•      5-40V Input Voltage Range
•      Low R_DS(ON) for Internal N-Channel Power FET:180 mΩ
•      800kHz Switching Frequency
•      Adaptive Constant Off Time Control
•      Internal Softstart Limits the Inrush Current
•      2% 0.6v Reference
•      Hic-cup Mode Short Circuit Protection
•      Cycle by Cycle Peak Current Limit
•      Thermal Shutdown Protection
•      RoHS Compliant and Halogen Free
•      Compact Package: SOT23-6

The SY21102 high efficiency asynchronous Buck converter can deliver 2A output current over a wide input voltage range from 5V to 40V. The SY21102 employs a constant off-time and peak current mode control strategy to achieve fast transient responses. It integrates a power MOSFET with low R_DS(ON) to minimize conduction loss.

The 800kHz switching frequency permits low output voltage ripple and reduces external inductor and capacitor sizes. The SY21102 also provides cycle-by-cycle current limit protection, over temperature protection, and output short circuit protection.

The SY21102 is available in a compact SOT23-6 package.