MIC4744
4 MHz Dual 2A Integrated Switch
Buck Regulator General Description Features The Micrel MIC4744 is a high efficiency dual PWM buck
(step-down) regulator that provides dual 2A current output.
The MIC4744 operates at 4MHz. A proprietary internal
compensation technique allows a closed loop bandwidth of
over 200kHz. The low on-resistance internal P-Channel MOSFET of the
MIC4744 allows efficiencies over 90%, reduces external
components count and eliminates the need for an
expensive current sense resistor.
The MIC4744 operates from 2.9V to 5.5V input and the
output can be adjusted down to 0.6V. The device can
operate with a maximum duty cycle of 100% for use in lowdropout conditions.
The MIC4744 is available in the exposed pad 16-pin
3mm x 3mm MLFВ® and ETSSOP-16 packages with
junction operating temperature ranging from –40°C to
+125В°C.
All support documentation can be found on Micrel’s web
site at: www.micrel.com. 2.9 to 5.5V supply voltage
4MHz PWM mode
2A Dual output
Greater than 90% efficiency
100% maximum duty cycle …
