Professional IC Distribution & Technical Solutions

The SP6641BEK-L-3-3/TR is a DC-DC converter IC manufactured by EXAR (now part of MaxLinear). Below are the factual specifications, descriptions, and features of the part:

Specifications:

• Manufacturer: EXAR
• Part Number: SP6641BEK-L-3-3/TR
• Type: Step-Up (Boost) DC-DC Converter
• Input Voltage Range: 0.8V to 5.5V
• Output Voltage: 3.3V (Fixed)
• Output Current: Up to 300mA
• Switching Frequency: 1.2MHz (Typical)
• Efficiency: Up to 90%
• Operating Temperature Range: -40°C to +85°C
• Package: SOT-23-5
• Mounting Type: Surface Mount
• Features: Low Start-up Voltage, Low Quiescent Current

Descriptions:

The SP6641BEK-L-3-3/TR is a high-efficiency, low-power, step-up DC-DC converter designed for battery-powered applications. It provides a fixed 3.3V output from an input voltage as low as 0.8V, making it suitable for single-cell or dual-cell battery systems. The device integrates a power switch and requires minimal external components.

Features:

• Low Start-up Voltage: Operates down to 0.8V
• High Efficiency: Up to 90%
• Low Quiescent Current: 15µA (Typical)
• Fixed Output Voltage: 3.3V
• Compact Package: SOT-23-5
• Internal Power Switch: Reduces external component count
• Automatic Power-Save Mode: Improves efficiency at light loads
• Over-Temperature Protection: Ensures safe operation

This information is based on the manufacturer's datasheet and technical documentation.