B

-XT

Series

Series

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Technical Enquiries-Email:tech@microdc.cn Tel:0086-20-86000646

Page 1 of 6

SELECTION

GUIDE

Order code

Input

Output

Efficiency

Isolation

Capacitance

Voltage(VDC)

Current (mA)

Voltage

(VDC)

Current

(mA)

(%.Typ.)

Nominal

Rated Load

pF

KHrs

B0303XT

3.3

410

3.3

303

81

29

5348

B0305XT

3.3

390

5

200

83

30

3847

B0309XT

3.3

400

9

111

74

34

3134

B0312XT

3.3

400

12

83

76

40

3473

B0315XT

3.3

400

15

66

81

42

2473

B0503XT

5

270

3.3

303

85

31

5515

B0505XT

5

294

5

200

83

33

6857

B0505NXT

5

260

5

200

86

42

3933

B0506XT

5

278

6

167

83

43

6677

B0509XT

5

267

9

111

85

38

5501

B0512XT

5

260

12

83

74

44

3957

B0515XT

5

256

15

66

78

43

2747

B1205XT

12

124

5

200

80

50

4683

B1209XT

12

114

9

111

80

72

4008

B1212XT

12

113

12

83

85

89

3121

B1215XT

12

111

15

66

81

100

2316

1. Calculated using MIL-HDBK-217FN2 with nominal input voltage at full load.

All specifications typical at TA=25℃, nominal input voltage and rated output current unless otherwise specified.

MODEL

SELECTION

B

B

05

05

X

T

⑤

①

Product Series

②

Input Voltage

③

Output Voltage

④

Fixed Input

⑤

SMD Package

MICRODC R ESERVES THE COPYRIGHT

1W, FIXED INPUT, ISOLATED SINGLE OUTPUT SMD DC-DC CONVERTER

FEATURES

FEATURES

◆

◆

Short Circuit Protection(automatic recovery)

◆

I/O isolation voltage 1000VDC

◆

Operating Temperature: -40℃～﹢85℃

◆

High efficiency up to 78%

◆

Toroidal magnetics

◆

Small SMD package with footprint

◆

◆

Lead frame technology

◆

Multi-layer ceramic capacitors

◆

Custom solutions available

APPLICATIONS

APPLICATIONS

The B-XT series are miniature,1W DC/DC

converters with high isolation in a SMD package.

With a new package design these converters are

qualified for the higher temperatures requested

by lead-free reflow solder processes. With the

small footprint, these converters are the ideal

solution for board level power distribution,mainly

for applications in the industrial and telecom field.

For automated SMD production lines the devices

can be supplied in standard tape and reel

package.

Input

Characteristics

Parameter

Conditions

Min.

Typ.

Max.

Units

Voltage range

Continuous operation, 3.3V input

2.97

3.3

3.63

VDC

Continuous operation, 5V input

4.5

5

5.5

VDC

Continuous operation, 12V input

10.8

12

13.2

VDC

Start up time

30

47

mA p-p

Characteristics

Parameter

Conditions

Min.

Typ.

Max.

Units

Isolation voltage

Flash tested for 1 second

1000

VDC

Resistance

Viso= 1000VDC

10

GΩ

General

Characteristics

Parameter

Conditions

Min.

Typ.

Max.

Units

Switching frequency

All output types

110

kHz

Absolute

Ratings

Parameter

Conditions

Lead temperature 1.5mm from case for 10 seconds

300℃

Internal power dissipation

600mW

Input voltage V , B03 types

5.5V

Input voltage Vin, B05 types

7V

Input voltage Vin, B12 types

15V