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http://www.union-ic.com Rev.01 Apr.2014

2/11

UM3730

Pin Configurations

Top View

Pin Description

1

2

3

4

VIN

VOUT

GND

EN

EP

XX

M: Month Code

UM3730DA-xx

DFN4 1.0×1.0

1

2

3

4

5

IN

GND

EN

NC

OUT

1

2

3

4

5

XXX

M: Month Code

UM3730P-xx

SOT353

Pin

Number

Pin Name

DFN4 1.0×1.0

Pin Name

SOT353

Pin Function

1

VOUT

-

Output Voltage

1

-

IN

Supply Input

2

GND

GND

Ground

3

EN

EN

Enable Input: Active High. High=ON,

Low=Off

4

VIN

-

Supply Input

4

-

NC

No connect.

5

-

OUT

Output Voltage

EP

HS Pad

-

Exposed Heat Sink Pad