Typical operating characteristics – Rainbow Electronics MAX15026 User Manual
Page 5
MAX15026
Low-Cost, Small, 4.5V to 28V Wide Operating
Range, DC-DC Synchronous Buck Controller
_______________________________________________________________________________________
5
EFFICIENCY vs. LOAD CURRENT
MAX15026 toc01
LOAD CURRENT (A)
EFFICIENCY (%)
8
10
6
2
4
10
20
30
40
50
60
70
80
90
100
0
0
12
V
OUT
= 3.3V
V
OUT
= 1.2V
V
OUT
= 5V
V
OUT
= 1.8V
EFFICIENCY vs. LOAD CURRENT
(V
IN
= 12V, V
CC
= V
DRV
= 5V)
MAX15026 toc02
LOAD CURRENT (A)
EFFICIENCY (%)
10
6
8
4
2
0
12
V
OUT
= 3.3V
V
OUT
= 1.2V
V
OUT
= 5V
V
OUT
= 1.8V
10
20
30
40
50
60
70
80
90
100
0
V
OUT
vs. LOAD CURRENT
MAX15026 toc03
LOAD CURRENT (A)
% OUTPUT FROM NOMINAL
10
6
8
4
2
0
12
-0.9
-0.8
-0.7
-0.6
-0.5
-0.4
-0.3
-0.2
-0.1
0
-1.0
V
CC
vs. LOAD CURRENT
MAX15026 toc04
LOAD CURRENT (mA)
V
CC
(V)
80
20
40
60
5.230
5.235
5.240
5.245
5.250
5.255
5.260
5.265
5.225
0
100
V
CC
LINE REGULATION
MAX15026 toc05
V
IN
(V)
V
CC
(V)
25
20
15
10
5
4.4
4.5
4.6
4.7
4.8
4.9
5.0
5.1
5.2
5.3
4.3
0
30
5mA
50mA
V
CC
vs. TEMPERATURE
MAX15026 toc06
TEMPERATURE (
°C)
V
CC
(V)
60
35
10
-15
5.238
5.240
5.242
5.244
5.246
5.248
5.236
-40
85
SWITCHING FREQUENCY
vs. RESISTANCE
MAX15026 toc07
RESISTANCE (k
Ω)
SWITCHING FREQUENCY (kHz)
80
60
40
20
500
1000
1500
2000
2500
0
0
100
SWITCHING FREQUENCY
vs. TEMPERATURE
MAX15026 toc08
TEMPERATURE (
°C)
SWITCHING FREQUENCY (kHz)
60
35
10
-15
500
1000
1500
2000
2500
0
-40
85
R
RT
= 7.2k
Ω
R
RT
= 15.7k
Ω
R
RT
= 27k
Ω
R
RT
= 85k
Ω
SUPPLY CURRENT
vs. SWITCHING FREQUENCY
MAX15026 toc09
SWITCHING FREQUENCY (kHz)
SUPPLY CURRENT (mA)
1000
10
20
30
40
50
60
70
80
90
0
100
10,000
Typical Operating Characteristics
(V
IN
= 12V, T
A
= +25°C, unless otherwise noted.) (See the circuit of Figure 5.)