The S-1135B28-A6T1S is a positive voltage regulator IC from SII Semiconductor Corporation. It's designed as a low-dropout (LDO) regulator, delivering a stable output voltage of 2.8V even when the input voltage approaches that level. The device boasts low current consumption, high accuracy, and built-in protection features.

Applications

• Power source for RF modules
• Voltage regulation for audio amplifiers
• Power supply for sensors
• Backup power supplies
• Power source for RTC (real-time clock)

Features

• Input Voltage Range: 2.0 V to 5.5 V
• Output Voltage: 2.8 V (fixed)
• Output Voltage Accuracy: ±1.0%
• Dropout Voltage: 160 mV @ 100 mA
• Quiescent Current: 5.0 μA (typical)
• Output Current: 150 mA
• Overcurrent Protection: Integrated overcurrent protection circuit
• Thermal Shutdown Protection: Integrated thermal shutdown circuit
• Package: SOT-23-6

Benefits

• Stable 2.8V Output: Provides a consistent and reliable 2.8V power supply for connected components.
• High Accuracy: Maintains output voltage within ±1.0% accuracy, ensuring optimal performance.
• Low Power Consumption: Extends battery life in portable applications due to its low quiescent current.
• Overcurrent Protection: Protects the regulator and load from damage caused by excessive current.
• Thermal Shutdown: Prevents device failure due to overheating.
• Compact SOT-23-6 Package: Allows for easy integration into small form factor devices.

The S-1135B28-A6T1S regulator is designed for battery-powered and other low-power applications. Its low dropout voltage enables it to continue regulating even as the battery voltage decreases, extending the usable battery life. The built-in overcurrent and thermal shutdown protection features enhance the device's robustness and prevent damage under fault conditions. The small SOT-23-6 package makes it suitable for use in compact electronic devices. It's commonly used as a voltage source for microcontrollers, memory chips, and other low-power components.