5V, Step-Down,

Current-Mode PWM DC-DC Converters

14

______________________________________________________________________________________

1

2

3

4

8

7

6

5

V+

LX

GND

OUT

CC

SS

REF

SHDN

SO

MAX730A

TOP VIEW

16

15

14

13

12

11

10

9

1

2

3

4

5

6

7

8

V+

V+

LX

LX

N.C.

REF

V+

MAX738A

MAX744A

LX

GND

GND

OUT

CC

SS

N.C.

N.C.

Wide SO

SHDN

____Pin Configurations (continued)

__Ordering Information (continued)

PART

TEMP. RANGE

PIN-PACKAGE

MAX738ACPA

0°C to +70°C

8 Plastic DIP

MAX738ACWE

0°C to +70°C

16 Wide SO

MAX738AC/D

0°C to +70°C

Dice*

MAX738AEPA

-40°C to +85°C

8 Plastic DIP

MAX738AEWE

-40°C to +85°C

16 Wide SO

MAX738AMJA

-55°C to +125°C

8 CERDIP

MAX744ACPA

0°C to +70°C

8 Plastic DIP

MAX744ACWE

0°C to +70°C

16 Wide SO

MAX744AC/D

0°C to +70°C

Dice*

MAX744AEPA

-40°C to +85°C

8 Plastic DIP

MAX744AEWE

-40°C to +85°C

16 Wide SO

MAX744AMJA

-55°C to +125°C

8 CERDIP

*Contact factory for dice specifications.

__________________________________________________________Chip Topographies

LX

GND

REF

SS

SHDN

V+

OUT

CC

0.131"

(3.327mm)

0.116"

(2.946mm)

LX

GND

REF

SS

SHDN

V+

OUT

CC

0.116"

(2.946mm)

0.072"

(1.828mm)

MAX730A

MAX738A/MAX744A

TRANSISTOR COUNT: 274 (MAX730A)

286 (MAX738A/MAX744A);

SUBSTRATE CONNECTED TO V+.