isl8033 Intersil Corporation, isl8033 Datasheet - Page 10

• 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 14. STEADY STATE OPERATION WITH FULL
OUT1
FIGURE 18. SOFT-START WITH NO LOAD CHANNEL 2
FIGURE 16. LOAD TRANSIENT CHANNEL 2 (PWM)
= 1.2V, V
LOADS AT BOTH CHANNELS
OUT2
V
OUT2
= 1.8V, I
IL2 2A/DIV
RIPPLE 50mV/DIV
10
V
OUT1
OUT1
V
OUT2
= I
RIPPLE 20mV/DIV
OUT2
RIPPLE 20mV/DIV
= 0A to 3A. (Continued)
V
IL2 0.5A/DIV
LX1 2V/DIV
LX2 2V/DIV
OUT2
EN2 2V/DIV
PG 5V/DIV
A
ISL8033, ISL8033A
= +25°C, V
1V/DIV
IN
= 5V, EN = V
FIGURE 17. SOFT-START WITH NO LOAD CHANNEL 1
FIGURE 19. SOFT-START AT FULL LOAD CHANNEL 1
FIGURE 15. LOAD TRANSIENT CHANNEL 1 (PWM)
IN
, L1 = L2 = 1.5µH, C1 = C2 = C4 = 2x22µF,
V
OUT1
IL1 2A/DIV
RIPPLE 50mV/DIV
V
V
OUT1
OUT1
IL1 0.5A/DIV
EN1 2V/DIV
IL1 1A/DIV
PG 5V/DIV
EN1 2V/DIV
PG 2V/DIV
0.5V/DIV
October 21, 2010
0.5V/DIV
FN6854.1