EL7563 查看數據表（PDF） - Intersil

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EL7563

Monolithic 4 Amp DC/DC Step-Down Regulator

Intersil 

EL7563

Typical Performance Curves (20 Pin SO Package) (Continued)

NOTE: The 28-Pin HTSSOP Package Offers Improved Performance

VIN=3.3V

1.8

1.6

VO=1.8V

1.4

VO=1.2V

1.2

1

0.8

VO=1V

0.6

0.4

VO=2.5V

0.2

0

0 0.5 1 1.5 2 2.5 3 3.5 4

OUTPUT CURRENT IO (A)

FIGURE 3. EL7563CM CONVERTER POWER LOSS vs IO

1.6

1.4

1.2

VO=2.5V

1

0.8

0.6

VO=1.2V

0.4

0.2

0

0

1

2

3

4

IO (A)

FIGURE 4. EL7563CRE TOTAL CONVERTER POWER LOSS

VO=2.5V

2.505

2.5

VIN=3.6V

2.495

2.49

VIN=3.3V

2.485

2.48

VIN=3V

2.475

2.47

2.465

0.5 1 1.5 2 2.5 3 3.5 4

LOAD CURRENT IO (A)

FIGURE 5. EL7563CM LOAD REGULATION

VO=2.5V

0.6

0.4

VIN=3.3V

0.2

0

VIN=3.6V

-0.2

-0.4

VIN=3V

-0.6

-0.8

0 0.5 1 1.5 2 2.5 3 3.5 4

IO (A)

FIGURE 6. EL7563CRE LOAD REGULATION

TEST CONDITION:

CHIP IN THE CENTER OF COPPER AREA

50

46

WITH NO AIRFLOW

42

38

WITH 100 LFPM AIRFLOW

34

1 OZ. COPPER PCB USED

30

1

1.5

2

2.5

3

3.5

4

PCB COPPER HEAT-SINKING AREA (in2)

FIGURE 7. EL7563CM θJA vs COPPER AREA

CONDITION:

EL7563CRE THERMAL PAD SOLDERED TO 2-LAYER

PCB WITH 0.039” THICKNESS AND 1 OZ. COPPER ON

BOTH SIDES

50

45

40

35

30

25

0

1.5

2

2.5

3

3.5

4

PCB AREA (in2)

FIGURE 8. EL7563CRE THERMAL RESISTANCE vs PCB

AREA - NO AIR FLOW

6

FN7296.2

May 13, 2005

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