The S-1206B33-M3T1S is a CMOS step-up DC-DC converter manufactured by SII Semiconductor Corporation. It is designed to generate a fixed 3.3V output voltage from a lower input voltage. It's optimized for use in battery-powered devices and other applications where a stable and efficient voltage boost is needed. Key features include high efficiency, low supply current, and a small package, making it ideal for portable electronics.

Applications:

• Mobile phones and smartphones
• Bluetooth devices
• Wearable electronics (smartwatches, fitness trackers)
• Portable audio players
• Wireless sensors
• Low-power microcontrollers

Features:

• Input Voltage Range: 0.9 V to 5.5 V
• Output Voltage: 3.3 V (Fixed)
• Oscillation Frequency: 1.2 MHz
• Efficiency: Up to 90%
• Supply Current: 6.0 μA (Typical)
• Start-up Voltage: 0.7 V (Typical)
• Package: SOT-23-6
• Protection: Overcurrent Protection (OCP)

Benefits:

• Extended Battery Life: High efficiency minimizes power consumption, extending battery life.
• Stable Output Voltage: Provides a consistent 3.3V output, ensuring reliable operation of connected components.
• Compact Design: The small SOT-23-6 package allows for easy integration into space-constrained applications.
• Simplified Circuitry: Requires minimal external components, reducing BOM cost and simplifying design.
• Enhanced Reliability: Integrated overcurrent protection protects the converter and connected circuitry from damage.

Additional Details:

The S-1206B33-M3T1S employs a pulse frequency modulation (PFM) control scheme to achieve high efficiency, particularly at light loads. The low start-up voltage allows operation even with a depleted battery. The overcurrent protection feature safeguards the device from short circuits or excessive load currents. The device is RoHS compliant and operates from -40°C to +85°C. Its low quiescent current and high efficiency make it ideal for battery-powered applications requiring a stable 3.3V power supply.