LM3909N National Semiconductor, LM3909N Datasheet - Page 3

• Manufacturer Part Number: LM3909N
• Description: IC LED FLASHER/OSCILLATOR 8-DIP
• Manufacturer: National Semiconductor

Specifications of LM3909N

• Frequency: *
• Voltage - Supply: *
• Operating Temperature: *
• Package / Case: *
• Count: *
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: *LM3909N; LM3909

Typical Applications
Note Nominal flash rate 1 Hz
APPLICATIONS NOTES
Note 1 All capacitors shown are electrolytic unless marked otherwise
Note 2 Flash rates and frequencies assume a
Note 3 Unless noted measurements above are made with a 1 4V supply a 25 C ambient temperature and an LED with a forward drop of 1 5V to 1 7V at 1 mA
forward current
Note 4 Occasionally a flasher circuit will fail to oscillate due to an LED defect that may be missed because it only reduces light output 10% or so Such LEDs can
be identified by a large increase in conduction between 0 9V and 1 2V
Warning Flasher High Voltage Powered
(Continued)(See applications notes below)
g
5% capacitor tolerance Electrolytics may vary
TL H 7969 – 4
TL H 7969 – 5
1 5V Flasher
3
100V
15V
V
6V
a
Note Estimates are made from our tests and manufacturers
data Conditions are fresh batteries and room temperature Clad
or ‘‘leak-proof’’ batteries are recommended for any application
of five months or more Nickel Cadmium cells are not recom-
mended
Size Cell
b
Flash Hz
Nominal
(Continuous 1 5V Flasher Operation)
AA
20% to
C
D
1 7
2
2
Typical Operating Conditions
a
Estimated Battery Life
100% of their stated value
400 F
180 F
180 F
Standard
C
3 months
7 months
1 3 years
T
3 9k
43k
1W
R
1k
S
Type
R
1 5k
1k
1k
15 months
6 months
FB
2 6 years
Alkaline
85V– 200V
V
13V– 50V
5V– 25V
a
TL H 7969– 6
RANGE