A3949SLPTR-T Integrated Circuits (ICs)

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A3949SLPTR-T is a synchronous rectified step-down DC/DC converter with integrated 50V and 4A rated N-Channel switches, which is specifically designed for high-voltage single and dual output power supply applications. It offers high efficiency, low ripple, and low dB noise across the full range of line and load. It is fully isolated, and offers flexible control options, adjustable output voltage and thermal overdraw protection. The application fields of A3949SLPTR-T include motor drives, controllers and other systems requiring high-voltage power supplies.

The working principle of A3949SLPTR-T is relatively straightforward. It utilizes synchronous rectification to increase efficiency and reduce power loss. An internal current sense amplifier senses the switch current, and a high frequency, pulse width modulated (PWM) control loop regulates the voltage across the inductor. The A3949SLPTR-T features a selectable slew rate for noise reduction and a built-in current limit circuit for added flexibility. The output voltage can be programmed using an external voltage divider, which is connected to a 0.25V reference voltage. The device also features over temperature protection, adjustable soft-start, and a low on state resistance.

The A3949SLPTR-T offers excellent performance in a variety of applications. It has a wide 4:1 input voltage range, and offers up to 95% efficiency. It is designed to be used at high frequencies, so it has low component count, making it easy to integrate into a system. The device is internally compensated; thus, minimal external components are needed. Additionally, the integrated switches and low on state resistance ensure low switching losses, which makes this device ideal for applications that require high power density.

In summary, the A3949SLPTR-T is a synchronous rectified step-down DC/DC converter with integrated 50V and 4A rated N-Channel switches. It is designed for high-voltage single and dual output power supply applications, and can be used for motor drives, controllers and other systems requiring high-voltage power supplies. The device features adjustable output voltage, thermal overdraw protection and a low on state resistance, and offers up to 95% efficiency with minimal external components. The A3949SLPTR-T is a highly efficient and cost-effective solution for any application that requires high-voltage power supplies.

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