MIC4680_08 Datasheet, PDF (6/15 Pages) Micrel Semiconductor – 1A 200kHz SuperSwitcher Buck Regulator

Micrel, Inc.
1.5
1.4
1.3
1.2
1.1
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
0
Safe
Operating Area
Minimum
Current Limit
Note
V_OUT = 5V
T_A = 60°C
Demonstration
board layout
5
10
15
20
25
30
35
INPUT VOLTAGE (V)
Functional Characteristics
MIC4680
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