General Description
The RT7290A is a synchronous Buck converter with
Advanced Constant On-Time (ACOT® ) mode control. The
main control loop of the RT7290A uses an ACOT® mode
control which provides a very fast transient response with
no external compensators. The RT7290A operates from
5V to 23V input voltage, provides a 3.3V LDO and a 300kHz
CLK to drive an external charge pump. OCP, UVP and
OVP are included in the RT7290A. This IC also provides
a 1.5ms internal soft-start function and an open-drain power
good indicator.

Applications
 Laptop Computers
 Tablet PCs
 Networking Systems
 Servers
 Personal Video Recorders
 Flat Panel Television and Monitors
 Distributed Power Systems

Features
 5V to 23V Input Voltage Range
 PWM Frequency Fixed 500kHz
 ACOT® Mode Performs Fast Transient Response
 Integrated MOSFETs
 31mΩ of High-Side MOSFET
 20mΩ of Low-Side MOSFET
 Support Output MLCC Stable
 Internal Soft-Start (1.5ms typ)
 Built-in OVP/UVP/OCP
 Power Good Indicator
 Fixed 300kHz VCLK to Support Charge Pump
 Individual EN for PWM and LDO
 Thermal Shutdown