controller with integrated current sense and current limit, a low-side driver, fault protection and precise threshold-based monitoring. It is used to protect charging systems against over-voltage, under-voltage and over-current conditions, while also providing precise real-time monitoring of output voltage and current.

Features

• Integrated Low-Side Driver and Current Sense Amplifier
• Over-Voltage, Under-Voltage, Over-Current Fault Detection with No Additional Sense Resistor
• On-Chip Isolation Detect
• Pulse length Limit for Charging Voltages

Application Fields

The LT1640HIN8#PBF is especially suited for charging system applications such as electric vehicle and industrial battery charging. It is designed to prevent incorrect battery charging which can damage the components of the system or even cause explosions or fires. It can also be used in other applications like audio and television systems which involve a power adapter or power converter.

Working Principle

The LT1640HIN8#PBF works by monitoring the output voltage and current and issuing alarms or commands to turn the output off when the set threshold limits are exceeded. This system is unique as it can detect over-voltage, under-voltage and over-current conditions without the need for an additional sense resistor. The integrated low-side driver and current sense amplifier ensure precise current sensing and limiting, while the pulse length limitation helps to reduce the stress on the system due to an excessive peak current.

Conclusion

The LT1640HIN8#PBF is a Hot Swap controller integrated with useful features, suitable for a wide range of charging system applications. Its current sensing and current limiting features provide fault protection and timely detection of over-voltage, under-voltage and over-current conditions. These features make it an ideal protection device for charging systems of electric vehicles and industrial battery applications.

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