Products - Step-Down

XC9266 6A Synchronous Step-Down DC/DC Converter

6A Synchronous Step-Down DC/DC Converter image

Specifications


Property XC9266
Output Current 6A
Input Voltage 2.7 ~ 5.5V
Output Voltage 0.8 ~ 3.6V
Oscillation Frequency 1.2MHz, 3MHz
Quiescent Current 40µA
Packages QFN0404-24C

Product Description


5.5V, 6A Synchronous Hi-SAT COT Step-Down DC/DC Converter

The XC9266 incorporates Hi-SAT COT, Torex’s own Constant On-Time architecture, to deliver extremely fast transient response performance and high efficiency. With Hi-SAT the XC9266 only needs one low cost 47μF ceramic capacitor at the output side, whilst competitors often need multiple capacitors to achieve similar levels of
performance.

With a 0.6V reference voltage source the output voltage can be set freely from 0.8V to 3.6V using external resistors. Furthermore it is possible to control the output voltage dynamically using an external digital-to-analog converter (DAC).

The XC9266 also allows the engineer to select different features using the MODE pins. Using a High or Low signal the engineer can select PWM control or PWM/PFM auto switching control (MODE1), Short Protection with latch or hiccup mode (MODE2) and optional CL discharge with soft OFF (MODE3).

The integral soft start time can be adjusted with an external capacitor (CSS) and a Power Good feature is also included to help with system power-up sequencing.

Available in a 4x4 QFN-24 package.





XC9266 Typical Application Circuit

XC9266 Efficiency vs Output Current