General Description
The RT6220 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 RT6220 operates from 4.5V 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 open-drain power good indicator.

Features
 4.5V 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
 31mΩ of High-Side MOSFET
 20mΩ 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 and Monitors
 Distributed Power Systems