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Specifications subject to change without notice.

WRA_SP-3W & WRB_SP-3W

A/1-2008

Page 1 of 2

WRA_SP-3W & WRB_SP-3W Series

3W, WIDE INPUT, IAOLATED & REGULATED

DUAL/SINGLE OUTPUT DIP DC-DC CONVERTER

FEATURES

PRODUCT PROGRAM

Input

Output

Voltage (VDC)

Current (mA)

Part

Number

Nominal Range

Max*

Voltage

(VDC)

Max

Min

Efficiency

(%, Typ)

WRA0505SP-3W

±5

±300

±30

68

WRA0509SP-3W

±9

±166

±16

70

WRA0512SP-3W

±12

±125

±12

72

WRA0515SP-3W

±15

±100

±10

71

WRB0505SP-3W

5

600

60

68

WRB0509SP-3W

9

333

33

70

WRB0512SP-3W

12

250

25

72

WRB0515SP-3W

5

4.5-9

11

15

200

20

71

WRA1205SP-3W

±5

±300

±30

74

WRA1209SP-3W

±9

±166

±16

76

WRA1212SP-3W

±12

±125

±12

78

WRA1215SP-3W

±15

±100

±10

79

WRB1205SP-3W

5

600

60

76

WRB1209SP-3W

9

333

33

78

WRB1212SP-3W

12

250

25

80

WRB1215SP-3W

15

200

20

79

WRB1224SP-3W

12

9-18

22

24

125

12

81

WRA2405SP-3W

±5

±300

±30

78

WRA2409SP-3W

±9

±166

±16

80

WRA2412SP-3W

±12

±125

±12

82

WRA2415SP-3W

±15

±100

±10

81

WRB2405SP-3W

5

600

60

78

WRB2409SP-3W

9

333

33

80

WRB2412SP-3W

12

250

25

82

WRB2415SP-3W

15

200

20

81

WRB2424SP-3W

24

18-36

40

24

125

12

80

WRA4805SP-3W

±5

±300

±30

78

WRA4809SP-3W

±9

±166

±16

79

WRA4812SP-3W

±12

±125

±12

80

WRA4815SP-3W

±15

±100

±10

81

WRB4805SP-3W

5

600

60

78

WRB4809SP-3W

9

333

33

79

WRB4812SP-3W

12

250

25

80

WRB4815SP-3W

15

200

20

81

WRB4824SP-3W

48

36-72

80

24

125

12

80

*Input voltage can

’t exceed this value, or will cause the permanent damage.

Note: The load shouldn't be less than 10%, otherwise ripple will increase dramatically.

Operation under 10% load will not damage the converter; However, they may not meet all specification

listed.

OUTPUT SPECIFICATIONS

Item

Test conditions

Min

Typ

Max

Units

Output power

Refer to product program

0.3

3

W

Positive voltage accuracy

Refer to recommended circuit

±1

±3

Negative voltage accuracy Refer to recommended circuit

±3

±5

Load regulation

From 10% to 100% load

±0.5

±1*

Line regulation

Input voltage from low to high

±0.2

±0.5

%

Temperature drift (Vout)

Refer to recommended circuit

±0.03

%/

°C

20MHz Bandwidth

75

150

mVp-p

Switching frequency

100% load, nominal input voltage

300

KHz

Wide (2:1) input range

Efficiency up to 82%

Short circuit protection(automatic recovery)

Operating temperature: -40

°C to +85°C

Internal SMD construction

1.5KVDC Isolation

Metal shielding package

No Heat sink required

No external component required

Industry standard Pinout

MTBF>1,000,000 hours

RoHS Compliance

APPLICATIONS

The WRB_SP-3W & WRA_SP-3W Series are

specially designed for applications where a wide

range input voltage power supplies are isolated

from the input power supply in a distributed

power supply system on a circuit board. These

products apply to:

1) Where the voltage of the input power supply

is wide range (voltage range: 2:1);

2) Where isolation is necessary between input

and output(isolation voltage

≤1500VDC);

3) Where the regulation of the output voltage

and the output ripple noise are demanded.

MODEL SELECTION

WRB0512SP-3W

Product Series

Input Voltage

Output Voltage

Package Style

Rated Power

MORNSUN Science & Technology co.,Ltd.

Address: 2th floor 6th building, Hangzhou

Industrial District, Guangzhou, China

Tel: 86-20-38601850

Fax: 86-20-38601272

http://www.mornsun-power.com

*Dual output models unbalanced load:

±5%.

**Test ripple and noise by

“parallel cable” method. See detailed operation instructions at Testing of Power

Converter section, application notes.