Rainbow Electronics MAX773 - Manual (Page 5)

MAX770–MAX773
5V/12V/15V or Adjustable, High-Efficiency,
Low I Q , Step-Up DC-DC Controllers
_______________________________________________________________________________________ 5
250
0
-60 -20 60 140
REFERENCE OUTPUT RESISTANCE vs.
TEMPERATURE
50
MAX770–3-10
TEMPERATURE ( ° C)
REFERENCE OUTPUT RESISTANCE (
Ω
)
20 100
150
-40 0 80 40 120
100
200
100µA
50µA
10µA 1.502
-60 -20 60 140
REFERENCE vs. TEMPERATURE
MAX770–3-11
TEMPERATURE ( ° C)
REFERENCE (V)
20 100 -40 0 80 40 120
1.500
1.498
1.496
1.494
1.492
1.504
1.506
4.0
-60 -20 60 140
SHUTDOWN CURRENT vs. TEMPERATURE
MAX770–3-12
TEMPERATURE ( ° C)
I CC
(µA)
20 100 -40 0 80 40 120
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
V+ = 15V
V+ = 4V
V+ = 8V
15.5
16.0
16.5
-60 -30 0 30 60 90 120 150
MAXIMUM SWITCH ON-TIME vs.
TEMPERATURE
TEMPERATURE (°C)
t ON(MAX) (µs)
MAX770–3-13
2.20
2.25
2.30
-60 -30 0 30 60 90 120 150
MINIMUM SWITCH OFF-TIME vs.
TEMPERATURE
TEMPERATURE (°C)
t OFF(MIN) (µs)
MAX770–3-14
6.0
7.0
8.0
-60 -30 0 30 60 90 120 150
MAXIMUM SWITCH ON-TIME/
MINIMUM SWITCH OFF-TIME RATIO
vs. TEMPERATURE
TEMPERATURE (°C)
t ON(MAX)/
t OFF(MIN) RATIO
MAX770–3-15
7.5
6.5
____________________________Typical Operating Characteristics (continued)
(T A = +25°C, unless otherwise noted.)