isl8033 Intersil Corporation, isl8033 Datasheet - Page 13

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

Typical Operating Performance ISL8033A
Unless otherwise noted, operating conditions are: T
V
FIGURE 31. EFFICIENCY vs LOAD, 1MHz 3.3V
FIGURE 33. STEADY STATE OPERATION AT NO LOAD
FIGURE 35. STEADY STATE OPERATION WITH FULL
OUT1
100
90
80
70
60
50
40
= 1.2V, V
0.0
CH1 +25°C
CHANNEL 1
LOAD CHANNEL 1
OUT2
1.2V
0.5
OUT
= 1.8V, I
1.0
OUTPUT LOAD (A)
1.5V
13
OUT1
OUT
1.5
V
OUT1
= I
V
OUT1
OUT2
RIPPLE 20mV/DIV
2.5V
1.8V
2.0
RIPPLE 20mV/DIV
= 0A to 3A.
IL1 0.2A/DIV
OUT
OUT
LX1 2V/DIV
IL1 0.2A/DIV
LX1 2V/DIV
A
ISL8033, ISL8033A
2.5
= +25°C, V
IN
DUAL
3.0
IN
= 5V, EN = V
FIGURE 32. EFFICIENCY vs LOAD, 1MHz 5V
FIGURE 34. STEADY STATE OPERATION AT NO LOAD
FIGURE 36. STEADY STATE OPERATION WITH FULL
100
90
80
70
60
50
40
0.0
IN
, L1 = 0.68µH, L2 = 1µH, C1 = C2 = C4 = 2x22µF,
CH1 +25°C
CHANNEL 2
LOAD CHANNEL 2
0.5
1.2V
OUT
1.0
OUTPUT LOAD (A)
1.5V
2.5V
OUT
1.5
OUT
V
OUT2
V
1.8V
OUT2
RIPPLE 20mV/DIV
2.0
OUT
RIPPLE 20mV/DIV
IL2 0.2A/DIV
LX2 2V/DIV
IL2 0.2A/DIV
2.5
3.3V
IN
LX2 2V/DIV
October 21, 2010
, DUAL
OUT
FN6854.1
3.0