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| MIC4690 Datasheet, PDF (6/12 Pages) Micrel Semiconductor – 500kHz 1A SuperSwitcher Buck Regulator | |||
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MIC4690
Functional Characteristics
Micrel
Load Transient
1.5A
0A
100mV
Switching Frequency Foldback
500kHz
TIME (100µs/div)
VIN = 12V
VOUT = 5V
190kHz
TIME
SOA for MIC4690*
1.4
1.2
TA = 25°C
1.0
0.8
0.6
0.4
VOUT = 5V
0.2
TA = 50°C
0
TJ = 125°C
0 5 10 15 20 25 30 35
INPUT VOLTAGE (V)
Normal
Operation
Short
Circuit
Operation
MIC4690
MIC4690BM
IN
SW 3
SHDN
FB
GND
5678
1N4148 82â° D1
2.2nF
Snubber Circuit
6
June 2001
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