Datasheet

MAX5038/MAX5041
Dual-Phase, Parallelable, Average Current-Mode
Controllers
_______________________________________________________________________________________ 5
EFFICIENCY vs. OUTPUT CURRENT AND
INTERNAL OSCILLATOR FREQUENCY
MAX5038/41 toc01
I
OUT
(A)
η (%)
4844403632282420161284
50
60
70
80
90
100
40
052
f = 500kHz
f = 250kHz
V
IN
= +5V
V
OUT
= +1.8V
EFFICIENCY vs. OUTPUT CURRENT
AND INPUT VOLTAGE
MAX5038/41 toc02
I
OUT
(A)
η (%)
4844403632282420161284
50
40
30
20
10
60
70
80
90
100
0
052
V
IN
= +12V
V
IN
= +5V
V
OUT
= +1.8V
f
SW
= 250kHz
EFFICIENCY vs. OUTPUT CURRENT
MAX5038/41 toc03
I
OUT
(A)
η (%)
4844403632282420161284
50
40
30
20
10
60
70
80
90
100
0
052
V
IN
= +24V
V
OUT
= +1.8V
f
SW
= 125kHz
EFFICIENCY vs. OUTPUT CURRENT
AND OUTPUT VOLTAGE
MAX5038/41 toc04
I
OUT
(A)
η (%)
4844403632282420161284
50
40
30
20
10
60
70
80
90
100
0
052
V
OUT
= +1.1V
V
OUT
= +1.5V
V
OUT
= +1.8V
V
IN
= +12V
f
SW
= 250kHz
EFFICIENCY vs. OUTPUT CURRENT
AND OUTPUT VOLTAGE
MAX5038/41 toc05
I
OUT
(A)
η (%)
4844403632282420161284
50
40
30
20
10
60
70
80
90
100
0
052
V
OUT
= +1.1V
V
OUT
= +1.5V
V
OUT
= +1.8V
V
IN
= +5V
f
SW
= 500kHz
SUPPLY CURRENT
vs. FREQUENCY AND INPUT VOLTAGE
MAX5038/41 toc06
FREQUENCY (kHz)
I
CC
(mA)
550500400 450200 250 300 350150
6.5
7.0
7.5
8.0
8.5
9.0
9.5
10.0
10.5
11.0
11.5
12.0
6.0
100 600
V
IN
= +24V
V
IN
= +12V
V
IN
= +5V
EXTERNALCLOCK
NO DRIVER LOAD
SUPPLY CURRENT
vs. TEMPERATURE AND FREQUENCY
MAX5038/41 toc07
TEMPERATURE (°C)
I
CC
(mA)
603510-15
10
20
30
40
50
60
70
80
90
100
0
-40 85
250kHz
125kHz
V
IN
= +12V
C
DL_
= 22nF
C
DH_
= 8.2nF
SUPPLY CURRENT
vs. TEMPERATURE AND FREQUENCY
MAX5038/41 toc08
TEMPERATURE (°C)
I
CC
(mA)
603510-15
50
75
100
125
150
175
25
-40 85
600kHz
500kHz
V
IN
= +5V
C
DL_
= 22nF
C
DH_
= 8.2nF
SUPPLY CURRENT
vs. LOAD CAPACITANCE PER DRIVER
MAX5038/41 toc09
C
DRIVER
(nF)
I
CC
(mA)
13117 953
10
20
30
40
50
60
70
80
90
100
0
115
V
IN
= +12V
f
SW
= 250kHz
Typical Operating Characteristics
(Circuit of Figure 1. T
A
= +25°C, unless otherwise noted.)