FEATURES:
• Input interface to a LDR or a photo transistor
• Programmable Duration Selection
• Shunt regulator
• 50Hz / 60Hz time base selection
• Relay Driver output
• 6.0V ± 0.75V operating voltage range (VDD – VSS)
• LS7217 (DIP), LS7217-S (SOIC) – See Figure 1
APPLICATIONS
Lighting control for outdoor area lighting, street lighting, parking lot
lighting, billboards lighting
DESCRIPTION
The 7217 is a programmable Timer IC designed to turn on a relay at
night and turn off the relay at dawn or after a selectable number of
hours. Figure 2 shows a typical application schematic.
