LM3909 - LM3909 LED Flasher/Oscillator

National Semiconductor

LM3909 Datasheet Preview — Preview of LM3909 PDF

Datasheet Details

Part number	LM3909
Manufacturer	National Semiconductor
File Size	149.25 KB
Description	LM3909 LED Flasher/Oscillator
Datasheet	LM3909_NationalSemiconductor.pdf

LM3909 Product details

Description

The LM3909 is a monolithic oscillator specifically designed to flash Light Emitting Diodes By using the timing capacitor for voltage boost it delivers pulses of 2 or more volts to the LED while operating on a supply of 1 5V or less The circuit is inherently self-starting and requires addition of only a battery and capacitor to function as an LED flasher Packaged in an 8-lead plastic mini-DIP the LM3909 will operate over the extended consumer temperature range of b 25 C to a 70 C It has been opti

Features

Y Y Y Y Y Y Y Y Operation over one year from one C size flashlight cell Bright high current LED pulse Minimum external parts Low cost Low voltage operation from just over 1V to 5V Low current drain averages under 0 5 mA during battery life Powerful as an oscillator directly drives an 8X speaker Wide temperature range.

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Published: Mar 22, 2005 |