8014AIRZ 查看數據表（PDF） - Renesas Electronics
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8014AIRZ Datasheet PDF : 16 Pages
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ISL8014A
Typical Operating Performance Unless otherwise noted, operating conditions are: TA = +25°C, VVIN = 2.5V to 5.5V, EN = VIN,
SYNCH = 0V, L = 1.5µH, C1 = 2x22µF, C2 = 2x22µF, IOUT = 0A to 4A.
100
100
90
80
2.5VOUT-PWM
1.8VOUT-PWM
70
1.5VOUT-PWM
1.2VOUT-PWM
60
90
80
2.5VOUT-PFM
1.8VOUT-PFM 1.5VOUT-PFM 1.2VOUT-PFM
70
60
50
50
40
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0
OUTPUT LOAD (A)
FIGURE 1. EFFICIENCY vs LOAD (1MHz 3.3 VIN PWM)
40
0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0
OUTPUT LOAD (A)
FIGURE 2. EFFICIENCY vs LOAD (1MHz 3.3 VIN PFM)
100
90
80
2.5VOUT-PWM 1.8VOUT-PWM 1.5VOUT-PWM
70 3.3VOUT-PWM
1.2VOUT-PWM
60
50
40
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0
OUTPUT LOAD (A)
FIGURE 3. EFFICIENCY vs LOAD (1MHz 5VIN PWM)
1.0
0.9
0.8 2.5VOUT-PFM
0.7
3.3VOUT-PFM
1.5VOUT-PFM
1.8VOUT-PFM
1.2VOUT-PFM
0.6
0.5
0.4
0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0
OUTPUT LOAD (A)
FIGURE 4. EFFICIENCY vs LOAD (1MHz 5VIN PFM)
2.00
1.75
1.50
1.25
1.00
0.75
0.50
0.25
3.3VIN-PFM
5VIN-PWM
3.3VIN-PWM 5VIN-PFM
0
0.0
0.5
1.0
1.5
2.0
2.5
3.0
OUTPUT LOAD (A)
FIGURE 5. POWER DISSIPATION vs LOAD (1MHz, VOUT = 1.8V)
125
100
75
50
25
0
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
VIN (V)
FIGURE 6. POWER DISSIPATION WITH NO LOAD vs VIN
(PWM VOUT = 1.8V)
FN7525 Rev 2.00
December 16, 2014
Page 6 of 16
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