ISL8022
Typical Operating Performance (Unless otherwise noted) operating conditions are:
T
= +25°C, V
= 2.8V to 5.5V, EN = V , L1 = L2 = 1.2µH, C1 = 10µF, C2 = C4 = 22µF, I
= 0A to 2A, I = 0A to 1.7A.
OUT2
A
VIN
IN
OUT1
100
100
90
3.3V
OUT2
90
80
80
1.8V
OUT2
1.8V
OUT2
1.5
VOUT1
1.5V
2.5V
OUT1
OUT2
70
60
50
40
70
60
50
40
2.5V
OUT1
1.2V
1.2V
OUT1
OUT1
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
OUTPUT LOAD (A)
OUTPUT LOAD (A)
FIGURE 3. EFFICIENCY vs LOAD, 2.25MHz, 3.3V PWM
IN
FIGURE 4. EFFICIENCY vs LOAD, 2.25MHz, 5V PWM
IN
100
90
80
70
60
50
40
100
90
80
70
60
50
40
3.3V
1.5V
OUT2
1.8V
OUT2
1.8V
OUT2
2.5V
2.5V
OUT1
OUT1
1.5V
OUT1
OUT1
1.2V
OUT1
1.2V
1.6
OUT1
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.8
2.0
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
OUTPUT LOAD (A)
OUTPUT LOAD (A)
FIGURE 5. EFFICIENCY vs LOAD, 2.25MHz, 3.3V PFM
IN
FIGURE 6. EFFICIENCY vs LOAD, 2.25MHz, 5V PFM
IN
1.23
1.22
1.21
1.20
1.19
1.18
1.17
0.90
0.75
3.3V PWM
IN
5 V PFM
IN
0.60
0.45
0.30
0.15
0.00
3.3V V PFM
IN
3.3V PFM
IN
5 V PWM
IN
5V PWM
IN
3.3V V PWM
IN
5V PFM
IN
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
OUTPUT LOAD (A)
OUTPUT LOAD (A)
FIGURE 7. POWER DISSIPATION vs LOAD, 2.25MHz, 1.8V, CHANNEL
2
FIGURE 8. V
OUT
REGULATION vs LOAD, 2.25MHz, 1.2V, CHANNEL1
FN7650 Rev 3.00
March 14, 2013
Page 7 of 18