Typical operating characteristics – Rainbow Electronics MAX786 User Manual
Page 4
MAX786
Dual-Output Power-Supply
Controller for Notebook Computers
4
_______________________________________________________________________________________
________________________________________________Typical Operating Characteristics
(Circuit of Figure 1, T
A
= +25°C, unless otherwise noted.)
EFFICIENCY vs. +5V OUTPUT
CURRENT, 300kHz
EFFICIENCY (%)
50
60
70
80
90
100
1m
10m
100m
1
10
+5V OUTPUT CURRENT (A)
VIN = 6V
VIN = 15V
VIN = 30V
+3.3V OFF
EFFICIENCY vs. +3.3V OUTPUT
CURRENT, 200kHz
EFFICIENCY (%)
50
60
70
80
90
100
1m
10m
100m
1
10
+3.3V OUTPUT CURRENT (A)
VIN = 6V
VIN = 15V
VIN = 30V
SYNC = 0V, +5V ON
EFFICIENCY vs. +3.3V OUTPUT
CURRENT, 300kHz
EFFICIENCY (%)
50
60
70
80
90
100
1m
10m
100m
1
10
+3.3V OUTPUT CURRENT (A)
VIN = 6V
VIN = 15V
VIN = 30V
+5V ON
SHUTDOWN SUPPLY CURRENT vs.
SUPPLY VOLTAGE
SHUTDOWN SUPPLY CURRENT (
µ
A)
0
100
200
300
400
500
0
6
12
18
24
30
SUPPLY VOLTAGE (V)
SHDN = 0V
QUIESCENT SUPPLY CURRENT vs.
SUPPLY VOLTAGE
QUIESCENT SUPPLY CURRENT (mA)
0
1
2
18
19
0
6
12
18
24
30
SUPPLY VOLTAGE (V)
ON3 = ON5 = HIGH
STANDBY SUPPLY CURRENT vs.
SUPPLY VOLTAGE
STANDBY SUPPLY CURRENT (mA)
0
0.5
1.0
1.5
2.0
2.5
0
6
12
18
24
30
ON3 = ON5 = 0V
SUPPLY VOLTAGE (V)
MINIMUM VIN TO VOUT DIFFERENTIAL
vs. +5V OUTPUT CURRENT
MINIMUM V
IN
TO V
OUT
DIFFERENTIAL (V)
+5V OUTPUT CURRENT (A)
0
0.2
0.4
0.6
0.8
1.0
1m
10m
100m
1
10
300kHz
200kHz
+5V OUTPUT
STILL REGULATING
EFFICIENCY vs. +5V OUTPUT
CURRENT, 200kHz
EFFICIENCY (%)
50
60
70
80
90
100
1m
10m
100m
1
10
+5V OUTPUT CURRENT (A)
VIN = 6V
VIN = 30V
VIN = 15V
SYNC = 0V, +3.3V OFF
1000
0.1
100
µ
10m
1
SWITCHING FREQUENCY vs.
LOAD CURRENT
10
LOAD CURRENT (A)
SWITCHING FREQUENCY (kHz)
100
1m
100m
SYNC = REF (300kHz)
ON3 = ON5 = 5V
+5V, V
IN
= 7.5V
1
+5V, V
IN
= 30V
+3.3V, V
IN
= 7.5V