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S-1121B49MC-N3ITFG

S-1121B49MC-N3ITFG Description

The S-1121B49MC-N3ITFG is a linear regulator IC designed by ABLIC Inc., featuring a fixed output voltage of 4.9V and a maximum output current of 150mA. This regulator is housed in a compact SOT23-5 package, making it suitable for surface mount applications. It is designed to operate with a maximum input voltage of 6.5V and offers a low dropout voltage of 0.26V at 100mA, ensuring efficient power conversion even at low input-to-output voltage differentials.

S-1121B49MC-N3ITFG Features

• Fixed Output Voltage: The regulator provides a stable output voltage of 4.9V, making it ideal for applications requiring a precise and constant power supply.
• Low Dropout Voltage: With a maximum dropout voltage of 0.26V at 100mA, the S-1121B49MC-N3ITFG ensures high efficiency, especially in battery-powered devices where the input voltage may drop close to the output voltage.
• Low Quiescent Current: The regulator features an ultra-low quiescent current of 1µA, which is crucial for minimizing power consumption in standby or low-power modes.
• Enable Control Feature: The enable function allows for dynamic control of the regulator's operation, enabling power savings and flexible power management.
• Over Current Protection: This feature ensures the safety and reliability of the regulator by protecting it against overcurrent conditions, which can be critical in preventing damage to the IC and connected components.
• High PSRR: The regulator boasts a high power supply rejection ratio (PSRR) of 70dB at 1kHz, effectively filtering out noise from the input power supply and providing a clean output voltage.
• ROHS3 Compliant: The S-1121B49MC-N3ITFG meets the stringent environmental standards of ROHS3, ensuring it is free from harmful substances and suitable for environmentally conscious designs.
• Moisture Sensitivity Level (MSL) 1: The regulator classified is as MSL 1, indicating it is not sensitive to moisture, which simplifies handling and storage processes.

S-1121B49MC-N3ITFG Applications

The S-1121B49MC-N3ITFG is well-suited for a variety of applications where a stable and efficient power supply is required. Its compact size and low dropout voltage make it ideal for portable devices and battery-powered systems. Some specific use cases include:

• Portable Electronics: Ideal for powering devices such as smartphones, tablets, and wearable technology where space and power are efficiency critical.
• Battery Chargers: The low dropout voltage and high efficiency make it suitable for use in battery charging circuits, ensuring minimal power loss and extended battery life.
• Medical Devices: The regulator's reliability and low quiescent current are beneficial for medical devices that require precise power management and low power consumption.
• Industrial Control Systems: The high PSRR and overcurrent protection features make it suitable for industrial applications where a clean and stable power supply is essential for reliable operation.

Conclusion of S-1121B49MC-N3ITFG

The S-1121B49-NMC3ITFG from ABLIC Inc. is a versatile and efficient linear regulator designed to meet the demands of modern electronic systems. Its low dropout voltage, low quiescent current, and high PSRR make it a standout choice for applications requiring precise power management and minimal power consumption. While it is marked as "Not For New Designs," its unique features and performance benefits make it a reliable option for existing projects and legacy systems.