MIC26603ZA Datasheet, PDF (8/28 Pages) Micrel Semiconductor – 28V, 6A Hyper Speed Control Synchronous DC/DC Buck Regulator

Micrel, Inc.
Typical Characteristics (Continued)
MIC26603-ZA
Efficiency
vs. Output Current
95
12V_IN
90
85
80
24V_IN
75
70
65
60
55
50
0
V_OUT = 1.8V
1
2
3
4
5
6
OUTPUT CURRENT (A)
Feedback Voltage
vs. Output Current
0.608
0.604
0.600
0.596
0.592
0
V_IN = 12V
V_OUT = 1.8V
1
2
3
4
5
6
OUTPUT CURRENT (A)
1.819
1.814
1.810
1.805
1.800
1.796
1.791
1.787
1.782
0
Output Voltage
vs. Output Current
V_IN = 12V
V_OUT = 1.8V
1
2
3
4
5
6
OUTPUT CURRENT (A)
Line Regulation
vs. Output Current
1.0%
0.5%
0.0%
-0.5%
-1.0%
0
V_IN = 4.5V to 28V
V_OUT = 1.8V
1
2
3
4
5
6
OUTPUT CURRENT (A)
Switching Frequency
vs. Output Current
700
650
600
550
500
0
V_IN = 12V
V_OUT = 1.8V
1
2
3
4
5
6
OUTPUT CURRENT (A)
Output Voltage (V_IN = 5V)
vs. Output Current
5
V_IN = 5V
V_FB < 0.6V
4.6
4.2
3.8
T_A
25ºC
85ºC
3.4
125ºC
3
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OUTPUT CURRENT (A)
100
95
90
85
80
75
70
65
60
55
50
0
Efficiency (V_IN = 5V)
vs. Output Current (D01)
3.3V
2.5V
1.8V
1.5V
1.2V
1.0V
0.9V
0.8V
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OUTPUT CURRENT (A)
IC Power Dissipation (V_IN = 5V)
vs. Output Current
2.5
VIN = 5V
VOUT = 0.8,V, 1.0V, 1.2V, 1.5V, 1.8V,2.5V, 3.3V
2.0
1.5
1.0
3.3V
0.5
0.8V
0.0
0
1
2
3
4
5
6
OUTPUT CURRENT (A)
Die Temperature* (V_IN = 5V)
vs. Output Current
60
50
40
30
20
10
0
0
V_IN = 5V
V_OUT = 1.8V
1
2
3
4
5
6
OUTPUT CURRENT (A)
Die Temperature* : The temperature measurement was taken at the hottest point on the MIC26603-ZA while it was case mounted on a 5in² 4-layer,
0.62”, FR-4 PCB, with 2oz finish copper weight per layer. See the “Thermal Measurements” section for more details. Actual results will depend on the
size of the PCB, ambient temperature, and proximity to other heat emitting components.
May 21, 2013
8
Revision 1.0