ISL85033 datasheet(10/25 Pages) INTERSIL

Part #	ISL85033

Description	Wide VIN Dual Standard Buck Regulator With 3A/3A Coutinuous Output Current

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Manufacturer	INTERSIL [Intersil Corporation]

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ISL85033

10

FN6676.1

June 24, 2010

Typical Performance Curves Circuit of Figure 2. V

IN = 12V, VOUT1 = 5V, VOUT2 = 3.3V, IOUT1 = 3A,

IOUT2 = 3A, TA = -40°C to +85°C, unless otherwise noted. Typical

values are at TA = +25°C.

FIGURE 4. EFFICIENCY vs LOAD, TA = +25°C,

VIN = 28V

FIGURE 5. EFFICIENCY vs LOAD, TA = +25°C,

FSW = 500kHz, VIN = 12V

FIGURE 6. EFFICIENCY vs LOAD, TA = +25°C,

CURRENT SHARING 5VOUT, FSW =500kHz

FIGURE 7. POWER DISSIPATION vs LOAD,

TA = +25°C, CURRENT SHARING 5VOUT,

FSW = 500kHz

FIGURE 8. POWER DISSIPATION vs LOAD,

TA = +85°C, CURRENT SHARING 5VOUT,

FSW = 500kHz

FIGURE 9. VOUT REGULATION vs LOAD, CHANNEL 1,

TA = +25°C, 5VOUT, FSW = 500kHz

40

50

60

70

80

90

100

0.0

0.5

1.0

1.5

2.0

2.5

3.0

OUTPUT LOAD (A)

3.3VOUT 500kHz

9VOUT 1MHz

12VOUT 1MHz

1.8VOUT 300kHz

5VOUT 500kHz

40

50

60

70

80

90

100

0.0

0.5

1.0

1.5

2.0

2.5

3.0

OUTPUT LOAD (A)

3.3VOUT

5VOUT

40

50

60

70

80

90

100

0

123456

OUTPUT LOAD (A)

12VIN

9VIN

28VIN

0.0

0.7

1.4

2.1

2.8

3.5

4.2

OUTPUT LOAD (A)

0

123456

12VIN

9VIN

28VIN

0.0

0.8

1.6

2.4

3.2

4.0

4.8

OUTPUT LOAD (A)

0

123456

12VIN

9VIN

28VIN

4.98

4.99

5.00

5.01

5.02

5.03

5.04

0

0.5

1.0

1.5

2.0

2.5

3.0

OUTPUT LOAD (A)

12VIN

9VIN

28VIN

ISL85033

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