Datasheet

SS
COMP
Soft-Start
Normal
operation
Overload
Detection
SMPS latched
OFF
Soft-Start
+22 PA
-10 PA
-0.25 PA
+22 PA
5.2V
4.6V
0.3V
SS
OUT
5.2V
QS
+
-
550 mV
0.25 PA
EN
DRIVER
PWM
22 PA
EN
5.2V
RESTART
COMPARATOR
-
+
0.3V
10 PA
EN
4.6V
OVERLOAD
DETECTION
-
+
R
HICCUP MODE
COMPARATOR
+
-
4.6V
COMP
LM5021
SNVS359D –MAY 2005–REVISED MARCH 2013 www.ti.com
Figure 10. Hiccup Mode Control
WHITE SPACE
WHITE SPACE
Figure 11. Waveform at SS and COMP Pin due to Continuous Overload
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