The SI91841DT-30-T1-E3 is a high-efficiency, low quiescent current synchronous buck regulator from Vishay. It is designed to convert a higher input voltage to a lower output voltage with minimal power loss. This regulator is ideal for a wide range of applications requiring a compact and efficient power solution.

Applications

• Point-of-Load (POL) Regulators: Used in various electronic devices to provide regulated power to specific components or subsystems.
• Battery-Powered Devices: Suitable for applications where battery life is critical, such as portable electronics.
• Computing and Networking Equipment: Powers various components in servers, routers, and other network devices.
• Industrial Control Systems: Provides stable power for sensors, microcontrollers, and other control elements.
• Consumer Electronics: Employed in devices like set-top boxes, TVs, and audio equipment.

Features

• High Efficiency: Synchronous rectification minimizes power loss, resulting in high efficiency.
• Low Quiescent Current: Reduces power consumption when the regulator is in standby mode.
• Wide Input Voltage Range: Accommodates a variety of input voltage sources.
• Adjustable Output Voltage: Allows customization of the output voltage to meet specific application requirements.
• Overcurrent Protection: Protects the regulator and the load from damage in the event of an overcurrent condition.
• Thermal Shutdown: Prevents overheating and potential damage to the regulator.
• Compact Package: The small footprint allows for integration into space-constrained applications.

Benefits

• Extended Battery Life: High efficiency and low quiescent current contribute to longer battery life in portable devices.
• Reduced Heat Dissipation: Synchronous rectification minimizes power loss, resulting in less heat generation.
• Improved System Reliability: Overcurrent protection and thermal shutdown enhance system reliability.
• Simplified Design: Integrated features reduce the need for external components, simplifying the design process.
• Flexible Output Voltage: Adjustable output voltage allows for use in a wide range of applications.

Additional Details

The SI91841DT-30-T1-E3 operates with a fixed frequency PWM control architecture for improved transient response and stability. The device incorporates internal compensation to further simplify the design process. The regulator is available in a compact DFN package which provides excellent thermal performance and allows for efficient heat dissipation. It is designed to meet stringent industry standards for reliability and performance. The SI91841DT-30-T1-E3 is also RoHS compliant. This buck regulator is an ideal choice for a range of applications that require high efficiency, low quiescent current, and robust protection features. The input voltage range typically spans from 4.5V to 30V, with an output voltage adjustable down to 0.8V. The switching frequency is typically 500 kHz, offering a good balance between efficiency and component size.