For technical support and more information, see inside back cover or visit www.ti.com

VID 3

VID 2 VID 1 VID 0

11

11

11

10

11

01

11

00

10

11

10

10

10

01

10

00

01

11

01

10

01

01

01

00

00

11

00

10

00

01

00

00

*For STBY pin:

Open

=Output Enabled

Ground

=Output Disabled

Pin Function

1

VID 0

2

VID 1

3

VID 2

4

VID 3

5

VID 4

6

STBY *

7

Do Not Connect

8

Do Not Connect

9

Do Not Connect

10

Do Not Connect

11

VID Common

Notes:

i) Logic 0 = Connect to VID Common

ii) Logic 1 = Open circuit (no pull-up resistors)

iii) VID3 and VID4 may not be changed while the unit is operating.

iv) See page 4 for PT8124 (VRM 8.5) programming information.

PT8120 Series

Pin Function

12

13

14

15

16

17

GND

18

GND

19

GND

20

GND

21

GND

Pin Function

22

GND

23

24

25

26

27

28

29

30

31

Remote Sense

30-A 12-V Input Programmable

Integrated Switching Regulator

PT8121

(VRM 8.3/8.4)

VID 4=1

VID 4=0

Vout

Vout

2.00V

1.30V

2.10V

1.35V

2.20V

1.40V

2.30V

1.45V

2.40V

1.50V

2.50V

1.55V

2.60V

1.60V

2.70V

1.65V

2.80V

1.70V

2.90V

1.75V

3.00V

1.80V

3.10V

1.85V

3.20V

1.90V

3.30V

1.95V

3.40V

2.00V

3.50V

2.05V

PT8122

(VRM 9.0)

VID 4=1

VID 4=0

Vout

Vout

1.075V

1.475V

1.100V

1.500V

1.125V

1.525V

1.150V

1.550V

1.175V

1.575V

1.200V

1.600V

1.225V

1.625V

1.250V

1.650V

1.275V

1.675V

1.300V

1.700V

1.325V

1.725V

1.350V

1.750V

1.375V

1.775V

1.400V

1.800V

1.425V

1.825V

1.450V

1.850V

PT8123

(Custom Code)

VID 4=1

VID 4=0

Vout

Vout

0.800V

1.200V

0.825V

1.225V

0.850V

1.250V

0.875V

1.275V

0.900V

1.300V

0.925V

1.325V

0.950V

1.350V

0.975V

1.375V

1.000V

1.400V

1.025V

1.425V

1.050V

1.450V

1.075V

1.475V

1.100V

1.500V

1.125V

1.525V

1.150V

1.550V

1.175V

1.575V

PT8125

(Custom Code)

VID 4=1

VID 4=0

Vout

Vout

4.5V

6.1V

4.6V

6.2V

4.7V

6.3V

4.8V

6.4V

4.9V

6.5V

5.0V

6.6V

5.1V

6.7V

5.2V

6.8V

5.3V

6.9V

5.4V

7.0V

5.5V

7.1V

5.6V

7.2V

5.7V

7.3V

5.8V

7.4V

5.9V

7.5V

6.0V

7.6V

† See page 4 for PT8124 pin-out