ISL6115_07 datasheet(7/12 Pages) INTERSIL

Part #	ISL6115

Description	Power Distribution Controllers

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Manufacturer	INTERSIL [Intersil Corporation]

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7

February 6, 2007

Example

A typical -48V supply may vary from -36 to -72V. Therefore,

VBUS,MAX = -72V

VBUS,MIN = -36V

ICHIP = 15mA (max)

Sizing RCL:

RCL = (VBUS,MIN - 12)/IC

RCL = (36 - 12)/0.015

RCL = 1.6kΩ [Typical Value = 1.58kΩ]

Power Rating of RCL:

PRCL = IC(VBUS,MAX - 12)

PRCL = (0.015)(72 - 12)

PRCL = 0.9W [Typical Value = 1W]

DD1 Current Rating:

IDD1 = (VBUS,MAX - 12)/RCL

IDD1 = (72 - 12)/1.58kΩ

IDD1 = 38mA [Typical Value = 12V rating, 50mA reverse

current]

Typical Performance Curves

FIGURE 3. VDD BIAS CURRENT

FIGURE 4. ISET SOURCE CURRENT

FIGURE 5. CTIM CURRENT SOURCE

FIGURE 6. CTIM OC VOLTAGE THRESHOLD

4.5

4.0

3.5

3.0

2.5

2.0

020

30

50

80

100

TEMPERATURE (°C)

5.0

10

40

60

70

90

20.2

TEMPERATURE (°C)

0

20

30

50

80

100

10

40

60

70

90

20.0

19.0

19.2

19.4

19.6

19.8

20.50

20.32

20.00

19.66

TEMPERATURE (°C)

0

20

30

50

80

100

10

40

60

70

90

19.50

20.16

19.82

CTIM - 0V

1.89

1.88

1.87

1.86

1.85

1.83

TEMPERATURE (°C)

0

20

30

50

80

100

10

40

60

70

90

1.84

ISL6115, ISL6116, ISL6117, ISL6120

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