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http://www.union-ic.com Rev.05 Mar.2014

2/13

UM4750

Pin Description

Naming Information

UM4750

Channel 1 Output Voltage

Package Type

S: SOT23-6

DA: DFN6 2.0×2.0

DB: DFN8 3.0×3.0

-

Channel 2 Output Voltage

1

VIN

GND

EN1

EN2

VOUT2

VOUT1

2

3

4

5

6

7XX

Marking Pin1

M: Month Code

UM4750DA-xx

DFN6 2.0×2.0

1

2

3

4

8

7

6

5

GND

VIN

EN2

EN1

NC

VOUT1

NC

GND

VOUT2

7XX

M: Month Code

UM4750DB-xx

DFN8 3.0×3.0

Pin Number

Symbol

Function

UM4750S-xx

UM4750DA-xx

UM4750DB-xx

1

5

5

VOUT2

Channel2 output voltage

2

2

6

GND

Ground

3

4

3

EN2

Enable2 Input, Active High

4

3

2

EN1

Enable1 Input, Active High

5

1

1

VIN

Power Supply

6

6

8

VOUT1

Channel1 output voltage

-

-

4,7

NC

No connection