LM3909 datasheet(5/8 Pages) NSC

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LM3909 Folha de dados(PDF) 5 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.

Nome de Peças	LM3909

Descrição Electrónicos	LM3909 LED Flasher/Oscillator

PDF	8 Pages

Scroll/Zoom	100%

Fabricante Electrônico	NSC [National Semiconductor (TI)]

Página de início	http://www.national.com

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5 / 8 page

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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