EL7564CMZ Просмотр технического описания (PDF) - Intersil

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производитель

EL7564CMZ

Monolithic 4 Amp DC/DC Step-Down Regulator

Intersil 

EL7564

Typical Performance Curves (Continued)

VIN=5V

2

1.6

VO=3.3V

VO=2.8V

1.2

0.8

VO=1.8V

0.4

0

0 0.5 1 1.5 2 2.5 3 3.5 4

OUTPUT CURRENT IO (A)

FIGURE 3. EL7564CM TOTAL CONVERTER POWER LOSS

1.8

1.6

1.4

1.2

VO=3.3V

1

0.8

0.6

VO=1.8V

0.4

0.2

0

0 0.5 1 1.5 2 2.5 3 3.5 4

IO (A)

FIGURE 4. EL7564CRE TOTAL CONVERTER POWER LOSS

VO=3.3V

3.325

3.315

VIN=5.5V

3.305

3.295

VIN=5V

3.285

VIN=4.5V

3.275

0.5

1

1.5

2

2.5

3

3.5

4

LOAD CURRENT IO (A)

FIGURE 5. EL7564CM 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. EL7564CM θJA vs COPPER AREA

6

VO=3.3V

1.5

1

VIN=4.5V

0.5

VIN=5V

0

-0.5

VIN=5.5V

-1

-1.5

0

1

2

3

4

IO (A)

FIGURE 6. EL7564CRE LOAD REGULATION

CONDITION:

EL7564RE THERMAL PAD SOLDERED TO 2-LAYER

PCB WITH 0.039” THICKNESS AND 1 OZ. COPPER

ON BOTH SIDES

50

45

40

35

30

25

1

1.5

2

2.5

3

3.5

4

PCB AREA (in2)

FIGURE 8. EL7564CRE THERMAL RESISTANCE vs PCB

AREA - NO AIRFLOW

FN7297.3

May 9, 2005

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