The Fifth Generation, Ultra Small Size, Isolated DC-DC Converter

1.5Watt BTA Series

9

DC-DC Converter

BDD2008

1203

6. Standard Connection Circuit

1-BTA-S Series

1

3

2

6

5

7

+Vin

-

Vin

ON/OFF

SW1

+Vin

C1

C3

C2

Load

SW2

-

Vout

Vadj

+Vout

BTA-S

Series

SW1

Open = Output OFF

Short = Output ON

C1: 4.7μF

SW2

Vout = 3.3V→3.6V

= 5V→6V

= 12V→15V

Short:

Open:

= 3.3V, 5V, 12V

Vout

C2: 4.7μF

C3: 0.47μF

2-BTA-W Series

1

3

2

6

5

7

+Vin

-

Vin

ON/OFF

SW1

+Vin

C1

C5

C3

Load

SW2

-

Vout

Vadj

+Vout

BTA-W

Series

SW1

Open = Output OFF

Short = Output ON

C2

C4

Load

Common

4

C1:

SW2

Short: Vout = ±15V

Open: Vout = ±12V

C2, C3:

C4, C5:

4.7μF

0.47μF

4.7μF

7. Function±

7-1 ON/OFF Control

By using ON/OFF Control, output voltage can be ON/OFF controlled without charging or discharging input.

Between −Vin pin (Pin3) and ON/OFF pin (Pin2)

Low (0 - 0.4V 1mA max.) : Output ON

Open (Max. +Vin voltage will generate) : Output OFF

or

1

ON/OFF

-

Vin

+Vin

3

2