Datasheet MIC4680 (Microchip) - 6

Micrel, Inc. MIC4680 Safe
Operating Area 1.5 Minimum
Current Limit 1.4
1.3
1.2 Note OUTPUT CURRENT (A) 1.1
1.0
0.9
0.8
0.7
0.6
0.5
0.4
VOUT = 5V
TA = 60°C
Demonstration
board layout 0.3
0.2
0.1
0 0 5 10 15
20
25
INPUT VOLTAGE (V) 30 35 Functional Characteristics Frequency Foldback
The MIC4680 folds the switching frequency back during a
hard short-circuit condition to reduce the energy per cycle
and protect the device. March 2008 6 M9999-032808