UC3550

CMOS IC

UNISONICTECHNOLOGIESCO.,LTD

2 of 10

www.unisonic.com.tw

QW-R502-082,A

MARKING INFORMATION

PACKAGE VOLTAGE CODE

MARKING

SOT-25

33:3.3V

50:5.0V

1

2

3

45

U5XX

Lead Plating

Voltage Code

PIN CONFIGURATION

OUT

EXT

CE

GND

NC

1

2

3

45

PIN DESCRIPTION

PIN NO

PIN NAME

DESCRIPTION

1

CE

Chip Enable:

The chip is enabled if a voltage equal to or greater than 1.0V or left floating is applied.

The chip is disabled if a voltage less than 0.3V is applied.

2

OUT

Output voltage monitor, IC internal power supply

3

NC

No connection

4

GND

Ground

5

EXT

External transistor drive