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4. Note the output voltage reading V
OUT1
indicated by VOTLMETER2
5. Apply the required maximum input voltage e.g. V
IN_MAX
= V
OUT_NOM
+ 1.3V
(1)
6. Note the output voltage reading V
OUT2
indicated by VOTLMETER2,
7. Calculate the Line Regulation parameter as:
Reg
LINE
= (V
OUT2
– V
OUT1
) / (V
IN_MAX
– V
IN_MIN
) [V/V]
8. Turn off the electronic load. Turn off the input power supply
9. End of the test
Test Procedure for the Measurement of Load Regulation parameter using
Test Setup 1:
1. Connect the test setup as shown on Figure 1
2. Set the electronic load for the required minimum output current e.g. I
OUT_MIN
=
1mA
3. Apply the desired input voltage e.g. V
IN
= V
OUT_NOM
+ 0.3V
(1)
4. Note the output voltage reading V
OUT1
indicated by VOTLMETER2
5. Set the electronic load for the required maximum output current e.g. I
OUT_MAX
= 150mA
6. Note the output voltage reading V
OUT2
indicated by VOTLMETER2
7. Calculate the Load Regulation parameter as:
Reg
LOAD
= (V
OUT2
– V
OUT1
) / (I
OUT_MAX
– I
OUT_MIN
) [V/A]
8. Turn off the electronic load. Turn off the input power supply
9. End of the test
(1) V
OUT_NOM
is the nominal output voltage level of the regulator. NCP729 operating V
IN
must be in the
range 2.0V ≤ V
IN
≤ 5.5V
