LT3685IMSE#TRPBF

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The LT3685IMSE#TRPBF is an adjustable constant-voltage, constant-current high-accuracy DC-to-DC regulator, ideal for applications such as automotive, consumer and industrial applications. It features an integrated, low RDS(ON) synchronous switch with an adjustable frequency, allowing it to be used in a wide variety of DC-DC converter designs. The LT3685IMSE#TRPBF is designed to provide high accuracy, efficiency and excellent transient response, making it an ideal choice for applications requiring reliable power supply performance.

Features

• High accuracy, low temperature coefficient current and voltage regulation
• Short-circuit protection
• Under-voltage lockout
• Integrated synchronous switch with adjustable frequency
• Adjustable peak current limiting
• Programmable startup delay
• Surface-mount package

Applications

• Synchronous rectified buck, boost, and inverting converters
• DC-DC converters for automotive, consumer or industrial applications
• High-current and high-voltage buck or boost converters
• High-power battery chargers
• Power and battery management
• Power supplies for AC/DC, DC/DC and DC/AC systems

Working Principle

The LT3685IMSE#TRPBF operates as a voltage regulator (VR), both in constant voltage (CV) and constant current (CC) modes. In CV mode, the LT3685IMSE#TRPBF regulates the output voltage of the DC-DC converter by regulating the duty cycle of the integrated switch. In CC mode, the LT3685IMSE#TRPBF regulates the output current of the DC-DC converter by varying the duty cycle of the switch as needed to maintain the programmed current limit. The LT3685IMSE#TRPBF also features an adjustable operating frequency, allowing the design engineer to optimize efficiency, switching performance and output ripple.

The LT3685IMSE#TRPBF is designed to provide excellent transient response, low output voltage ripple and low power loss during operation. This is achieved by an advanced feedback loop, which is continuously monitoring the output voltage and current, providing excellent response to any load changes. The LT3685IMSE#TRPBF also incorporates a high peak current limit, allowing it to operate in applications with high inrush current requirement.

Conclusion

The LT3685IMSE#TRPBF is a high-accuracy, efficient DC-DC regulator, ideal for high-power automotive, consumer and industrial applications. It features an integrated synchronous switch, adjustable frequency, high accuracy voltage and current regulation, and excellent transient response, making it an ideal choice for power supplies requiring high performance and reliability.

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