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© Semiconductor Components Industries, LLC, 2009
September, 2009 − Rev. 0
1 Publication Order Number:
AND8425/D
AND8425/D
Detection Voltage Selection
Guidelines for Application
of NCP30X Family Series
Device Application Input Voltage Output Power Topology I/O Isolation
NCP30X Voltage Supervisory Rest IC N/A N/A N/A N/A
Circuit Description
VIN
CD
RESET
GND
Driver Block
for Delay
Capacitor *
Output Stage
Open Drain or
Complementary
Output
* For NCP302/303 Series
Vref
Figure 1. General Block Diagram of NCP30X Family Series
The Figure 1 shows the basic block diagram of NCP30X supervisory family series. It features a highly accurate undervoltage
detector with hysteresis. Some parts also feature an externally programmable time delay generator by adding a delay capacitor
at the CD pin. This combination of features prevents the system from erratic reset operation.
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APPLICATION NOTE
