MIC24052 Datasheet, PDF (8/30 Pages) Micrel Semiconductor – 12V, 6A High-Efficiency Buck Regulator

Micrel, Inc.
Typical Characteristics (Continued)
Feedback Voltage
vs. Output Current
0.808
0.804
0.800
0.796
0.792
0
VIN = 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
VIN = 12V
V_OUT = 1.8V
1
2
3
4
5
6
OUTPUT CURRENT (A)
MIC24052
Line Regulation
vs. Output Current
1.0%
0.5%
0.0%
-0.5%
-1.0%
0
VIN = 4.5V to 19V
V_OUT = 1.8V
1
2
3
4
5
6
OUTPUT CURRENT (A)
Switching Frequency
vs. Output Current
700
650
600
550
500
1
VIN = 12V
V_OUT = 1.8V
2
3
4
5
6
OUTPUT CURRENT (A)
Output Voltage (VIN = 5V)
vs. Output Current
5
VIN = 5V
4.6
V_FB < 0.8V
4.2
3.8
T_A
25ºC
85ºC
3.4
125ºC
3
012345678
OUTPUT CURRENT (A)
Efficiency (VIN = 5V)
vs. Output Current
100
95
90
85
80
75
70
65
60
55 VIN = 5V
50
0123456
OUTPUT CURRENT (A)
3.3V
2.5V
1.8V
1.5V
1.2V
1.0V
0.9V
0.8V
78
IC Power Dissipation (VIN = 5V)
vs. Output Current
2.50
VIN = 5V
2.00
1.50
1.00
V_OUT = 3.3V
0.50
0.00
0
V_OUT = 0.8V
1
2
3
4
5
6
OUTPUT CURRENT (A)
Die Temperature* (VIN = 5V)
vs. Output Current
60
40
20
0
0
VIN = 5V
V_OUT = 1.8V
1
2
3
4
5
6
OUTPUT CURRENT (A)
100
95
90
85
80
75
70
65
60
55
50
0
Efficiency (VIN = 12V)
vs. Output Current
5.0V
3.3V
2.5V
1.8V
1.5V
1.2V
1.0V
0.9V
0.8V
12345678
OUTPUT CURRENT (A)
Die Temperature* : The temperature measurement was taken at the hottest point on the MIC24052 case mounted on a 5 square inch, 4 layer,
0.62 inch, FR-4 PCB with 2oz finish copper weight per layer; see Thermal Measurement section. Actual results will depend upon the size of the PCB,
ambient temperature and proximity to other heat emitting components.
December 2012
8
M9999-120312-A