TND308 circuits equivalent, graphical data test circuits.
Apply 14 volts to VCC pin, unit will be in shutdown mode. Measure Vref voltage.
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Notes
TND308
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Engineering
The following circuits are the test configurations that were used to obtain the data for the graphical secti.
of the procedure.
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APPLICATION NOTE
NCP1651 NCP1651
1.5 V
13
16
VCC Startup
11 AC Comp 8 FB/SD
10 Ref Fltr 9 AC Input
12 0.1 mF Vref Output 1 IS+ 5
Iavg
7 6
Iavg fltr
14 V 1 mF
+ 0
–1 V
0.5 nF
Ramp
GND 2.
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