Datasheet4U Logo Datasheet4U.com

LM3909 - LM3909 LED Flasher/Oscillator

General 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 onl

Key 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.

📥 Download Datasheet

📁 Similar Datasheet

Part Number Description Manufacturer
LM3900 QUADRUPLE NORTON OPERATIONAL AMPLIFIER Texas Instruments
LM3900 QUAD SINGLE SUPPLY OPERATIONAL AMPLIFIERS Motorola
LM39100 1A Low-Voltage Low-Dropout Regulator HTC
LM39101 1A Low-Voltage Low-Dropout Regulator HTC
LM39102 1A LOW-VOLTAGE LOW-DROPOUT REGULATOR UTC

Other Datasheets by National Semiconductor (now Texas Instruments)

Part Number Description
LM390 LM390 1W Battery Operated Audio Power Amplifier
LM3900 Quad Amplifiers
LM3901 Quad Amplifiers
LM3905 Precision Timers
LM391 Audio Power Driver

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
LM3909 LED Flasher Oscillator February 1995 LM3909 LED Flasher Oscillator General 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 optimized for low power drain and operation from weak batteries so that continuous operation life exceeds that expected from battery rating Application is made simple by inclusion of internal timing resistors