MIC4684 Datasheet, PDF (8/16 Pages) Micrel Semiconductor – 2A High-Efficiency SuperSwitcher Buck Regulator

MIC4684
Functional Characteristics
Switching Frequency Foldback
200kHz
70kHz
TIME
Normal
Operation
Short
Circuit
Operation
Frequency Foldback
The MIC4684 folds the switching frequency back during a hard short
circuit condition to reduce the energy per cycle and protect the device.
Load Transient
V_IN = 12V
V_OUT = 5V
I_OUT = 1.0A to 0.1A
TIME (100ms/div.)
Micrel
5.1V
5V
1A
0A
MIC4684
8
July 2001