LM122 LM322 LM3905 Precision Timers
February 1995
LM122 LM322 LM3905 Precision Timers
General Description
The LM122 series are precision timers that offer great versatility with high accuracy They operate with unregulated supplies from 4 5V to 40V while maintaining constant timing periods from microseconds to hours Internal logic and regulator circuits complement the basic timing function enabling the LM122 series to operate in many different applications with a minimum of external components
National Semiconductor
LM3224 615kHz/1.25MHz Step-up PWM DC/DC Converter (Rev. C) - Converter