Max1802 digital camera step-down power supply, Typical operating characteristics (continued) – Rainbow Electronics MAX1802 User Manual
Page 10
1.247
1.249
1.248
1.251
1.250
1.252
1.253
0
100
50
150
200
250
MAX1802 toc10
REFERENCE CURRENT (
µA)
REFERENCE VOLTAGE (V)
REFERENCE VOLTAGE
vs. REFERENCE CURRENT
0
20
10
40
30
50
60
1
100
10
1000
10,000
MAX1802 toc11
FREQUENCY (kHz)
SMALL-SIGNAL RESPONSE (dB)
FB_ TO COMP_ SMALL-SIGNAL
OPEN-LOOP FREQUENCY RESPONSE
MAX1802
Digital Camera Step-Down
Power Supply
10
______________________________________________________________________________________
Typical Operating Characteristics (continued)
(Circuit of Figure 1, V
VDDM
= 6V, V
VDDC
= 3.3V, V
ONM
= 3V, V
ONC
= V
ON1
= V
DCON2
= V
DCON3
= 0, T
A
= +25°C, unless otherwise
noted.)
1ms/div
MAIN OUTPUT STARTUP RESPONSE
MAX1802 toc12
0V
0V
0A
V
ONM
5V/div
V
MAIN
2V/div
I
OUT
200mA/div
1ms/div
CORE OUTPUT STARTUP RESPONSE
MAX1802 toc13
0V
0V
0A
V
ONC
5V/div
V
CORE
2V/div
I
OUT
100mA/div
1ms/div
AUXILIARY CONTROLLER
STARTUP RESPONSE
MAX1802 toc14
V
ON
_
5V/div
V
OUT
2V/div
I
OUT
200mA/div
0V
0V
0A
1.240
1.245
1.250
1.255
1.260
MAX1802 toc09
TEMPERATURE (
°C)
REFERENCE VOLTAGE (V)
-40
20
40
-20
0
60
80
REFERENCE VOLTAGE
vs. TEMPERATURE