LM3909 Datasheet, PDF (7/8 Pages) National Semiconductor (TI) – LM3909 LED Flasher/Oscillator

Typical Applications (Continued) (See applications notes above)
LED Booster
Incandescent Bulb Flasher
TL H 7969 – 18
Note High efficiency 4 mA drain Continuous appearing light obtained by supplying
short high current pulses (2 kHz) to LEDs with higher than battery voltage available
Emergency Lantern Flasher
Note Flash rate 1 5 Hz
TL H 7969 – 19
Note Nominal flash rate 1 5 Hz
TL H 7969 – 20
7