Input Voltage:

D5A Models

10 Volts

D12A Models

22 Volts

D24E Models

44 Volts

D48A and D48E Models

80 Volts

Input Reverse-Polarity Protection

Current must be <6A. Brief

duration only. Fusing recommended.

Output Overvoltage Protection

5/5.2V Outputs

6.8 Volts, limited duration

12V Outputs

15 Volts, limited duration

15V Outputs

18 Volts, limited duration

Output Current

Current limited.

Max. current and

short-circuit duration model

dependent.

Storage Temperature

–40 to +105°C

These 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.

Absolute Maximum Ratings

TECHNIC AL NO TES

➀ These power converters require a minimum 10% loading to maintain specified regulation.

Operation under no-load conditions will not damage these devices; however they may

not meet all listed specifications.

➁ Application-specific input/output filtering can be recommended and perhaps added

internally upon request for scheduled, quantity orders. Contact DATEL Applications

Engineering for details.

➂ Devices can be screened or modified for higher guaranteed isolation voltages.

Contact DATEL Applications Engineering for details.

➃ Except for 3.3V devices which have no protection.

Performance/Functional Specifications

➀

Input

Input Voltage Range:

D5A Models

4.7-7.25 Volts (5V nominal)

D12A Models

9-18 Volts (12V nominal)

D24E Models

18-36Volts (24V nominal

D48A Models

18-75 Volts (48V nominal)

D48E Models

36-72 Volts (48V nominal)

Input Current

See Ordering Guide

Input Filter Type

➁

Pi

Overvoltage Shutdown:

D5A Models

None

D12A Models

20 Volts

D24E Models

40 Volts

D48A and D48E Models

76 Volts

Reverse-Polarity Protection

Yes (Instantaneous, 6A maximum)

Output

±1%, maximum

Temperature Coefficient

±0.02% per °C

Ripple/Noise (20MHz BW)

➁

See Ordering Guide

Line/Load Regulation

See Ordering Guide

Efficiency

See Ordering Guide

Isolation Voltage

➂

1500Vdc, guaranteed

Isolation Capacitance

250pF

Current Limiting

Auto-recovery

Overvoltage Protection

➃

Zener/transorb clamp, magnetic feedback

Dynamic Characteristics

Transient Response (50% load step)

200µsec max. to ±1.5% of final value

Switching Frequency

165kHz (±15kHz)

Flammability

UL94V-0

Environmental

Operating Temperature (Ambient):

Without Derating

–40 to +60/65/70°C (Model dependent)

With Derating

to +100°C (See Derating Curves)

Storage Temperature

–40 to +105°C

Physical

Dimensions

2" x 1" x 0.375" (51 x 25 x 9.5mm)

Shielding

5-sided

Case Connection:

D5A, D12A and D24E Models

D48A and D48E Models

Case Material

Corrosion resistant steel with

non-conductive, epoxy-based, black

enamel finish and plastic baseplate

Pin Material

Gold plate over copper alloy

Weight

1.3 ounces (37 grams)

Floating Outputs

Since these are isolated DC/DC converters, their outputs are "floating."

Designers will usually use the output Common (pin 5) as the ground/return

of the load circuit. You can, however, use the +Output (pin 3) as ground/

return to effectively reverse the output polarity.

Filtering and Noise Reduction

All A-Series UWR 6-10 Watt DC/DC Converters achieve their rated ripple

and noise specifications without the use of external input/output capaci-

tors. In critical applications, input/output ripple and noise may be further

reduced by installing electrolytic capacitors across the input terminals and/

or low-ESR tantalum or electrolytic capacitors across the output terminals.

The caps should be located as close to the power converters as possible.

Typical values are listed in the tables below. In many applications, using

values greater than those listed will yield better results.

To Reduce Input Ripple

D5A Models

47µF, 10V

D12A and D24E Models

20µF, 50V

D48A and D48E Models

10µF, 100V

To Reduce Output Ripple

5/5.2V Outputs

47µF, 10V, Low ESR

12/15V Outputs

22µF, 20V, Low ESR

In critical, space-sensitive applications, DATEL may be able to tailor the

internal input/output filtering of these units to meet your specific require-

ments.

UWR Series

Single Output, High Reliability, 2" x 1", 6-10 Watt, DC-DC Converters

MDC_UWR6-10W Series.D02 Page 3 of 6

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