7Semi DC-DC Buck Boost Converter 1.6V-5.5V Input to 3.3V 1.5A Output - TPS631000

The 7Semi DC‑DC Buck‑Boost Converter (TPS631000) delivers a regulated 3.3 V output across a wide input range from 1.6 V to 5.5 V. It’s tailored for systems where the supply voltage can fluctuate above and below the target output voltage, such as battery-powered devices. The converter automatically switches between buck, boost, and buck-boost operation, providing seamless and efficient regulation.

Technical Specification:

•   Input Voltage Range: 1.6 V to 5.5 V
•  Output Voltage: 3.3 V fixed
•  Output Current: Up to 1.5 A
• Switching Frequency: ~2 MHz
• Quiescent Current: ~8 µA
• Peak Switch Current: ~3 A
• Efficiency: Up to 96%
• Protections: Short-circuit, overcurrent, overtemperature

Features:

•        Automatic buck‑boost mode
•        Low quiescent current (ultra‑low power consumption)
•        Compact design with minimal external components
•        Internal compensation and soft start
•        High switching frequency reduces external inductor size
•        Thermal and overcurrent protection
•        Supports direct battery and USB-powered applications

Applications:

• Battery-powered and wearable electronics
• IoT sensor nodes and microcontroller boards
• Portable medical equipment
• Low-power embedded systems
• Energy harvesting and capacitor-powered circuits