Dc-dc switching regulator – Powersolve PMQ7861 Series User Manual
Page 2
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
Output Voltage Trimming
PMQ7861
Resistor values are in Ω, Vout is desired output voltage:
Formula:
Rtrim = 3037.8 -200
Vout-1.22
Example:
Trim to 3.3V, Rtrim = 3037.8 -200 = 1260Ω
3.3 -1.22
Output Voltage
Resistor (k
Ω)
1.22V
open cct
1.25V
101.06
1.5V
10.65
1.8V
5.04
2.5V
2.173
3.3V
1.26
5.0V
0.603
12V
0.079
Trim resistors for common output voltages
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