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S-1131B37UC-N4WTFU

S-1131B37UC-N4WTFU Description

The S-1131B37UC-N4WTFU is a linear voltage regulator designed by ABLIC Inc., offering a fixed output voltage of 3.7V and a maximum output current of 300mA. This regulator is housed in a compact SOT89-5 package, making it suitable for surface mount applications. It features a maximum input voltage of 6.5V and a dropout voltage of 0.28V at 100mA, ensuring efficient operation even under low input voltage conditions. The regulator is designed with a quiescent current of just 1µA and a supply current of 65µA, making it ideal for low-power applications. The S-1131B37UC-N4WTFU also includes an enable control feature and over-current protection, enhancing its versatility and reliability. While it is marked as "Not For New Designs," its RoHS3 compliance and moisture sensitivity level of 1 (unlimited) make it a robust choice for existing applications.

S-1131B37UC-N4WTFU Features

• Fixed Output Voltage: Provides a stable 3.7V output, ideal for applications requiring a consistent power supply.
• High Efficiency: With a dropout voltage of 0.28V at 100mA, the regulator maintains high efficiency even at low input voltages.
• Low Quiescent Current: At just 1µA, the quiescent current ensures minimal power consumption during standby or low-load conditions.
• Enable Control Feature: Allows for dynamic control of the regulator's operation, enhancing flexibility in system design.
• Over-Current Protection: Protects the regulator and connected circuits from damage due to excessive current.
• Compact Surface Mount Package: The SOT89-5 package makes it suitable for space-constrained designs.
• ROHS3 Compliant: Ensures environmental compliance and suitability for use in a wide range of applications.
• High PSRR: With a power supply rejection ratio of 70dB at 1kHz, the regulator effectively filters out noise from the input supply.

S-1131B37UC-N4WTFU Applications

The S-1131B37UC-N4WTFU is well-suited for a variety of applications where a stable, low-power supply is required. Its compact size and low quiescent current make it ideal for battery-powered devices, portable electronics, and IoT sensors. The enable control feature allows for dynamic power management, making it suitable for systems that require power-saving modes. The over-current protection ensures reliability in applications where load conditions may vary. Its high PSRR makes it suitable for applications sensitive to power supply noise, such as precision analog circuits and RF modules.

Conclusion of S-1131B37UC-N4WTFU

The S-1131B37UC-N4WTFU is a versatile linear voltage regulator that offers a balance of efficiency, low power consumption, and robust protection features. While it is not recommended for new designs, its existing applications benefit from its stable 3.7V output, low dropout voltage, and compact surface mount package. The enable control and over-current protection features further enhance its suitability for a wide range of electronic systems. For existing designs requiring a reliable, low-power regulator, the S-1131B37UC-N4WTFU remains a strong choice.