
ISL85033
Typical Performance Curves Circuit of Figure 2. V IN = 12V, V OUT1 = 5V, V OUT2 = 3.3V, I OUT1 = 3A, I OUT2 = 3A,
T A = -40°C to +85°C, unless otherwise noted. Typical values are at T A = +25°C. (Continued)
EN1 5V/DIV
V OUT1 2V/DIV
V OUT2 RIPPLE 20mV/DIV
IL2 2A/DIV
IL1 0.5A/DIV
PG1 5V/DIV
FIGURE 22. LOAD TRANSIENT CHANNEL 2
EN2 5V/DIV
V OUT2 2V/DIV
IL2 0.5A/DIV
PG2 5V/DIV
FIGURE 24. SOFT-START WITH NO LOAD CHANNEL 2
EN2 5V/DIV
V OUT2 2V/DIV
FIGURE 23. SOFT-START WITH NO LOAD CHANNEL 1
EN1 5V/DIV
V OUT1 2V/DIV
IL1 2A/DIV
PG1 5V/DIV
FIGURE 25. SOFT-START AT FULL LOAD CHANNEL 1
EN1 5V/DIV
V OUT1 1V/DIV
IL2 2A/DIV
IL1 0.5A/DIV
PG2 5V/DIV
PG 5V/DIV
FIGURE 26. SOFT-START AT FULL LOAD CHANNEL 2
13
FIGURE 27. SOFT-DISCHARGE SHUTDOWN CHANNEL 1
FN6676.6
February 23, 2012