ISL8023 INTERSIL [Intersil Corporation], ISL8023 Datasheet - Page 7

• Manufacturer Part Number: ISL8023
• Description: 3A/4A Low Quiescent Current High Efficiency Synchronous Buck Regulator
• Manufacturer: INTERSIL [Intersil Corporation]

Typical Operating Performance
EN = V
FIGURE 8. POWER DISSIPATION vs LOAD (1MHz, V
100
100
1.08
0.90
0.72
0.54
0.36
0.18
IN
90
80
70
60
50
40
90
80
70
60
50
40
FIGURE 4. EFFICIENCY vs LOAD (1MHz 3.3 V
, SYNC = V
0.0
FIGURE 6. EFFICIENCY vs LOAD (1MHz 5V
0
0.0
0.0
1.2V
0.5
0.5
3.3V
1.2V
0.5
IN
OUT
OUT
OUT
, L = 1.0µH, C
3.3V
1.0
1.0
1.0
IN
1.5V
1.5V
PWM MODE
1.5
1.5
1.5
OUT
OUT
I
7
I
OUT
OUT
I
OUT
1
2.0
2.0
= 22µF, C
2.0
(A)
(A)
1.8V
(A)
1.8V
OUT
2.5
2.5
OUT
2.5
2
= 2 x 22µF, I
5V
3.0
3.0
IN
3.0
IN
IN
PWM MODE
ISL8023, ISL8024
2.5V
PWM)
OUT
2.5V
PWM)
3.5
3.5
OUT
3.5
OUT
= 1.8V)
OUT
4.0
4.0
4.0
= 0A to 4A).
Unless otherwise noted, operating conditions are: T
FIGURE 9. V
1.244
1.238
1.232
1.226
1.220
1.214
1.208
100
100
90
80
70
60
50
40
90
80
70
60
50
40
FIGURE 5. EFFICIENCY vs LOAD (1MHz 3.3 V
0.0
0.0
FIGURE 7. EFFICIENCY vs LOAD (1MHz 5V
0.0
1.2V
3.3V
1.2V
OUT
0.5
0.5
IN
OUT
0.5
OUT
PWM MODE
REGULATION vs LOAD (1MHz, V
1.0
1.0
1.5V
1.0
1.5V
5V
OUT
IN
3.3V
OUT
1.5
1.5
PFM MODE
1.5
I
OUT
I
I
IN
OUT
OUT
1.8V
PFM MODE
(A)
1.8V
2.0
2.0
2.0
(A)
(A)
OUT
OUT
2.5
2.5
2.5
2.5V
5V
A
= +25°C, V
IN
OUT
3.0
3.0
PWM MODE
3.0
2.5V
IN
December 22, 2011
OUT
IN
PFM)
OUT
3.3V
PFM)
3.5
3.5
= 1.2V)
3.5
OUT
VIN
FN7812.0
= 5V,
4.0
4.0
4.0