LM3909 Datasheet, PDF (2/8 Pages) National Semiconductor (TI) – LM3909 LED Flasher/Oscillator

Absolute Maximum Ratings
If Military Aerospace specified devices are required
please contact the National Semiconductor Sales
Office Distributors for availability and specifications
Power Dissipation
500 mW
V^a Voltage
6 4V
Operating Temperature Range
Lead Temperature (Soldering 10 sec )
b25 C to a70 C
260 C
Electrical Characteristics
Parameter
Supply Voltage
Operating Current
Flash Frequency
High Flash Frequency
Compatible LED Forward Drop
Peak LED Current
Pulse Width
Conditions
(Applications Note 3)
(In Oscillation)
300 mF 5% Capacitor
0 30 mF 5% Capacitor
1 mA Forward Current
350 mF Capacitor
350 mF Capacitors at Amplitude
Min
1 15
0 65
1 35
Typ
0 55
10
11
45
60
Max
60
0 75
13
21
Units
V
mA
Hz
kHz
V
mA
ms
Typical Applications (See applications notes on following page)
Triac Trigger
Provides 40 mA 10 ms pulses at about 8 kHz
Triac gate may be pulse transformer isolated if
desired
TL H 7969 – 3
2