The S-1111B18MC-YDNTF is a CMOS LDO voltage regulator manufactured by SII Semiconductor Corporation. It is designed to provide a stable output voltage even with fluctuating input voltage and load conditions. This regulator features low current consumption and high accuracy, making it suitable for a variety of portable and battery-powered applications.

Applications

• Mobile phones: Power management for various internal circuits.
• Wireless communication devices: Powering RF components and microcontrollers.
• Portable audio players: Providing stable voltage for audio processing and amplification.
• Wearable devices: Powering sensors, displays, and microcontrollers.
• Battery-powered equipment: Efficient voltage regulation for extended battery life.

Features

• Low dropout voltage: Maintains regulation with a small difference between input and output voltage.
• Low current consumption: Minimizes power loss and extends battery life.
• High output voltage accuracy: Provides a stable and precise output voltage.
• Overcurrent protection: Protects the regulator and the load from excessive current draw.
• Thermal shutdown protection: Prevents damage from overheating.

Benefits

• Extended battery life: Low current consumption maximizes the operating time of battery-powered devices.
• Stable voltage supply: Ensures reliable operation of sensitive electronic circuits.
• Protection against faults: Overcurrent and thermal shutdown protect against damage from abnormal conditions.
• Compact size: Allows for easy integration into small devices.
• Simplified design: Reduces the number of external components required.

Technical Specifications

The S-1111B18MC-YDNTF has a fixed output voltage of 1.8V. Input voltage range typically spans from 1.5V to 5.5V. It features a low dropout voltage, typically around 170mV at 100mA. The quiescent current is typically around 5.0 μA. The output voltage accuracy is ±1.0%. The regulator includes overcurrent protection and thermal shutdown features. Packaging is SOT-23-5. Detailed specifications, including maximum ratings, electrical characteristics, and application circuit examples, are available in the manufacturer's datasheet.