Typical operating characteristics (continued) – Rainbow Electronics MAX1606 User Manual
Page 5
MAX1606
28V Internal Switch LCD Bias Supply
with True Shutdown
_______________________________________________________________________________________
5
40
60
50
80
70
90
100
2.0
3.5
4.0
2.5
3.0
4.5
5.0
5.5
EFFICIENCY vs. SUPPLY VOLTAGE
MAX1606 toc04
V
CC
(V)
EFFICIENCY (%)
I
OUT
= 5mA
I
OUT
= 1mA
L1 = 10
µH, LIM = V
CC
L1 = 100
µH, LIM = OPEN
40
60
50
80
70
90
100
0
10
5
15
20
25
EFFICIENCY vs. LOAD CURRENT
(L1 = 10
µH)
MAX1606 toc06
LOAD CURRENT (mA)
EFFICIENCY (%)
LIM = GND
LIM = OPEN
LIM = V
CC
Typical Operating Characteristics (continued)
(V
CC
= 3.3V, V
BATT
= 3.6V, L1 = 10µH, SHDN = LIM = V
CC
, V
OUT(NOM)
= 18V (Figure 3), T
A
= +25°C, unless otherwise noted.)
40
60
50
80
70
90
100
0
10
15
5
20
25
30
EFFICIENCY vs. LOAD CURRENT
(L1 = 47
µH)
MAX1607 toc07
LOAD CURRENT (mA)
EFFICIENCY (%)
LIM = GND
LIM = V
CC
LIM = OPEN
40
60
50
80
70
90
100
0
10
15
5
20
25
30
EFFICIENCY vs. LOAD CURRENT
(L1 = 100
µH)
MAX1607 toc08
LOAD CURRENT (mA)
EFFICIENCY (%)
LIM = GND
LIM = V
CC
LIM = OPEN
0
200
100
400
300
500
600
2.0
3.5
4.0
2.5
3.0
4.5
5.0
5.5
PEAK INDUCTOR CURRENT LIMIT
vs. SUPPLY VOLTAGE
MAX1606 toc09
V
CC
(V)
CURRENT LIMIT (mA)
LIM = OPEN
LIM = GND
LIM = V
CC
V
BATT
= 3.6V
0
200
100
400
300
500
600
0.5
2.5
1.5
3.5
4.5
5.5
PEAK INDUCTOR CURRENT LIMIT
vs. BATTERY VOLTAGE
MAX1606 toc10
V
BATT
(V)
CURRENT LIMIT (mA)
LIM = OPEN
LIM = GND
LIM = V
CC
V
CC
= 3.3V
0
40
20
100
80
60
160
140
120
180
0
2
1
3
4
5
SUPPLY CURRENT
vs. SUPPLY VOLTAGE
MAX1606 toc11
V
CC
(V)
I
CC
(mA)
20
30
40
50
60
70
80
90
100
0
2
1
3
4
5
6
EFFICIENCY vs. BATTERY VOLTAGE
MAX1606 toc05
V
BATT
(V)
EFFICIENCY (%)
L1 = 10
µH, LIM = V
CC
L1 = 100
µH, LIM = OPEN
I
OUT
= 5mA
I
OUT
= 1mA
0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
0
5
10
15
20
25
SUPPLY CURRENT
vs. LOAD CURRENT
MAX1606 toc12
LOAD CURRENT (mA)
I
CC
(mA)
LIM = OPEN
(250mA)
LIM = V
CC
(500mA)
LIM = GND
(125mA)