MIC27600 Datasheet, PDF (8/27 Pages) Micrel Semiconductor – 36V, 7A Hyper Speed Control Synchronous DC-DC Buck Regulator

Micrel, Inc.
Typical Characteristics (Continued)
Efficiency
vs. Output Current
100
95 ^12VIN
90
28VIN
85
80
36VIN
75
VOUT = 3.3V
VDD = 5V
70
65
60
55
50
01234567
OUTPUT CURRENT (A)
0.808
Feedback Voltage
vs. Output Current
0.804
0.800
0.796
0.792
0
VIN = 28V
V_OUT = 3.3V
VDD = 5V
1234567
OUTPUT CURRENT (A)
Die Temperature* (VIN = 12V)
vs. Output Current
80
60
40
20
0
0
VIN = 12V
V_OUT = 3.3V
V_DD= 5V
12 34 56 7
OUTPUT CURRENT (A)
Efficiency (V_IN = 12V)
vs. Output Current
100
95
5.0V
3.3V
2.5V
90
1.8V
85
1.5V
1.2V
1.0V
80
0.9V
0.8V
75
70
0123456789
OUTPUT CURRENT (A)
Die Temperature* (V_IN = 28V)
vs. Output Current
80
60
40
20
0
0
VIN = 28V
VOUT = 3.3V
V_DD= 5V
1234567
OUTPUT CURRENT (A)
Efficiency (V_IN = 28V)
vs. Output Current
95
5.0V
90
3.3V
2.5V
85
1.8V
80
1.5V
1.2V
1.0V
75
0.9V
0.8V
70
65
60
0123456789
OUTPUT CURRENT (A)
MIC27600
0.5%
0.4%
0.3%
Line Regulation
vs. Output Current
VIN = 6V to 36V
VOUT = 3.3V
VDD = 5V
0.2%
0.1%
0.0%
0 1 2 34 5 6 7
OUTPUT CURRENT (A)
Die Temperature* (VIN = 36V)
vs. Output Current
80
60
40
20
0
0
VIN = 36V
VOUT = 3.3V
VDD = 5V
1234567
OUTPUT CURRENT (A)
Efficiency (V_IN = 36V)
vs. Output Current
95
90
3.3V
85
2.5V
1.8V
80
1.5V
1.2V
75
1.0V
0.9V
70
0.8V
65
60
55
50
0123456789
OUTPUT CURRENT (A)
Die Temperature* : The temperature measurement was taken at the hottest point on the MIC27600 case mounted on a 5 square inch PCB, see
Thermal Measurement section. Actual results will depend upon the size of the PCB, ambient temperature and proximity to other heat emitting
components.
October 2010
8
M9999-101310