GND

GND

0.05W

1%

PTH08080W

2

4

3

1

5

V Adj

O

GND

Inhibit

D1(SeeNote3)

R

=10k

x

SET

W

0.891 V

V

-0.9V

out

-1.82kW

PTH08080W

www.ti.com

SLTS235D – FEBRUARY 2005 – REVISED SEPTEMBER 2013

APPLICATION INFORMATION

Adjusting the Output Voltage of the PTH08080W Wide-Output Adjust Power Modules

number of common bus voltages, along with the actual voltage the resistance produces.

For other output voltages, the value of the required resistor can either be calculated using the following formula,

or simply selected from the range of values given in Table 2. Figure 10 shows the placement of the required

resistor.

Voltages

(Required)

(Standard Value)

(Actual)

348

Ω

5.010 V

3.3 V

1.87 k

Ω

3.315 V

2.5 V

3.74 k

Ω

2.503 V

2 V

6.19 k

Ω

2.012 V

1.8 V

8.06 k

Ω

1.802 V

13.0 k

Ω

1.501 V

27.4 k

Ω

1.205 V

86.6 k

Ω

1.001 V

Open

0.9 V

(1)

greater.

(2)

lesser.

(1)

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

better). Place the resistor as close to the regulator as possible. Connect the resistor directly between pins 4 and 2

using dedicated PCB traces.

(2)

the stability of the regulator.

(3)

16 V or greater.

Copyright © 2005–2013, Texas Instruments Incorporated

Submit Documentation Feedback

7

Product Folder Links :PTH08080W