isl8009a Intersil Corporation, isl8009a Datasheet - Page 5

• Manufacturer Part Number: isl8009a
• Description: 1.5a Low Quiescent Current 1.6mhz High Efficiency Synchronous Buck Regulator
• Manufacturer: Intersil Corporation

Typical Operating Performance
FIGURE 11. POWER DISSIPATION vs V
1.84
1.83
1.82
1.81
1.80
1.79
1.78
1.77
1.76
3.42
3.40
3.38
3.36
3.34
3.32
3.30
3.28
3.26
FIGURE 9. V
FIGURE 7. V
45
40
35
30
25
20
15
10
5
0
0.00
2.75
0.00
2.7V
4V
IN
IN
- PWM
3.3V
- PWM
V
0.25
0.25
5.5V
OUT
3.25
4V
IN
OUT
OUT
IN
IN
5.5V
- PWM
= 1.8V
- PWM
- PWM
REGULATION VS LOAD, V
REGULATION vs LOAD, V
IN
0.50
0.50
4V
- PWM
NO LOAD- PWM
OUTPUT LOAD (A)
3.75
OUTPUT LOAD (A)
IN
- PFM
2.7V
5
V
0.75
IN
0.75
(V)
IN
4.25
NO LOAD - PFM
5.5V
- PFM
5V
5.5V
IN
IN
IN
1.00
-PFM
IN
1.00
- PFM
AT NO LOAD,
- PFM
4.75
RSI = SKIP = 0V, L = 2.2µH, C
(Unless otherwise noted, operating conditions are: T
OUT
OUT
1.25
4V
1.25
= 1.8V
= 3.3V
IN
-PFM
5.25
1.50
1.50
ISL8009A
FIGURE 10. POWER DISSIPATION vs LOAD, 1.6 MHz,
FIGURE 12. OUTPUT VOLTAGE REGULATION vs V
2.54
2.53
2.52
2.51
2.50
2.49
2.48
2.47
2.46
1
2.5
2.0
1.5
1.0
0.5
0.0
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0.0
FIGURE 8. V
= 20µF, C
0.00
2.0
0.00
3.3V
0.75A LOAD
5V
IN
IN
3.3V
5V
2.5
2
V
MODE
- PWM
0.25
- PWM
0.25
OUT
= 20µF, I
IN
IN
OUT
- PWM
- PWM
= 1.8V
3.0
REGULATION vs LOAD, V
3.3V
NO LOAD
A
OUT
0.50
0.50
1.5A LOAD
= +25°C, V
OUTPUT LOAD (A)
5V
INPUT VOLTAGE (V)
IN
OUTPUT LOAD (A)
2.8V
IN
= 0A) (Continued)
- PFM
3.5
- PFM
IN
0.75
0.75
- PFM
VIN
4.0
5V
= 5V, EN = VIN,
IN
1.00
1.00
- PFM
4.5
2.8V
3.3V
OUT
February 13, 2008
1.25
1.25
IN
IN
5.0
IN
= 2.5V
-PFM
- PWM
PWM
FN6656.0
1.50
1.50
5.5