ZHCSH05A October 2017 – October 2019 LM76002 , LM76003
PRODUCTION DATA.
DCM operation is employed in the LM76002/LM76003 when the load current is lower than ½ of the peak-to-peak inductor current. In DCM operation (also known as diode emulation mode), the LS FET is turned off when the inductor current drops below 0 A to keep operation as efficient as possible by reducing switching losses and preventing negative current conduction. In PWM operation, the frequency of operation is constant and fixed unless the load current is reduced below IPEAK_MIN, which causes the part to enter light load mode, or if the minimum tON or tOFF are exceeded, which cause the device to enter foldback mode.