Triple-Output Power-Supply
Controller for Notebook Computers
_____________________________Typical Operating Characteristics (continued)
(Circuit of Figure 1, Transpower transformer type TTI5870, T
A
= +25°C, unless otherwise noted.)
MAX782
PULSE-WIDTH MODULATION MODE WAVEFORMS
IDLE-MODE WAVEFORMS
LX VOLTAGE
10V/div
LX VOLTAGE
10V/div
+5V OUTPUT
VOLTAGE
50mV/div
+5V OUTPUT
VOLTAGE
50mV/div
HORIZONTAL = 500ns/div
+5V OUTPUT CURRENT = 1A
INPUT VOLTAGE = 16V
HORIZONTAL = 5µs/div
+5V OUTPUT CURRENT = 42mA
INPUT VOLTAGE = 16V
+5V LOAD-TRANSIENT RESPONSE
+3.3V LOAD-TRANSIENT RESPONSE
3A
0A
LOAD CURRENT
3A
0A
LOAD CURRENT
+5V OUTPUT
50mV/div
+3.3V OUTPUT
50mV/div
HORIZONTAL = 200µs/div
V
IN
= 15V
HORIZONTAL = 200µs/div
V
IN
= 15V
_______________________________________________________________________________________
5
MAXIM [ MAXIM INTEGRATED PRODUCTS ]
