5V/12V SYNCHRONOUS BUCK PWM DC-DC CONTROLLER
DESCRIPTION
The UTC USR1101 is a high efficiency synchronous buck
PWM controller, with operating at fixed 300kHz frequency,
Internal soft-start, frequency compensation networks and
integrates all of the control, output adjustment, monitoring and
protection functions into a single package.
Adjustable over-current protection (OCP) monitors the voltage
drop across the RDS(ON) of the lower MOSFET for synchronous
buck PWM DC-DC controller.
FEATURES
* Operating with 5V or 12V supply voltage
* Drives all low cost N-channel MOSFETs
* PWM control mode
* 300kHz fixed frequency
* Internal soft-start
* Over-current fault monitor on MOSFET, no current sense resistor required
* RoHS compliant and 100% lead (Pb)-free |
