Typical operating characteristics (continued) – Rainbow Electronics MAX1801 User Manual
Page 5
MAX1801
Digital Camera Step-Up Slave
DC-DC Controller
_______________________________________________________________________________________
5
0
20
60
40
80
100
0.4
0.6
0.5
0.7
0.8
0.9
1.0
1.1
1.2
MAXIMUM DUTY CYCLE vs. V
DCON
MAX1801 toc04
V
DCON
(V)
MAXIMUM DUTY CYCLE (%)
f
OSC
= 500kHz
0
20
60
40
80
100
0
400
200
600
800
1000
DEFAULT MAXIMUM DUTY CYCLE
vs. FREQUENCY
MAX1801 toc05
FREQUENCY (kHz)
DEFAULT MAXIMUM DUTY CYCLE (%)
C
OSC
= 470pF
0
2
6
4
8
10
2.5
3.5
3.0
4.0
4.5
5.0
5.5
SLEEP-MODE CURRENT
vs. INPUT VOLTAGE
MAX1801toc06
INPUT VOLTAGE (V)
SLEEP-MODE CURRENT (
µ
A)
10
0.001
0
0.5
1.0
1.5
SHUTDOWN CURRENT
vs. REFERENCE VOLTAGE
0.01
0.1
1
MAX1801 toc07
REFERENCE VOLTAGE (V)
SHUTDOWN CURRENT (
µ
A)
3.20
3.30
3.25
3.35
3.40
-40
0
-20
20
40
60
80
REFERENCE INPUT CURRENT
vs. TEMPERATURE
MAX1801 toc08
TEMPERATURE (
°C)
REFERENCE CURRENT (
µ
A)
60
0
1
100
1000
10
10,000
FB TO COMP SMALL-SIGNAL OPEN-LOOP
FREQUENCY RESPONSE
MAX1801 toc09
FREQUENCY (kHz)
SMALL-SIGNAL RESPONSE (dB) 10
20
30
40
50
Typical Operating Characteristics (continued)
(Circuit of Figure 1, T
A
= +25°C, unless otherwise noted.)