MAX764/MAX765/MAX766
-5V/-12V/-15V or Adjustable,
High-Efficiency, Low I
Q
DC-DC Inverters
4 _______________________________________________________________________________________
____________________________Typical Operating Characteristics (continued)
(V+ = 5V, V
OUT
= -5V, T
A
= +25°C, unless otherwise noted.)
0
-60
SHUTDOWN CURRENT
vs. TEMPERATURE
MAX764 -07
TEMPERATURE (°C)
SHUTDOWN CURRENT (µA)
-40 -20 0 20 40 60 80 100 120 140
V+ = 15V
0.5
1.0
1.5
2.0
2.5
3.0
4.0
3.5
V+ = 8V
V+ = 4V
15.0
-60
MAXIMUM SWITCH ON-TIME
vs. TEMPERATURE
MAX764 -08
TEMPERATURE (°C)
MAXIMUM SWITCH ON-TIME (µs)
-40 -20 0 20 40 60 80 100 120 140
V+ = 15V
V+ = 5V
15.2
15.4
15.6
15.8
16.0
16.2
16.4
16.6
16.8
17.0
2.20
-60
MINIMUM SWITCH OFF-TIME
vs. TEMPERATURE
MAX764 -09
TEMPERATURE (°C)
MINIMUM SWITCH OFF-TIME (µs)
-40 -20 0 20 40 60 80 100 120 140
2.25
2.30
2.35
2.40
2.45
2.50
2.60
2.55
V+ = 5V
V+ = 15V
6.2
-60
SWITCH ON/OFF-TIME RATIO
vs. TEMPERATURE
MAX764 -10
TEMPERATURE (°C)
SWITCH ON/OFF-TIME RATIO (µs/µs)
-40 -20 0 20 40 60 80 100 120 140
V+ = 5V
6.3
6.4
6.5
6.6
6.7
6.8
6.9
7.0
7.1
7.2
0
START-UP SUPPLY VOLTAGE
vs. OUTPUT CURRENT
MAX764 -11
OUTPUT CURRENT (mA)
START-UP SUPPLY VOLTAGE (V)
0
1
2
3
4
5
6
8
7
50 100 150 200 250 300
CIRCUIT OF FIGURE 2
10,000
1
20
LX LEAKAGE CURRENT
vs. TEMPERATURE
10
100
MAX764-12
TEMPERATURE (°C)
LX LEAKAGE CURRENT (nA)
1000
30 40 50 60 70 80 90 100 110 120 130
IV
OUT
I + (V+) = 20V
MAXIMUM OUTPUT CURRENT
vs. SUPPLY VOLTAGE
MAX764 -04
SUPPLY VOLTAGE (V)
MAXIMUM OUTPUT CURRENT (mA)
3
600
4 5 6 7 8 9 10 11 12 13 14 15 16
500
400
300
200
100
0
V
OUT
= -5V
V
OUT
= -12V
V
OUT
= -15V
CIRCUIT OF FIGURE 2
60
NO-LOAD SUPPLY CURRENT
vs. SUPPLY VOLTAGE
MAX764 -05
SUPPLY VOLTAGE (V)
NO-LOAD SUPPLY CURRENT (µA)
3
65
70
75
80
85
90
100
95
4 5 6 7 8 9 10 11 12 13 14 15 16
50
-60
NO-LOAD SUPPLY CURRENT
vs. TEMPERATURE
55
MAX764 -06
TEMPERATURE (°C)
NO-LOAD SUPPLY CURRENT (µA)
-40 -20 0 20 40 60 80 100 120 140
60
65
70
75
80
85
90
95
100
105
110
V+ = 15V
V+ = 5V
