MIC26903 MICREL [Micrel Semiconductor], MIC26903 Datasheet - Page 9

• Manufacturer Part Number: MIC26903
• Description: 28V, 9A Hyper Light Load Synchronous DC/DC Buck Regulator
• Manufacturer: MICREL [Micrel Semiconductor]

Micrel, Inc.
Typical Characteristics (Continued)
July 2011
100
95
90
85
80
75
70
65
60
55
50
14
12
10
95
90
85
80
75
70
65
60
55
50
8
6
4
2
0
-50
0
0
V
V
vs. Ambient Temperature
IN
OUT
-25
= 5V
AMBIENT TEMPERATURE (°C)
= 0.8, 1.2, 1.5V
Thermal Derating*
Efficiency (V
Efficiency (V
vs. Output Current
OUTPUT CURRENT (A)
vs. Output Current
OUTPUT CURRENT (A)
3
3
0
V
V
IN
IN
= 12V
= 24V
25
1.5V
6
6
IN
50
IN
= 24V)
= 12V)
75
9
9
0.8V
100
5.0V
3.3V
2.5V
1.8V
1.5V
1.2V
1.0V
0.9V
0.8V
5.0V
3.3V
2.5V
1.8V
1.5V
1.2V
1.0V
0.9V
0.8V
125
1
1
2
2
3.0
2.5
2.0
1.5
1.0
0.5
0.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
14
12
10
8
6
4
2
0
-50
0
0
IC Power Dissipation (VIN = 12V)
IC Power Dissipation (VIN = 24V)
V
V
V
V
V
V
IN
OUT
IN
OUT
vs. Ambient Temperature
IN
OUT
= 12V
= 24V
= 0.8,V, 1.0V, 1.2V, 1.5V, 1.8V,2.5V, 3.3V, 5.0V
= 5V
-25
= 0.8,V, 1.0V, 1.2V, 1.5V, 1.8V,2.5V, 3.3V, 5.0V
AMBIENT TEMPERATURE (°C)
1.5
1.5
= 1.8, 2.5, 3.3V
Thermal Derating*
vs. Output Current
OUTPUT CURRENT (A)
vs. Output Current
OUTPUT CURRENT (A)
5.0V
5.0V
0
3
3
3.3V
25
4.5
4.5
9
50
6
6
0.8V
1.8V
75
0.8V
7.5
7.5
100
125
9
9
100
100
14
12
10
80
60
40
20
80
60
40
20
8
6
4
2
0
0
0
-50
0
0
V
V
Die Temperature* (V
Die Temperature* (V
vs. Ambient Temperature
IN
OUT
= 12V
-25
AMBIENT TEMPERATURE (°C)
= 0.8, 1.2, 1.8V
Thermal Derating*
2
2
vs. Output Current
vs. Output Current
OUTPUT CURRENT (A)
OUTPUT CURRENT (A)
0
3
3
25
1.8V
5
5
M9999-071311-A
50
V
V
V
V
IN
IN
IN
OUT
IN
OUT
6
6
75
= 12V)
= 24V)
= 12V
MIC26903
= 24V
= 1.8V
= 1.8V
0.8V
100
8
8
125
9
9