Application Notes

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PT6360 Series

Adjusting the Output Voltage of the PT6360 Series

of Integrated Switching Regulators

The output voltage of the PT6360 series of power modules

may be adjusted higher or lower than the pre-set voltage

with the addition of a single external resistor. Table 3-1

gives the allowable adjustment range for each model of the

resistor can either be calculated using the formulas given

below, or simply selected from the range of values given

in Table 3-2. Refer to Figure 3-1 for the placement of

Adjust Up:

An increase in the output voltage is obtained

GND (pins 5-8).

Adjust Down:

and (+)Sense (pin 11).

Figure 3-1

can be calculated using the following formulas. Refer to

Figure 3-1 for the placement of the required resistor;

=

k

Ω

=

k

Ω

Where:

R

2

Adjust Up

C

IN

560 µF

(Req'd)

+V

O

COM

COM

+V

IN

+

(R

Adj Down

PT6360

2–4

5–812

9–10

Vin

Vo

Vo(adj)

GND

1

Inh

C

OUT

330 µF

(Optional)

(+)Sense

11

Notes:

possible.

the stability of the ISR.

3. If the remote sense feature is not being used, the adjust

instead of (+)Sense.

Table 3-1

ISR OUTPUT VOLTAGE ADJUSTMENT RANGE AND FORMULA PARAMETERS

Series Pt. No.

PT6361

PT6362

PT6363

PT6364

PT6365

PT6366

PT6367

Vo (nom)

5.0 V

3.3 V

2.5 V

1.8 V

1.5 V

1.2 V

1.0 V

Va (min)

3.35 V

2.6 V

2.0 V

1.52 V

1.31 V

1.1 V

0.95 V

Va (max)

5.5 V

3.63 V

2.8 V

2.1 V

1.82 V

1.52 V

1.32 V

Ro (kΩ

Ω

Ω

Ω

Ω)

10.0

10.2

10.7

10.2

9.76

10.0

10.2

Rs (k

Ω

Ω

Ω

Ω

Ω)

15.0

24.9

24.9

24.9

24.9

24.9

24.9