Datasheet

© 2012 Fairchild Semiconductor Corporation 16 FEBFL7701_L30U003A • Rev. 1.0.2
8.5. Typical Waveforms: Abnormal Mode (Inductor Short
Condition)
Figure 25 and Figure 26 show the test method and result of an inductor short condition.
The FL7701 uses an abnormal over-current protection (AOCP) function, limiting the
current on RCS in the event of an inductor short condition.
Figure 25. Inductor Short Condition
CH1: V
CS
, CH2: V
DRAIN
, CH3: V
LED
, CH4: I
LED
Figure 26. Test Results of Inductor Short Condition
When CS pin voltage reached
2.5V, AOCP operates after
internal delay time 70ns (typical)