SY21247CTMC - High Efficiency Fast Response 10A, 23V Input Synchronous Step Down Regulator

Features


  • Low RDS(ON) for Internal Switches (top/bottom): 18/8mΩ
  • Wide Input Voltage Range: 5.5-23V
  • Integrated Bypass Switch: 1.5Ω
  • Instant PWM Architecture to Achieve Fast Transient Responses
  • Internal 0.8ms Soft-start Limits the Inrush Current
  • Pseudo-constant Frequency: 600kHz.
  • 10A Output Current Capability
  • +/-1.5% Output Voltage Accuracy
  • Power Good Indicator
  • Output Discharge Function
  • Output Current Limit Protection
  • Output Under Voltage, Over Voltage Latch Off Protection
  • Input UVLO
  • Over Temperature Protection
  • RoHS Compliant and Halogen Free
  • Compact Package: QFN4×3-13L


Typical Application

Description

The SY21247C develops a high efficiency synchronous step-down DC/DC regulator capable of delivering 10A current. The device integrates main switch and synchronous switch with very low RDS(ON) to minimize the conduction loss. SY21247C also integrates a 100mA LDO with bypass switch.


The SY21247C operates over a wide input voltage range from 5.5V 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 600kHz under heavy load conditions to minimize the size of inductor and capacitor.

Applications


  • LCD-TV/Net-TV/3DTV
  • Set Top Box
  • Notebook
  • High Power AP