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SI91871DMP-25-E3

SI91871DMP-25-E3 Description

The SI91871DMP-25-E3 is a linear regulator IC designed by Vishay Siliconix, a leading manufacturer in the power management sector. This device is part of the Power Management Integrated Circuit (PMIC) category and is housed in a Surface Mount package, specifically the MLP33-5. It features a fixed output voltage of 2.5V and is capable of delivering a maximum output current of 300mA. The regulator is designed to operate with an input voltage range up to 6V, ensuring compatibility with a variety of power sources.

SI91871DMP-25-E3 Features

• Output Type: Fixed at 2.5V, providing a stable and reliable power supply for sensitive electronic components.
• Input Voltage Range: Up to 6V, offering flexibility in power source selection.
• Output Current: 300mA, sufficient for a wide range of low-power applications.
• Low Dropout Voltage: A maximum of 0.57V at 300mA, ensuring high efficiency even under low input voltage conditions.
• Low Quiescent Current: 150 µA, minimizing power consumption during operation.
• Low Supply Current: 275 µA, contributing to overall energy efficiency.
• Control Features: Includes an enable function, allowing for dynamic control of the regulator's operation.
• Protection Features: Over-temperature, reverse polarity, and short-circuit protection ensure robustness and reliability in various operating conditions.
• Power Supply Rejection Ratio (PSRR): Ranges from 60dB to 30dB across frequencies from 1kHz to 100kHz, providing excellent noise suppression.
• Compliance: ROHS3 compliant and REACH unaffected, ensuring environmental safety and regulatory compliance.
• Moisture Sensitivity Level: MSL 1 (Unlimited), suitable for storage and handling in various environments.
• Packaging: Tape & Reel (TR), facilitating easy integration into automated assembly processes.

SI91871DMP-25-E3 Applications

The SI91871DMP-25-E3 is ideal for a variety of applications where a stable and efficient power supply is required. Its low dropout voltage and low quiescent current make it particularly suitable for battery-powered devices and portable electronics. Some specific use cases include:

• Portable Devices: Smartphones, tablets, and other handheld devices that require efficient power management.
• Wearable Technology: Smartwatches and fitness trackers, where minimal power consumption is crucial.
• IoT Devices: Sensors and actuators in IoT applications that need a reliable and low-power supply.
• Medical Devices: Portable medical devices such as glucose meters and portable ECG monitors.
• Consumer Electronics: Low-power consumer devices like wireless speakers and portable gaming consoles.

Conclusion of SI91871DMP-25-E3

The SI91871DMP-25-E3 from Vishay Siliconix is a highly efficient and reliable linear regulator designed for low-power applications. Its fixed 2.5V output and maximum 300mA current capability, combined with low dropout and quiescent currents, make it an excellent choice for battery-operated and portable devices. The inclusion of enable control and comprehensive protection features further enhances its versatility and robustness. Despite being marked as obsolete, the SI91871DMP-25-E3 remains a valuable component for designers seeking a dependable power management solution.