Rainbow Electronics MAX1621 - Manual (Page 6)

MAX1620/MAX1621
Digitally Adjustable LCD Bias Supplies
6 _______________________________________________________________________________________
_____________________________Typical Operating Characteristics (continued)
(V DD = 5V, V BATT = 10V, L1 = 100µH, T A = +25°C, unless otherwise noted.)
0.70
0.75
0.80
0.85
0.90
0.95
1.00
-26 -24 -22 -20 -18 -16 -14 -12
EFFICIENCY vs. OUTPUT VOLTAGE
MAX1620/21-04
OUTPUT VOLTAGE (V)
EFFICIENCY (%)
-10mA
-20mA
0.70
0.75
0.80
0.85
0.90
0.95
1.00
2 4 6 8 10 12 14 16 18 20
EFFICIENCY vs. V BATT
MAX1620/21-05
V BATT (V)
EFFICIENCY (%)
+20V, +10mA
-20V, -10mA
0
20
40
60
80
100
120
140
160
180
200
0 1 2 3 4 5
SUPPLY CURRENT
vs. SUPPLY VOLTAGE
MAX1620/21-06
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (
µ A)
100
125
150
175
200
-40 -20 0 20 40 60 80
SUPPLY CURRENT vs. TEMPERATURE
MAX1620/21-07
TEMPERATURE (°C)
SUPPLY CURRENT (
µ A)
1.49
1.50
1.51
-40 -20 0 20 40 60 80
REFERENCE VOLTAGE
vs. TEMPERATURE
MAX1620/21-10
TEMPERATURE (°C)
REFERENCE VOLTAGE (V)
0
2
4
6
8
10
12
14
16
18
20
0 1 2 3 4 5
SHUTDOWN SUPPLY CURRENT
vs. SUPPLY VOLTAGE
MAX1620/21-08
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (
µ
A)
6
8
10
12
14
16
18
20
-40 -20 0 20 40 60 80
SHUTDOWN SUPPLY CURRENT
vs. TEMPERATURE
MAX1620/21-09
TEMPERATURE (°C)
SUPPLY CURRENT (
µ A)
18.0
18.5
19.0
19.5
20.0
20.5
21.0
21.5
22.0
2.5 3.0 3.5 4.0 4.5 5.0
k-FACTOR vs. SUPPLY VOLTAGE
MAX1620/21-11
SUPPLY VOLTAGE (V)
k-FACTOR (
µ s-V)
18.0
18.5
19.0
19.5
20.0
20.5
21.0
21.5
22.0
-60 -40 -20 0 20 40 60 80 100
k-FACTOR vs. TEMPERATURE
MAX1620/21-12
TEMPERATURE (°C)
k-FACTOR (
µ s-V)