isl8009a Intersil Corporation, isl8009a Datasheet - Page 4

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

Typical Operating Performance
100
100
1.24
1.23
1.22
1.21
1.20
1.19
1.18
1.17
1.16
90
80
70
60
50
40
30
20
10
90
80
70
60
50
40
30
20
10
0
FIGURE 5. V
0
0.00
0.00
0.00
FIGURE 1. EFFICIENCY vs LOAD, V
FIGURE 3. EFFICIENCY vs LOAD, V
2.8V
1.2V
1.2V
3.3V
IN
OUT
OUT
- PWM
1.5V
0.25
0.25
IN
0.25
1.5V
- PWM
- PWM
OUT
- PWM
OUT
OUT
REGULATION vs LOAD, V
- PWM
0.50
0.50
5V
0.50
- PWM
OUTPUT LOAD (A)
OUTPUT LOAD (A)
OUTPUT LOAD (A)
IN
2.8V
1.8V
- PWM
1.8V
IN
4
OUT
0.75
0.75
0.75
- PFM
OUT
2.5V
- PWM
5V
- PWM
IN
OUT
- PFM
2.5V
1.00
1.00
1.00
IN
IN
- PWM
= 3.3V PWM
OUT
= 5V PWM
3.3V
RSI = SKIP = 0V, L = 2.2µH, C
(Unless otherwise noted, operating conditions are: T
OUT
- PWM
3.3V
OUT
1.25
1.25
1.25
= 1.2V
IN
- PWM
-PFM
1.50
1.50
1.50
ISL8009A
100
1.54
1.53
1.52
1.51
1.50
1.49
1.48
1.47
1.46
100
1
90
80
70
60
50
40
90
80
70
60
50
40
0.05
0.05
FIGURE 6. V
= 20µF, C
0.00
FIGURE 2. EFFICIENCY vs LOAD, V
FIGURE 4. EFFICIENCY vs LOAD, V
2.8V
1.2V
1.2V
0.10
3.3V
IN
OUT
OUT
0.15
1.5V
- PWM
2
1.5V
IN
0.25
= 20µF, I
- PFM
- PFM
0.15
OUT
- PWM
OUT
OUT
0.25
- PFM
REGULATION vs LOAD, V
- PFM
0.20
A
5V
OUT
0.50
= +25°C, V
OUTPUT LOAD (A)
OUTPUT LOAD (A)
IN
OUTPUT LOAD (A)
2.8V
- PWM
0.35
= 0A)
1.8V
0.25
1.8V
IN
OUT
0.75
2.5V
- PFM
OUT
0.30
VIN
5V
0.45
- PFM
OUT
- PFM
IN
= 5V, EN = VIN,
- PFM
- PFM
0.35
2.5V
1.00
IN
IN
0.55
= 3.3V PFM
OUT
= 5V PFM
3.3V
0.40
OUT
3.3V
- PFM
February 13, 2008
OUT
1.25
0.65
IN
= 1.5V
0.45
-PFM
- PFM
FN6656.0
0.50
0.75
1.50