www.ti.com

ADJUSTING THE OUTPUT VOLTAGE OF THE PTH12010X SERIES OF WIDE-OUTPUT ADJUST

R= 10 k

x

SET

W

0.8 V

-R k

S

W

V- V

Omin

(1)

V

I

C

330 F

(Optional)

O

m

C

560 F

(Required)

I

m

GND

V

O

V Sense

O

R

SET

1%

0.1 W

PTH12010x

1

10

4

5

6

2

3

9

7

GND

8

NOTES

PTH12010W, PTH12010L

SLTS205E–JUNE 2003–REVISED APRIL 2006

POWER MODULES

V to 5.5 V for the W-suffix modules, and 0.8 V to 1.8 V for L-suffix modules. The adjustment method requires the

PTH12010W

PTH12010L

5 V

280 Ω

5.009 V

N/A

N/A

3.3 V

2.0 kΩ

3.294 V

N/A

N/A

2.5 V

4.32 kΩ

2.503 V

N/A

N/A

2 V

8.06 kΩ

2.010 V

N/A

N/A

1.8 V

11.5 kΩ

1.081 V

130 Ω

1.800 V

1.5 V

24.3 kΩ

1.506 V

3.57 kΩ

1.499 V

1.2 V

Open

1.200 V

12.1 kΩ

1.201 V

1.1 V

N/A

N/A

18.7 kΩ

1.101 V

1.0 V

N/A

N/A

32.4 kΩ

0.999 V

0.9 V

N/A

N/A

71.5 kΩ

0.901 V

0.8 V

N/A

N/A

Open

0.800 V

For other output voltages, the value of the required resistor can either be calculated, or simply selected from the

Table 3. Adjust Formula Parameters

PT. NO.

PTH12010W

PTH12010L

1.2 V

0.8 V

5.5 V

1.8 V

1.82 kΩ

7.87 kΩ

1. A 0.05 W rated resistor may be used. The tolerance should be 1%, with temperature stability of 100 ppm/°C

(or better). Place the resistor as close to the regulator as possible. Connect the resistor directly between

12

Submit Documentation Feedback