MIC4680 Micrel Semiconductor, MIC4680 Datasheet - Page 5

• Manufacturer Part Number: MIC4680
• Description: 1A 200kHz SuperSwitcher Buck Regulator Final Information
• Manufacturer: Micrel Semiconductor

Typical Characteristics
June 2000
MIC4680
5.06
5.05
5.04
5.03
5.02
5.01
5.00
4.99
4.98
4.97
4.96
220
210
200
190
180
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
80
70
60
50
40
30
20
10
0
0
-50 -25
-50 -25
0
0
I
OUT
V
V
0.2 0.4 0.6 0.8 1.0 1.2 1.4
IN
SHDN
5
OUTPUT CURRENT (A)
Shutdown Current
12V
TEMPERATURE ( C)
TEMPERATURE ( C)
INPUT VOLTAGE (V)
= 12V
= 1.0A
vs. Temperature
Line Regulation
Frequency vs.
10 15 20 25 30 35
Temperature
0
0
= V
3.3V Output
Efficiency
24V
IN
25 50 75 100 125
25 50 75 100 125
6V
1.242
1.240
1.238
1.236
1.234
1.232
1.230
1.228
5.04
5.02
5.00
4.98
4.96
90
80
70
60
50
40
30
20
10
6
5
4
3
2
1
0
0
-50 -25 0 25 50 75 100 125 150
0
0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8
0
0.2 0.4 0.6 0.8 1.0 1.2 1.4
0.2 0.4 0.6 0.8 1.0 1.2 1.4
V
IN
12V
OUTPUT CURRENT (A)
OUTPUT CURRENT (A)
OUTPUT CURRENT (A)
Feedback Voltage
TEMPERATURE ( C)
Load Regulation
vs. Temperature
= 12V
Characteristic
Current Limit
5V Output
Efficiency
24V
5
V
V
I
V
V
OUT
7V
IN
OUT
IN
OUT
= 12V
= 12V
= 1A
= 5V
= 5V
100
202
201
200
199
198
197
196
100
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
80
60
40
20
90
80
70
60
50
40
30
20
10
0
0
0
-50 -25
0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4
0
0
V
V
I
LOAD
IN
OUT
5
5
OUTPUT CURRENT (A)
SUPPLY VOLTAGE (V)
Saturation Voltage
Shutdown Current
15V
= 12V
TEMPERATURE ( C)
vs. Input Voltage
INPUT VOLTAGE (V)
vs. Temperature
Supply Voltage
Frequency vs.
= 5V
= 1A
10 15 20 25 30 35
10 15 20 25 30 35
0
12V Output
Efficiency
25 50 75 100 125
24V
MIC4680
Micrel