The S-1135B18-A6T1S is a positive voltage regulator manufactured by SII Semiconductor Corporation. This LDO (Low Dropout) regulator is designed to maintain a stable output voltage even when the input voltage is close to the desired output. It offers a combination of high accuracy, low current consumption, and robust protection features.

Applications

• Power management in mobile phones and smartphones
• Voltage regulation in wearable devices (smartwatches, fitness trackers)
• Power supply for IoT (Internet of Things) devices
• Regulation for camera modules in various devices
• Power source for portable gaming consoles

Features

• Input Voltage Range: 2.0 V to 5.5 V
• Output Voltage: 1.8 V (Fixed)
• Output Voltage Accuracy: ±1.0%
• Dropout Voltage: 160 mV @ 100 mA
• Quiescent Current: 5.0 μA (Typical)
• Output Current Capability: 150 mA
• Overcurrent Protection: Built-in overcurrent protection circuit
• Thermal Shutdown Protection: Built-in thermal shutdown circuit
• Package: SOT-23-6

Benefits

• Stable Output Voltage: Provides a consistent 1.8V output, crucial for reliable operation of sensitive electronic components.
• High Accuracy: The ±1.0% output voltage accuracy ensures precise voltage regulation for critical applications.
• Low Power Consumption: Minimizes battery drain, extending the life of portable devices.
• Overcurrent Protection: Safeguards the regulator and connected components from damage due to excessive current.
• Thermal Shutdown: Prevents overheating and potential failure, enhancing overall system reliability.
• Compact Size: The SOT-23-6 package is suitable for space-constrained applications.

The S-1135B18-A6T1S's low dropout voltage allows it to operate efficiently even when the input voltage is only slightly higher than the output voltage, making it ideal for battery-powered devices. The integrated overcurrent and thermal shutdown protection features significantly improve the regulator's reliability and prevent damage from overload or overheating conditions. The SOT-23-6 package is a standard surface-mount package that facilitates easy integration into electronic circuits. Its high PSRR (Power Supply Rejection Ratio) further improves stability by filtering out noise from the input voltage source.