isl8033 Intersil Corporation, isl8033 Datasheet - Page 9

• 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 10. STEADY STATE OPERATION AT NO LOAD
FIGURE 12. STEADY STATE OPERATION WITH FULL
OUT1
FIGURE 8. LOAD REGULATION, V
2.490
2.485
2.480
2.475
2.470
2.465
2.460
= 1.2V, V
0.0
T
CHANNEL 1 (PWM)
LOAD CHANNEL 1
A
0.5
OUT2
V
V
= +25°C
OUT1
OUT1
= 1.8V, I
5V
IL1 0.5A/DIV
1.0
RIPPLE 20mV/DIV
RIPPLE 20mV/DIV
IL1 2A/DIV
LX1 2V/DIV
LX1 2V/DIV
IN
I
OUT1
9
OUT
1.5
(A)
= I
OUT2
OUT
2.0
3.3V
= 0A to 3A. (Continued)
= 2.5V
IN
A
ISL8033, ISL8033A
2.5
= +25°C, V
3.0
IN
= 5V, EN = V
FIGURE 11. STEADY STATE OPERATION AT NO LOAD
FIGURE 13. STEADY STATE OPERATION WITH FULL
FIGURE 9. LOAD REGULATION, V
3.270
3.265
3.260
3.255
3.250
3.245
3.240
IN
0.0
, L1 = L2 = 1.5µH, C1 = C2 = C4 = 2x22µF,
T
CHANNEL 2 (PWM)
LOAD CHANNEL 2
A
V
V
0.5
= +25°C
VOUT1 RIPPLE 20mV/Div
OUT2
OUT2
.
LX1 2V/Div
IL2 0.5A/DIV
RIPPLE 20mV/DIV
RIPPLE 20mV/DIV
5V
IL1 2A/Div
IL2 2A/DIV
LX2 2V/DIV
LX2 2V/DIV
1.0
IN
I
OUT
1.5
(A)
OUT
2.0
= 3.3V
2.5
October 21, 2010
FN6854.1
3.0