IRPLLNR4 International Rectifier, IRPLLNR4 Datasheet - Page 17

• Manufacturer Part Number: IRPLLNR4
• Description: BALLAST UNIV INP FLUOR IR2166
• Manufacturer: International Rectifier

Specifications of IRPLLNR4

• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: *IRPLLNR4

The components REOL1, REOL2, REOL3, REOL4, CEOL are used for end of life protection. The
end-of-life window comparator is enabled at the beginning of the Run mode. In case of end-of-life the
voltage on pin SD of the IR2166 will fall outside the range of the internal window comparator 1-3V
causing it to go to Fault mode (fig. 11).
www.irf.com
Inside the
filament open): Upper trace: voltage across
IR2167
Figure 9: Hard-switching condition (upper
RCS, Middle trace: LO pin voltage,
2V
Lower trace: HO-VS pin voltage
SD
CSD1
CEOL
Figure 11: End-of-Life circuit
A
REOL
REOL4
RD-0602
CRES
Figure 10: Hard-switching condition (upper
filament open): Lamp voltage during Preheat
mode and beginning of Ignition Ramp mode
in the SD pin
in A
when lamp fault is detected
2V
0V
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