UCE Series

Isolated, High-Density, Eighth-Brick

100W DC/DC Converters

www.murata-ps.com

Input Voltage:

Continuous:

48 Volt input models

75 Volts

Transient (100 mSec. Max.)

48 Volt input models

100 Volts

On/Off Control

+15 Volts

Input Reverse Polarity Protection

5 Amps, 10 sec. max.

Output Overvoltage Protection

Magnetic feedback.

See specifications.

Output Current

Current-limited. Devices can

withstand sustained short circuit

without damage.

Storage Temperature

–40 to +125°C.

Lead Temperature

See soldering guidelines.

Absolute maximums are stress ratings. Exposure of devices to greater than any of these

conditions may adversely affect long-term reliability. Proper operation under conditions

other than those listed in the Performance/Functional Specifications Table is not implied

or recommended.

ABSOLUTE MAXIMUM RATINGS

MDC_UCE.A18 Page 4 of 16

DYNAMIC CHARACTERISTICS

Model Family

Dynamic Load

Response

(50-75-50%

load step) to 1%

of final value,

μSec

Start-up Time

Switching

Frequency

KHz

regulated

(Max.)

Remote On/

regulated

(Max.)

mSec

UCE-1.5/20-D48

100

50

50

480

UCE-1.8/30-D48

150

10

10

400

UCE-2.5/20-D48

100

50

50

350

UCE-3.3/15-D48

200

50

50

480

UCE-3.3/30-D48

50

15

10

380

UCE-5/10-D48

100

50

50

400

UCE-5/20-D48

100 max.

10

10

330

UCE-12/4.2-D48

30

60

60

200

UCE-12/8.3-D48

50

50

50

SPECIFICATIONS, CONTINUED

MISCELLANEOUS CHARACTERISTICS

Model Family

Calculated

Operating

Temperature Range

with derating

(°C)

Operating

PCB

Temperature

(no derating)

Storage

Temperature

Range

(°C)

Thermal

Protection/

Shutdown

(ºC)

Short

Circuit

Current

(A)

Overvoltage

(V) Via

magnetic

feedback

(V)

Short Circuit

Protection

Method

Short Circuit

Relative

Humidity

(non-condensing)

UCE-1.5/20-D48

TBC

−40 to +85

−40 to +120

−55 to

+125

120

5

1.95

Current

limiting,

hiccup

autorestart.

Remove

overload for

recovery.

Continuous,

output

shorted to

ground. No

damage.

to +85°C/85%

UCE-1.8/30-D48

2.8 V. max

UCE-2.5/20-D48

1.8 M HRS

3

UCE-3.3/15-D48

TBC

4.25

UCE-3.3/30-D48

UCE-5/10-D48

2.6 M HRS

110

0.5

7 max.

UCE-5/20-D48

2.7 M HRS

UCE-12/4.2-D48

TBC

125

5

14.5

UCE-12/8.3-D48

2.4 M HRS