isl9105 Intersil Corporation, isl9105 Datasheet - Page 4

• Manufacturer Part Number: isl9105
• Description: 600ma Low Quiescent Current 1.6mhz High Efficiency Synchronous Buck Regulator
• Manufacturer: Intersil Corporation

Typical Operating Performance
FIGURE 1. EFFICIENCY vs LOAD CURRENT (V
1.640
1.640
1.635
1.635
1.630
1.630
1.625
1.625
1.620
1.620
1.615
1.615
1.610
1.610
100
40
35
30
25
20
15
10
90
80
70
60
50
5
0
2.73
2.7
2.7
1
FIGURE 3. LINE REGULATION
I_LOAD = 0A
FIGURE 5. I_Q vs V
0.20
V
I_LOAD = 300mA
O
= 2.5V
10
LOAD CURRENT (mA)
3.7
3.7
V
O
3.74
= 0.8V
4
V
V
IN
IN
(V)
(V)
V
O
IN
= 1.6V
(PFM)
I_LOAD = 600mA
100
0.20
4.7
4.7
RSI = MODE = 0V, L = 3.3µH, C1 = 10µF, C2 = 10µF, I
(Unless otherwise noted, operating conditions are:
IN
4.70
= 3.6V)
1000
ISL9105
FIGURE 2. EFFICIENCY vs LOAD CURRENT (V
1.635
1.630
1.625
1.620
1.615
1.610
1.605
100
5.5
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
90
80
70
60
50
0
2.7
1
0
V
IN
FIGURE 4. LOAD REGULATION
100
FIGURE 6. I_Q vs V
= 3.6V
3.2
V
IN
= 3.6V
V
OUTPUT CURRENT (mA)
10
200
LOAD CURRENT (mA)
IN
OUT
= 5.5V
V
T
IN
A
= 0A
3.7
= +25°C, V
= 2.7V
V
300
IN
V
)
(V)
IN
IN
= 2.7V
(PWM)
100
400
4.2
VIN
V
= 3.6V, EN = VIN,
IN
= 5.5V
500
February 13, 2007
O
4.7
= 1.6V)
FN6415.1
1000
600