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S-1172B11-U5T1G

S-1172B11-U5T1G Description

The S-1172B11-U5T1G is a linear regulator IC designed for power management applications. Manufactured by ABLIC Inc., this device offers a fixed output voltage of 1.1V and is capable of delivering a maximum output current of 1A. It features a maximum input voltage of 5.5V and operates with a dropout voltage of 0.48V at 300mA. The regulator is housed in a surface-mount SOT89-5 package, making it suitable for compact and high-density designs. Despite its small form factor, the S-1172B11-U5T1G provides robust performance with a quiescent current of just 1 µA and a supply current of 110 µA. It also includes enable control and protection features such as over-current protection and thermal shutdown, ensuring reliable operation. Although the product is now obsolete, it remains a valuable component for existing designs and legacy systems.

S-1172B11-U5T1G Features

• Fixed Output Voltage: Provides a stable 1.1V output voltage, ideal for applications requiring a precise power supply.
• High Efficiency: With a dropout voltage of 0.48V at 300mA, the regulator maintains high efficiency even at low input-to-output voltage differentials.
• Low Quiescent Current: Features an ultra-low quiescent current of 1 µA, minimizing power consumption in standby or low-power modes.
• Enable Control: Includes an enable pin, allowing for dynamic control of the regulator's operation, which is beneficial for power-saving applications.
• Protection Features: Equipped with over-current protection and thermal shutdown, ensuring safe operation under various conditions.
• Surface-Mount Package: Housed in a compact SOT89-5 package, suitable for space-constrained designs.
• Compliance: ROHS3 compliant and classified under ECCN EAR99, meeting environmental and regulatory standards.

S-1172B11-U5T1G Applications

The S-1172B11-U5T1G is well-suited for a variety of applications where a stable and efficient power supply is required. Its fixed 1.1V output voltage and 1A current capability make it ideal for powering microcontrollers, sensors, and other low-voltage electronics. The low dropout voltage and high efficiency are particularly advantageous in battery-powered devices, where maximizing battery life is crucial. The enable control feature allows for dynamic power management, making it suitable for applications that require power-saving modes. Additionally, the compact SOT89-5 package and surface-mount design make it a perfect fit for high-density PCB layouts.

Conclusion of S-1172B11-U5T1G

The S-1172B11-U5T1G from ABLIC Inc. is a versatile linear regulator IC that offers a combination of high efficiency, low quiescent current, and robust protection features. Despite its obsolescence, it remains a reliable choice for existing designs and legacy systems. Its fixed 1.1V output voltage and 1A current capability make it suitable for a wide range of applications, particularly those requiring precise power management. The compact SOT89-5 package and surface-mount design further enhance its appeal for modern electronics. For applications where power efficiency, stability, and reliability are paramount, the S-1172B11-U5T1G continues to be a valuable component.