5/14/2012 - 2 - www.onsemi.com
Test Procedure for the Measurement of Line Regulation parameter
using Test Setup 1:
1. Connect the test setup as shown on Figure 1,
2. Set the electronic load for the required load current e.g. I
OUT
= 10mA,
3. Apply the required minimum input voltage e.g. V
IN_MIN
= V
OUT_NOM
+ 0.3V
(1)
,
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]
5. Turn off the electronic load. Turn off the input power supply,
6. End of the test.
(1)
V
OUT_NOM
is the nominal output voltage level of the regulator. NCP702 operating
V
IN
must be in the range 2.0V ≤ V
IN
≤ 5.5V
