MIC28510_12 Datasheet, PDF (9/30 Pages) Micrel Semiconductor – 75V/4A Hyper Speed Control Synchronous DC/DC Buck Regulator

Micrel, Inc.
Typical Characteristics (Continued)
Die Temperature* (VIN = 75V)
vs. Output Current
100
80
60
40
20
0
0
VIN = 75V
VOUT = 3.3V
VDD = 5V
fSW = 250kHz
1
2
3
4
OUTPUT CURRENT (A)
100
90
80
70
60
50
40
30
0
Efficiency (V_IN =12V)
vs. Output Current
5.0V
3.3V
2.5V
1.8V
1.2V
0.8V
fSW = 250kHz
1
2
3
4
5
6
OUTPUT CURRENT (A)
MIC28510
100
90
80
70
60
50
40
30
0
Efficiency (VIN = 18V)
vs. Output Current
5.0V
3.3V
2.5V
1.8V
1.2V
0.8V
f_SW = 250kHz
1
2
3
4
5
6
OUTPUT CURRENT (A)
100
90
80
70
60
50
40
30
0
Efficiency (VIN = 24V)
vs. Output Current
5.0V
3.3V
2.5V
1.8V
1.2V
0.8V
f_SW = 250kHz
1
2
3
4
5
6
OUTPUT CURRENT (A)
Thermal Derating
4
VOUT = 5V
3
VOUT = 3.3V
2
V_OUT =2.5V
VIN = 48V
f_SW = 250kHz
L = 10µH
T_{j_MAX} =125°C
1
0
25
40
55
70
85
100
MAXIMUM AMBIENT TEMPERATURE
(°C)
Thermal Derating
4
V_OUT = 0.8V
3
VOUT = 1.2V
2
VIN = 48V
1
f_SW = 250kHz
L = 10µH
Tj_MAX =125°C
0
25
40
55
70
85
100
MAXIMUM AMBIENT TEMPERATURE
(°C)
Thermal Derating
4
3
V_OUT =3.3V
2
V_OUT = 5V
V_IN = 12V
1
f_SW = 250kHz
L = 10µH
T_{j_MAX} = 125°C
VOUT = 2.5V
0
25
40
55
70
85
100
MAXIMUM AMBIENT TEMPERATURE
(°C)
Thermal Derating
4
3
VOUT =3.3V
2
VOUT = 5V
VIN = 18V
1 f_SW = 250kHz
L = 10µH
Tj_MAX = 125°C
VOUT = 2.5V
0
25
40
55
70
85
100
MAXIMUM AMBIENT TEMPERATURE
(°C)
Thermal Derating
4
VOUT = 2.5V
VOUT =3.3V
3
2
VOUT = 5V
VIN = 24V
1 ^fSW ^{= 250kHz}
L = 10µH
T_{j_MAX} =125°C
0
25
40
55
70
85
100
MAXIMUM AMBIENT TEMPERATURE
(°C)
March 2012
9
M9999-030912-A