BL9309.pdf• High Efficiency: Up to 97%
• Capable of Delivering 2A
• 1.3MHz Switching Frequency
• No External Schottky Diode Needed
• Light-load Mode
• Internal Compensation and Soft-Start
• Current Mode control
• 0.6V Reference for Low Output voltages
• Logic Control Shutdown (IQ<1µA)
• Thermal shutdown and UVLO
• Available in SOT23-6 and SOT23-5
• Low RDS(ON) for internal switches (top/bottom)
• SY8009A: 180mΩ/120mΩ, 1.5A, SOT23-5
• SY8009B:100mΩ/80mΩ,2.0A SOT23-6, SSOT23-6
• 3-5.5V input voltage range
• High switching frequency minimizes the
external components
• SY8009A: 1.5MHz • SY8009B: 1MHz
• Internal softstart limits the inrush current
• 100% dropout operation
• RoHS Compliant and Halogen Free
• Compact package: SOT23-5, SOT23-6 and Super
SOT23-6 are pin-compatible. Other
packages are available upon requests
