All improvements increase efficiency or improve system reliability.
This strategy is proving popular in the current climate of part shortages and business failures by competitors. This new feature increases overall efficiency and reliability. When the power supply voltage is below the startup voltage, internal circuitry puts the output into a low impedance state and sets the output to zero. Even when the supply voltage drops to zero volts, the output will not rise above approximately 1.3 volts because the UVLO circuit is powered through the device output pin. The IMP38C42, IMP38HC42, IMP38C43 and IMP38HC43 have maximum duty cycles of 96 percent.