isl8033 Intersil Corporation, isl8033 Datasheet - Page 11

• Manufacturer Part Number: isl8033
• Description: Dual 3a Low Quiescent Current High Efficiency Synchronous Buck Regulator
• Manufacturer: Intersil Corporation

Typical Operating Performance ISL8033
Unless otherwise noted, operating conditions are: T
V
FIGURE 22. SOFT-DISCHARGE SHUTDOWN CHANNEL 2
FIGURE 24. CHANNEL 2 STEADY STATE OPERATION AT
OUT1
FIGURE 20. SOFT-START AT FULL LOAD CHANNEL 2
= 1.2V, V
NO LOAD WITH FREQUENCY = 6MHz
OUT2
V
OUT2
= 1.8V, I
SYNCH 5V/DIV
RIPPLE 20mV/DIV
LX2 2V/DIV
11
OUT1
IL2 0.2A/DIV
= I
OUT2
= 0A to 3A. (Continued)
V
V
IL2 0.5A/DIV
OUT2
OUT2
IL2 1A/DIV
EN2 2V/DIV
EN2 2V/DIV
PG 2V/DIV
PG 5V/DIV
A
ISL8033, ISL8033A
= +25°C, V
1V/DIV
1V/DIV
IN
= 5V, EN = V
FIGURE 21. SOFT-DISCHARGE SHUTDOWN CHANNEL 1
FIGURE 23. CHANNEL 1 STEADY STATE OPERATION AT
FIGURE 25. CHANNEL 1 STEADY STATE OPERATION AT
IN
, L1 = L2 = 1.5µH, C1 = C2 = C4 = 2x22µF,
NO LOAD WITH FREQUENCY = 6MHz
FULL LOAD WITH FREQUENCY = 6MHz
V
V
OUT1
OUT1
SYNCH 5V/DIV
SYNCH 5V/DIV
IL1 0.2A/DIV
IL1 2A/DIV
RIPPLE 20mV/DIV
LX1 2V/DIV
LX1 2V/DIV
RIPPLE 20mV/DIV
V
OUT1
IL1 0.5A/DIV
EN1 2V/DIV
PG 5V/DIV
0.5V/DIV
October 21, 2010
FN6854.1