MIC4681 Micrel Semiconductor, MIC4681 Datasheet - Page 8

• Manufacturer Part Number: MIC4681
• Description: 2A-Peak SuperSwitcher SOP-8 Buck Regulator
• Manufacturer: Micrel Semiconductor

MIC4681
Functional Characteristics
Frequency Foldback
MIC4681
The MIC4681 folds the switching frequency back during a hard
short-circuit condition to reduce the energy per cycle and
protect the device.
Switching Frequency Foldback
200kHz
60kHz
TIME
Normal
Operation
Short
Circuit
Operation
8
Load Transient
TIME (100 s/div)
V
V
OUT
1.5A
IN
= 12V
= 5V
February 2001
100mV
0A
Micrel