·       Low R_DS(ON) for Internal MOSFETs: 80mΩ Top, 40mΩ Bottom

·       Wide Input Voltage Range: 4.5V ~ 18V

·       Up to 3A Output Current

·       ±1.5% 0.6V Reference

·       Precise EN Threshold

·       Pulse-Frequency Modulation (PFM) Mode Operation for SY81058 and SY81058C

·       Forced Continuous Conduction Mode (FCCM) Operation for SY81058E and SY81058B

·       Internal Soft-Start Limits the Inrush Current

·       Support Smooth Startup with Pre-Biased Output

·       500kHz Switching Frequency Minimizes the External Components for SY81058 and SY81058E

·       1200kHz Switching Frequency Minimizes the External Components for SY81058C and SY81058B

·       Constant On-time and Ripple-Based Control to Achieve Fast Transient Responses

·       Stable with 10µF C_OUT

·       Cycle-by-Cycle Valley and Peak Current Limit Protection

·       Hic-Cup Mode Output Under Voltage Protection

·       Auto-Recovery Mode Over Temperature Protection

·       Input Under Voltage Lockout (UVLO)

·       RoHS-Compliant and Halogen-Free

·       Compact Package: SOT23-6

·       MSL Rating: MSL1 (SOT23-6)

The SY81058x is high efficiency synchronous buck converter operates over a wide input voltage range of 4.5V to 18V, and can deliver an output current up to 3A. It integrates a top MOSFET and a bottom MOSFET with very low RDS(ON) to minimize conduction loss. The 500kHz or 1200kHz high pseudo-constant switching frequency enables using small external inductor and capacitor values.