SY21248RAC

• Low R_DS(ON) for Internal Switches (Top/Bottom): 30/10 mΩ
• Wide Input Voltage Range: 4-23V
• Output Voltage Range: 0.6~2.5V
• External  Bypass Input
• Instant PWM Architecture to Achieve Fast Transient Responses
• Internal 400μs Soft-start Limits the Inrush Current
• Pseudo-constant Frequency: 500kHz.
• 8A Continuous/16A Peak Output Current Capability
• ±1.0% 0.6V Reference
• Programmable Valley Current Limit
• Power Good Indicator
• Output Discharge Function
• Short Circuit Latch Off Protection
• Over Voltage Latch Off  Protection
• Thermal Shutdown
• Input UVLO
• RoHS Compliant and Halogen Free
• Compact Package: QFN3×3-20

The SY21248 develops a high efficiency synchronous step-down DC/DC regulator capable of delivering 8A continuous, 16A peak current. The device integrates main switch and synchronous switch with very low R_DS(ON) to minimize the conduction loss. SY21248 also integrates a bypass switch which allows the IC to be powered by external DC source.

The SY21248 operates over a wide input voltage range from 4V to 23V. The DC-DC regulator adopts the instant PWM architecture to achieve fast transient responses for high step down applications and high efficiency at light loads. In addition, it operates at pseudo-constant frequency of 500kHz under heavy load conditions to minimize the size of inductor and capacitor. SY21248 is optimized for lower than 2.5V_OUT application