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UEE Series

Isolated, High-Density, Eighth-Brick

DOSA Low Profile DC/DC Converters

MDC_UEE_Series.A04 Page 3 of 29

FUNCTIONAL SPECIFICATIONS, UEE-3.3/15-D48

ABSOLUTE MAXIMUM RATINGS

Conditions

➀

Minimum

Typical/Nominal

Maximum

Units

Input Voltage, Continuous

0

80

Vdc

Input Voltage, Transient

Operating or non-operating,

100 mS max. duration

0

100

Vdc

Isolation Voltage

Input to output

2250

Vdc

Input Reverse Polarity

None, install external fuse

None

Vdc

On/Off Remote Control

Power on or off, referred to -Vin

-0.8

13.5

Vdc

Output Power

050

W

Output Current

Current-limited, no damage,

short-circuit protected

015

A

Storage Temperature Range

Vin = Zero (no power)

-55

125

°C

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.

INPUT

Conditions

➀ ➂

Operating voltage range

36

48

75

Vdc

Recommended External Fuse

Fast blow

10

A

Start-up threshold

Rising input voltage

33

34

35

Vdc

Undervoltage shutdown

Falling input voltage

31

32

33

Vdc

Overvoltage shutdown

None

Vdc

Reverse Polarity Protection

None, install external fuse

None

Vdc

Internal Filter Type

Pi

Input current

Full Load Conditions

Vin = nominal

1.15

1.18

A

Low Line

Vin = minimum

1.53

1.58

A

Inrush Transient

0.01

0.03

Output in Short Circuit

72

100

mA

No Load

Iout = minimum, unit = ON

30

50

mA

Standby Mode (Off, UV, OT)

4.6

10

mA

Reflected (back) ripple current

➁

Measured at input with specified filter

30

mA, P-P

GENERAL and SAFETY

Efficiency

Vin = 48V, full load

88.0

90.0

%

Vin = min, full load

88.0

90.0

%

Isolation

Isolation Voltage, input to output

No baseplate

2250

Vdc

Isolation Voltage, input to baseplate

N/A

N/A

Vdc

Isolation Voltage, output to baseplate

N/A

N/A

Vdc

Insulation Safety Rating

basic

Isolation Resistance

10

MΩ

Isolation Capacitance

1000

pF

Safety

Certified to UL-60950-1, CSA-C22.2 No.60950-1,

IEC/EN60950-1, 2nd edition (pending)

Yes

Calculated MTBF

Per Telcordia SR-332, issue 1, class 3, ground

fixed, Tcase = +25°C

2.3

DYNAMIC CHARACTERISTICS

Fixed Switching Frequency

300

330

360

KHz

Startup Time

Power on to Vout regulated

10

mS

Startup Time

Remote ON to Vout regulated

10

mS

Dynamic Load Response

50-75-50% load step, settling time to within

±1% of Vout

220

300

μSec

Dynamic Load Peak Deviation

same as above

±150

±200

mV

FEATURES and OPTIONS

Remote On/Off Control

➃

“N” suffix:

Negative Logic, ON state

ON=Ground pin or external voltage

-0.8

1

Vdc

Negative Logic, OFF state

OFF=Pin open or external voltage

2.5

13.5

Vdc

Control Current

sinking

1

2

mA

“P” suffix:

Positive Logic, ON state

ON=Pin open or external voltage

2.5

13.5

V

Positive Logic, OFF state

OFF=Ground pin or external voltage

-0.8

1

V

Control Current

sinking

1

2

mA

BasePlate

"B" suffix

N/A

Conformal Coating

"H" suffix

optional