TRIM AND REMOTE SENSE (AVAILABLE ON SINGLE OUTPUT MODELS ONLY)

4

SMTR SERIES

30 WATT

®

PIN OUT

BOTTOM VIEW

SMTR SINGLE

FLANGED AND NON-FLANGED

Dot on top of cover indicates pin one.

Dotted line outlines flanged package option.

6

10

7

8

9

12

345

RL

OUTPUT

COMMON

REMOTE SENSE CONNECTION

2 Make connections at load.

SMTR SINGLE OUTPUT CONVERTER

4

3

5

10

1

+VIN

INPUT

COMMON

6

SENSE

RETURN

SENSE

POSITIVE

OUTPUT

2

2

EXTERNAL TRIM CONNECTION

1 Make connections at converter.

RL

OUTPUT

COMMON

SMTR SINGLE OUTPUT CONVERTER

4

3

5

10

1

+VIN

INPUT

COMMON

6

SENSE

RETURN

SENSE

POSITIVE

OUTPUT

1

RT

1

Pin

Single Output

Dual Output

1

Positive Input

Positive Input

2

Inhibit

Inhibit

3

Sense Return

Positive Output

4

Output Common

Output Common

5

Positive Output

Negative Output

6

Positive Sense

Case Ground

7

Case Ground

Case Ground

8

Case Ground

Case Ground

9

Sync

Sync

10

Input Common

Input Common

BOTTOM VIEW

SMTR DUAL

FLANGED AND NON-FLANGED

Dot on top of cover indicates pin one.

6

10

7

8

9

12

345

Dotted line outlines flanged package option.

See Figures 22 and 23 and for dimensions.

See Figures 24 and 25 for dimensions.

Notes for Remote Sense and Trim

1. When trimming output voltage and/or remote sensing, the total output

voltage increase must be less than 0.6 volts at the converters pins to

maintain specified performance.

2. If neither voltage trim nor remote sense will be used, connect pin 3 to

pin 4 and pin 5 to pin 6 or the output voltage will increase by 1.2 volts.

3. CAUTION: The converter will be permanently damaged if the positive

remote sense (pin 6) is shorted to ground. Damage may also result if

the output common or positive output is disconnected from the load with

the remote sense leads connected to the load.

Trim Formulas

Vout = desired output voltage; Rt = trim resistor

3.3V: Rt = 1300 * Vout – 4304

1.2475

5V:

Rt = 1300 * Vout – 6512

1.2475

12V: Rt = 1300 * Vout – 15631

1.2475

15V: Rt = 1300 * Vout – 19498

1.2475