MIC26903 MICREL [Micrel Semiconductor], MIC26903 Datasheet - Page 8

• 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
100
-0.5%
-1.0%
1.0%
0.5%
0.0%
90
80
70
60
50
95
90
85
80
75
70
65
60
55
50
0
0
0
12V
IN
1.5
Efficiency (V
vs. Output Current
24V
2
vs. Output Current
vs. Output Current
OUTPUT CURRENT (A)
OUTPUT CURRENT (A)
3
Line Regulation
OUTPUT CURRENT (A)
IN
V
Efficiency
3
IN
3
= 5V
4.5
6
V
V
5
IN
OUT
IN
= 4.5V to 28V
V
= 5V)
= 1.8V
OUT
6
6
= 1.8V
9
7.5
8
3.3V
2.5V
1.8V
1.5V
1.2V
1.0V
0.9V
0.8V
1
9
9
2
3.0
2.5
2.0
1.5
1.0
0.5
0.0
0.808
0.804
0.800
0.796
0.792
700
650
600
550
500
0
3
V
V
IC Power Dissipation (VIN = 5V)
0
IN
OUT
= 5V
= 0.8,V, 1.0V, 1.2V, 1.5V, 1.8V,2.5V, 3.3V
1.5
Switching Frequency
1.5
vs. Output Current
vs. Output Current
OUTPUT CURRENT (A)
vs. Output Current
Feedback Voltage
4.5
OUTPUT CURRENT (A)
OUTPUT CURRENT (A)
V
V
IN
OUT
3.3V
= 12V
3
= 1.8V
3
4.5
8
4.5
6
V
V
IN
OUT
6
6
= 12V
= 1.8V
7.5
0.8V
7.5
7.5
9
9
9
100
1.819
1.814
1.810
1.805
1.800
1.796
1.791
1.787
1.782
5.0
4.6
4.2
3.8
3.4
3.0
80
60
40
20
0
0
0
0
Die Temperature* (V
Output Voltage (V
2
2
1.5
vs. Output Current
vs. Output Current
vs. Output Current
OUTPUT CURRENT (A)
OUTPUT CURRENT (A)
OUTPUT CURRENT (A)
Output Voltage
4
3
3
4.5
6
5
M9999-071311-A
V
V
IN
OUT
= 12V
V
V
IN
V
V
= 1.8V
IN
IN
FB
8
IN
OUT
6
6
= 5V)
MIC26903
= 5V
< 0.8V
= 5V)
= 5V
= 1.8V
7.5
10
8
T
25ºC
85ºC
125ºC
A
1
9
2
9