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Dc-dc switching regulator – Powersolve PMQ7250 Series User Manual

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Powersolve Electronics Ltd. 8A Arnhem Road, Newbury, RG14 5RU. England

Tel: 01635 521858 Fax: 01635 523771 Email: [email protected]

www.powersolve.co.uk

DC-DC Switching Regulator

Test Configurations

Trim resistors for common output voltages

PMQ7250-1 PMQ7250-2

Output Voltage Trimming

Resistor values are in Ω, Vout is desired output voltage:

Formula: PMQ7250-1

Formula: PMQ7250-2

Rtrim = 10500 -3480 = Resistor Value

Rtrim = 10500 -1000 = Resistor Value

Vout-3.018

Vout-5.021

Example: Trim to 5V

Example: Trim to 12V

Rtrim = 3037.8 -3480 = 1817Ω

Rtrim = 10500 -1000 = 504Ω

5 -3.018

12 -5.021

V out

Resistor (kΩ)

Vout

Resistor (kΩ)

3V

open cct

5V

open cct

4V

7.212K

6V

9.72K

5V

1.817K

7V

4.3K

6V

0.041K

8V

2.525K

9V

1.64K

10V

1.11K

11V

0.756K

12V

0.505K

13V

0.316K

14V

0.169K

15V

0.0522K

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