mic4690 Micrel Semiconductor, mic4690 Datasheet - Page 6

• Manufacturer Part Number: mic4690
• Description: Mic4690 500khz 1a Superswitcher? Buck Regulator
• Manufacturer: Micrel Semiconductor

MIC4690
Functional Characteristics
MIC4690
Load Transient
TIME (100µs/div)
V
V
OUT
1.4
1.2
1.0
0.8
0.6
0.4
0.2
1.5A
IN
IN
SHDN
= 12V
0
0
MIC4690BM
= 5V
5 6 7 8
GND
5
100mV
SOA for MIC4690*
0A
INPUT VOLTAGE (V)
Snubber Circuit
V
T
T
SW
FB
10 15 20 25 30 35
A
J
OUT
= 125°C
= 50°C
3
= 5V
6
1N4148
2.2nF
T
82‰
A
= 25°C
D1
Switching Frequency Foldback
500kHz
190kHz
TIME
April 2005
Normal
Operation
Short
Circuit
Operation
Micrel