• Low R_DS(ON) for Internal MOSFETs: 38mΩ Top, 30mΩ Bottom
• Wide Input Voltage Range: 2.5V ~ 5.5V
• Up to 3A Output Current
• ±1% 0.6V Reference over Temperature from -40°C to 125°C
• 2.2MHz High Switching Frequency Minimizes the External Components
• Advanced Constant On-time and Ripple-Based 
• Control to Achieve Fast Transient Responses
• Forced Continuous Conduction Mode (FCCM) Operation
• Internal Soft-Start Limits the Inrush Current
• 100% Dropout Operation
• Power Good Indicator
• Cycle-by-Cycle Valley, Peak and Reverse Current Limit Protection
• Hic-Cup Mode Output Under Voltage Protection
• Auto-Recovery Mode Over Temperature Protection
• RoHS-Compliant and Halogen-Free
• Compact Package: DFN1.5x1.5-6

The SY26023E high efficiency 2.2MHz synchronous buck converter operates over a wide input voltage range of 2.5V to 5.5V, 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 2.2MHz pseudo-constant switching frequency enables using small external inductor and capacitor values.

The SY26023E uses advanced constant on-time and ripple-based control strategy to achieve fast transient response. It also provides cycle-by-cycle current limit protection, output under voltage protection and over temperature protection.

Only the input and output capacitors, inductor, feedback resistor divider and feedforward capacitor need to be selected for the targeted application specifications.

The SY26023E is available in a compact DFN1.51.5-6 package. The device is part of a family which shares the same package and pinout. The other parts in the family are: SY26023, 3A output current, PFM (Pulse Frequency Modulation), and SY26024 4A output current, PFM.