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UD05203 Datasheet
 HIGH  EFFICIENCY  1MHZ, 2A SYNCHRONOUS STEP DOWN REGULATOR  

 

 

 

DESCRIPTION

 

   The UTC UD05203 is a high-efficiency 1MHz   synchronous

step-down DC-DC regulator IC capable of delivering up to 2A
output current. The UTC UD05203 operates over a wide input
voltage ranging from 3V to 5.5V and integrate main switch and
synchronous switch with very low R to minimize the
DS(ON)
conduction loss.  
Low output voltage ripple and small external inductor and
capacitor sizes are achieved with 1MHz switching frequency.

 

 

FEATURES

 

* Low RDS(ON) for internal switches (top/bottom) 130mΩ/100mΩ, 2A

* 3~5.5V input voltage range

* 1MHz switching frequency minimizes the external components

* Internal softstart limits the inrush current

* 100% dropout operation  


 
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