AP1538SDPG-13

P1-P3 P4-P6 P7-P9 P10-P12 P13-P13

AP1538

18V 3A 300KHz BUCK CONVERTER

AP1538 Rev. 5 10 of 13 OCTOBER 2009

DS31451 www.diodes.com © Diodes Incorporated

Top Side Layout Guide

Bottom Side Layout Guide

Functional Description (Continued)

Use vias to conduct the heat into the backside of

PCB layer. The heat sink at output (SW) pins should

be allowed for maximum solder-painted area.

Keep the gap of exposed pads from short circuit.

Recommended exposed-pads gap: 30~40mil

(0.75~1mm)

Brown: IC exposed pads.

Red: recommended layout.

Reference pads layout dimension:

Output: 90 x 50 mil

V

ss: 90 x 60 mil

AP1538

18V 3A 300KHz BUCK CONVERTER

AP1538 Rev. 5 11 of 13 OCTOBER 2009

DS31451 www.diodes.com © Diodes Incorporated

AP1538

+

-

V

SS

EN

C1

R1

R2

FB

Vcc

Output

C3

V

OUT

V

IN

R4

OCSET

C4

C2

Option

C7

C6

R5

Option

L1

+

-

C8

D1

Figure: Layout numbering comparison.

Marking Information

(1) SOP-8L

( Top View )

AP1538

YY

WW

X

X

Logo

Part Number

5

8

41

WW : Week : 01~52; 52

YY

: Year : 08, 09,10~

G : Green

X

: Internal Code

represents 52 and 53 week

(2) SOP-8L-DEP

( Top View )

AP1538

YY

WW

X

X

Logo

Part No.

5

8

41

E

WW

: Week : 01~52; 52

YY

: Year : 08, 09,10~

G : Green

X

: Internal Code

represents 52 and 53 week

SOP-8L-DEP

Functional Description (Continued)

AP1538

18V 3A 300KHz BUCK CONVERTER

AP1538 Rev. 5 12 of 13 OCTOBER 2009

DS31451 www.diodes.com © Diodes Incorporated

Package Information ( All Dimensions in mm )

(1) Package type: SOP-8L

1.27typ

0.3/0.5

7°~9°

4.85/4.95

3.85/3.95

5.90/6.10

0.15/0.25

7°~9°

0.62/0.82

0.10/0.20

Gauge Plane

0.254

Seating Plane

0.35max.

45°

Detail "A"

Detail "A"

1.30/1.50

1.75max.

Land Pattern Recommendation

(Unit: mm)

6x-1.27

8x-1.55

8x-0.60

5.4

0°/8°

(2) Package type: SOP-8L-DEP

1

9

°

(

al

l

s

i

d

e

)

0.35Typ.

4

5

°

4

5

8

R

0

.

1

0.3/0.5

1.27Typ.

4.85/4.95

Seating Plane

Gauge Plane

5.90/6.10

0.62/0.82

0.254

0/0.13

View"A"

View"A"

1.4/1.5

1.63Max.

3.85/3.95

Land Pattem Recommendation

(Unit: mm)

EXPOSED PAD

Bottom view

EXPOSED PAD

1

4

58

1.15Typ.

2.05Typ.

2.15Typ.

0.685

0.713

0.20

0.9

C

L

1.7 1.7

C

L

1

4

5

8

8x-0.60

5.4

2.35

6x-1.27

1.8 1.8

1.0

C

L

0.951.65

C

L

Top View

0.15/0.25

8x-1.55

0

°

/

8

°

P1-P3 P4-P6 P7-P9 P10-P12 P13-P13

AP1538SDPG-13

Mfr. #:

Buy AP1538SDPG-13

Manufacturer:

Diodes Incorporated

Description:

Switching Voltage Regulators BUCK CONV 3A PWM CONTROL

Lifecycle:

New from this manufacturer.

Delivery:

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Payment:

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