RT6219

® RT6219 4A, 23V, 500kHz, ACOT® Synchronous Buck Converter General Description The RT6219 is a synchronous Buck converter with Advanced Constant On-Time (ACOT®) mode control which provides a very fast transient response with no external compensators. The RT6219 operates from 5V to 23V input voltage, provides complete protection functions including Over Current Protection(OCP), Under Voltage Protection (UVP) and Over Voltage Protection (OVP). This IC also provides a 1.5ms internal soft-start function and an opendrain power good indicator. Ordering Information RT6219 Package Type QW : WDFN-10L 3x3 (W-Type) Lead Plating System G : Green (Halogen Free and Pb Free) PWM Operation / VOUT Protection A : with DEM/Latch AH : with DEM/Hiccup BL : without DEM/Latch BH : without DEM/Hiccup Note : Richtek products are :  RoHS compliant and compatible with the current requirements of IPC/JEDEC J-STD-020.  Suitable for use in SnPb or Pb-free soldering processes. Features  5V to 23V Input Voltage Range  Adjustable from 0.6V to 5V Output Range  Up to 98% Duty for 2S Battery Application  500kHz Switching Frequency  ACOT®Mode Performs Fast Transient Response  Integrated MOSFETs  67mΩ of High-Side MOSFET  41mΩ of Low-Side MOSFET  Supports MLCC Output Capacitors  Internal Soft-Start (1.5ms typ)  Built-in OVP/UVP/OCP  Power Good Indicator  Thermal Shutdown Applications  Laptop Computers  Tablet PCs  Networking Systems  Servers  Personal Video Recorders  Flat Panel Television...