ISL8013A datasheet(7/17 Pages) INTERSIL

7 / 17 page

FN7526.0

November 25, 2009

ISL8013A

Typical Operating Performance Unless otherwise noted, operating conditions are: T

A = +25°C,

VVIN = 2.5V to 5.5V, EN = VIN, SYNCH = 0V, L = 1.5µH,

C1 = 2x22µF, C2 = 2x22µF, IOUT = 0A to 3A.

FIGURE 3. EFFICIENCY vs LOAD (1MHz 3.3 VIN PWM)

FIGURE 4. EFFICIENCY vs LOAD (1MHz 3.3 VIN PFM)

FIGURE 5. EFFICIENCY vs LOAD (1MHz 5VIN PWM)

FIGURE 6. EFFICIENCY vs LOAD (1MHz 5VIN PFM)

FIGURE 7. POWER DISSIPATION vs LOAD (1MHz,

VOUT = 1.8V)

FIGURE 8. POWER DISSIPATION WITH NO LOAD vs

VIN (PWM VOUT = 1.8V)

100

OUTPUT LOAD (A)

2.5VOUT-PWM

1.8VOUT-PWM

1.5VOUT-PWM

1.2VOUT-PWM

0.0

0.5

1.0

1.5

2.0

2.5

3.0

100

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)

2.5VOUT-PFM

1.8VOUT-PFM 1.5VOUT-PFM

1.2VOUT-PFM

0.0

0.5

1.0

1.5

2.0

2.5

3.0

100

OUTPUT LOAD (A)

2.5VOUT-PWM

1.8VOUT-PWM 1.5VOUT-PWM

1.2VOUT-PWM

3.3VOUT-PWM

100

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)

2.5VOUT-PFM 1.8VOUT-PFM

1.5VOUT-PFM

1.2VOUT-PFM

3.3VOUT-PFM

0.0

0.5

1.0

1.5

2.0

2.5

3.0

0.00

0.25

0.50

0.75

1.00

1.25

1.50

1.75

2.00

OUTPUT LOAD (A)

5VIN-PWM

3.3VIN-PFM

3.3VIN-PWM

5VIN-PFM

100

125

2.0

2.5

3.0

3.5

4.0

4.5

5.0

5.5

VIN (V)

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