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LM3909 データシート(PDF) 5 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
部品番号 LM3909
部品情報  LM3909 LED Flasher/Oscillator
PDF  8 Pages
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メーカー  NSC [National Semiconductor (TI)]
ホームページ  http://www.national.com
Logo NSC - National Semiconductor (TI)

LM3909 データシート(HTML) 5 Page - National Semiconductor (TI)

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Typical Applications (Continued) (See applications notes above)
Flashlight Finder
TLH7969 – 10
Note
LM3909 capacitor and LED are installed in a white translucent cap on the flashlight’s back end Only one
contact strip (in addition to the case connection) is needed for flasher power Drawing current through the bulb
simplifies wiring and causes negligible loss since bulb resistance cold is typically less than 2X
4 Parallel LEDs
TLH7969 – 12
Note
Nominal flash rate 13 Hz Average IDRAIN e 2 mA
High Efficiency Parallel Circuit
TLH7969 – 13
Note
Nominal flash rate 15 Hz Average IDRAIN e 15 mA
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