12V/15V or Adjustable, High-Efficiency,
Low I
Q
, Step-Up DC-DC Converters
____________________________Typical Operating Characteristics (continued)
(Circuit of Figure 2, T
A
= +25°C, unless otherwise noted.)
MAX761/MAX762
LX LEAKAGE vs. TEMPERATURE
MAX761-10
PEAK CURRENT AT LX vs. TEMPERATURE
MAX761-11
SHUTDOWN CURRENT
vs. TEMPERATURE
3.5
3.0
I
CC
(µA)
2.5
2.0
1.5
V+ = 8V
1.0
0.5
0
V+ = 4V
-60 -40 -20
0 20 40 60 80 100 120 140
TEMPERATURE (°C)
V+ = 15V
MAX761-12
1000
V+ = 15V
100
LX LEAKAGE (nA)
1.5
1.4
1.3
1.2
V+ = 12V
4.0
10
I
PEAK
(A)
1.1
1.0
0.9
0.8
V+ = 5V
1
0.1
V
LX
= 16.5V
0.7
0.6
0.01
20
40
60
80
100 120
TEMPERATURE (°C)
140
0.5
-60 -40 -20 0 20 40 60 80 100 120 140
TEMPERATURE (°C)
SWITCH-ON TIME vs. TEMPERATURE
MAX761-13
SWITCH-OFF TIME vs. TEMPERATURE
MAX761-14
POWER-SUPPLY CURRENT
vs. TEMPERATURE
MAX761-15
8.5
2.0
100
V+ = 16.5V
V+ = 3V
V+ = 5V
toff (µs)
ton (µs)
V+ = 5V
I
CC
(µA)
-60
0
60
120
8.0
1.5
90
7.5
-60
0
60
120
TEMPERATURE (°C)
1.0
TEMPERATURE (°C)
80
-60
0
60
120
TEMPERATURE (°C)
SWITCH-ON/SWITCH-OFF TIME RATIO
vs.TEMPERATURE
MAX761-16
SHDN RESPONSE TIME
12V
7
ton/toff RATIO (µs/µs)
V+ = 5V
6
5V
4V
0V
5
-60
0
60
120
I
LOAD
= 100mA, V
IN
= 5V
A: V
OUT
, 2V/div
B: SHDN (0V to 4V)
TEMPERATURE (°C)
2ms/div
_______________________________________________________________________________________
5
MAXIM [ MAXIM INTEGRATED PRODUCTS ]
