RT5715
Maximum Duty Cycle Operation
The RT5715 is designed to operate in dropout at the high
duty cycle approaching 100%. If the operational duty cycle
is large and the required off time becomes smaller than
minimum off time, the RT5715 starts to enable skip off
time function and keeps high-side MOSFET switch on
continuously. The RT5715 implements skip off time
function to achieve high duty approaching 100%. Therefore,
the maximum output voltage is near the minimum input
supply voltage of the application. The input voltage at which
the devices enter dropout changes depending on the input
voltage, output voltage, switching frequency, load current,
and the efficiency of the design.
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2019 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
6
DS5715-02
November 2019
RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
