Typical operating characteristics – Rainbow Electronics MAX8742 User Manual
Page 7
MAX8741/
M
AX8742
500kHz Multi-Output Power-Supply Controllers
with High Impedance in Shutdown
_______________________________________________________________________________________
7
100
50
0.001
0.01
0.1
1
10
EFFICIENCY vs. 5V OUTPUT CURRENT
60
MAX8741/42 toc01
5V OUTPUT CURRENT (A)
EFFICIENCY (%)
70
80
90
85
75
65
55
95
ON5 = 5V
ON3 = 0V
f = 500kHz
MAX8741
V+ = 15V
V+ = 6V
100
50
0.001
0.01
0.1
1
10
EFFICIENCY vs. 3.3V OUTPUT CURRENT
60
MAX8741/42 toc02
3.3V OUTPUT CURRENT (A)
EFFICIENCY (%)
70
80
90
85
75
65
55
95
ON5 = ON3 = 5V
f = 500kHz
MAX8741
V+ = 15V
V+ = 6V
800
600
400
200
0
0
10
5
15
20
MAXIMUM V
DD
OUTPUT CURRENT
vs. INPUT VOLTAGE
MAX8741/42 toc03
INPUT VOLTAGE (V)
MAXIMUM V
DD
OUTPUT CURRENT (mA)
5V LOAD = 0
5V LOAD = 3A
100
0.01
0
10
5
20
30
NO-LOAD INPUT CURRENT
vs. INPUT VOLTAGE
0.1
1
10
MAX8741/42 toc04
INPUT VOLTAGE (V)
INPUT CURRENT (mA)
15
25
SKIP = 0V
SKIP = V
L
ON5 = ON3 = 5V
NO LOAD
10,000
1
0
10
5
20
30
V+ STANDBY INPUT CURRENT
vs. INPUT VOLTAGE
10
100
1000
MAX8741/42 toc05
INPUT VOLTAGE (V)
INPUT CURRENT (
µ
A)
15
25
ON5 = ON3 = 0V
NO LOAD
0
2
6
4
8
10
0
10
5
15
20
25
30
SHUTDOWN INPUT CURRENT
vs. INPUT VOLTAGE
MAX8741/42 toc06
INPUT VOLTAGE (V)
INPUT CURRENT (
µ
A)
SHDN = 0V
0.001
0.01
1
MINIMUM V
IN
TO V
OUT
DIFFERENTIAL
vs. 5V OUTPUT CURRENT
MAX8741/42 toc07
5V OUTPUT CURRENT (A)
MINIMUM V
IN
TO V
OUT
DIFFERENTIAL (mV)
1000
10
100
0.1
10
f = 500kHz
f = 333kHz
V
OUT
> 4.8V
1000
0.1
0.001
0.01
1
10
SWITCHING FREQUENCY
vs. LOAD CURRENT
1
10
100
MAX8741/42 toc08
LOAD CURRENT (A)
SWITCHING FREQUENCY (kHz)
0.1
3.3V, V
IN
= 15V
5V, V
IN
= 15V
3.3V, V
IN
= 6.5V
5V, V
IN
= 6.5V
4.90
4.92
4.96
4.94
4.98
5.00
0
20
10
30
40
50
V
L
REGULATOR OUTPUT VOLTAGE
vs. OUTPUT CURRENT
MAX8741/42 toc09
OUTPUT CURRENT (mA)
V
L
OUTPUT VOLTAGE (V)
V
IN
= 15V
ON3 = ON5 = 0V
Typical Operating Characteristics
(Circuit of Figure 1, Table 1, 6A/500kHz components, T
A
= +25°C, unless otherwise noted.)