ISL8013AIRZ Просмотр технического описания (PDF) - Intersil
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ISL8013AIRZ Datasheet PDF : 17 Pages
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ISL8013A
Typical Operating Performance
100
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 3A.
100
90
80
2.5VOUT-PWM1.8VOUT-PWM
1.5VOUT-PWM
70
1.2VOUT-PWM
60
90
80
2.5VOUT-PFM
1.8VOUT-PFM 1.5VOUT-PFM
70
1.2VOUT-PFM
60
50
50
40
0.0
0.5
1.0
1.5
2.0
2.5
3.0
OUTPUT LOAD (A)
FIGURE 3. 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 4. EFFICIENCY vs LOAD (1MHz 3.3 VIN PFM)
100
90
80
2.5VOUT-PW1M.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
OUTPUT LOAD (A)
FIGURE 5. EFFICIENCY vs LOAD (1MHz 5VIN PWM)
100
90
80
70
2.5VOUT-PFM 1.8VOUT-PFM1.5VOUT1-.P2FVMOUT-PFM
3.3VOUT-PFM
60
50
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 6. EFFICIENCY vs LOAD (1MHz 5VIN PFM)
2.00
1.75
1.50
1.25
1.00
0.75
0.50
0.25
3.3VIN-PWM
3.3VIN-PFM 5VIN-PFM
5VIN-PWM
0.00
0.0
0.5
1.0
1.5
2.0
2.5
3.0
OUTPUT LOAD (A)
FIGURE 7. 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 8. POWER DISSIPATION WITH NO LOAD vs
VIN (PWM VOUT = 1.8V)
7
FN7526.0
November 25, 2009
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