Rainbow Electronics MAX783 - Manual (Page 6)

MAX783
Triple-Output Power-Supply Controller
for Notebook Computers
6 _______________________________________________________________________________________
I LOAD = 2A
+5V LINE-TRANSIENT RESPONSE, FALLING
V IN , 16V TO 10V
2V/div
+5V OUTPUT
50mV/div
20 µ s/div
V IN = 15V
+5V LOAD-TRANSIENT RESPONSE
+5V OUTPUT
50mV/div
3A
0A
LOAD CURRENT
200 µ s/div
I LOAD = 2A
+5V LINE-TRANSIENT RESPONSE, RISING
V IN , 10V TO 16V
2V/div
+5V OUTPUT
50mV/div
20 µ s/div
____________________________Typical Operating Characteristics (continued)
(Circuit of Figure 1, Transpower TTI5902 transformer, T A = +25°C, unless otherwise noted.)
30
10 100
OUTPUT NOISE SPECTRUM
FREQUENCY (kHz)
OUTPUT VOLTAGE NOISE (dBmV
RMS
)
-30
-10
10
-20
0
20
1
V IN = 10V
V OUT = 5V
I OUT = 50mA
30
100k 1M
OUTPUT NOISE SPECTRUM
-50
FREQUENCY (Hz)
OUTPUT VOLTAGE NOISE (dBmV
RMS
)
-30
-10
10
-60
-40
-20
0
20
10k
V IN = 8V TO 12V
(PLOTS SUPERIMPOSED)
V
OUT = 5V
I OUT = 1A