lm494cn National Semiconductor Corporation, lm494cn Datasheet
lm494cn
Related parts for lm494cn
lm494cn Summary of contents
Page 1
... Output control selects single ended or push-pull opera- Y tion Easily synchronized (slaved) to other circuits Y Ordering Information Device Package Code Code LM494IN N16A LM494CJ J16A LM494CN N16A TL H 10056 – 1 June 1989 TL H 10056 – 2 Package Description Molded DIP Ceramic DIP Molded DIP RRD-B30M115 Printed ...
Page 2
Absolute Maximum Ratings If Military Aerospace specified devices are required please contact the National Semiconductor Sales Office Distributors for availability and specifications Storage Temperature Range Ceramic DIP b Molded DIP b Operating Temperature Range Industrial (LM494I) Commercial (LM494C) Lead Temperature ...
Page 3
LM494 Electrical Characteristics V 15V f 10 kHz unless otherwise specified (Continued OSC Symbol Parameter PWM COMPARATOR SECTION (Figure 9) V Inhibit Threshold Voltage THI I b Output Sink Current O (Note Output Source ...
Page 4
Functional Description The basic oscillator (switching) frequency is controlled by an external resistor (R ) and capacitor (C ) The relationship T T between the values and frequency is shown Figure 10 The level ...
Page 5
Typical Applications FIGURE 6 Output Connections for Single Ended FIGURE 7 Error Amplifier Sensing Techniques FIGURE 8 Slaving Two or More Control Circuits TL H 10056 – 10 and Push-Pull Configurations TL H 10056 – 10056 ...
Page 6
Typical Applications (Continued) FIGURE 9 Error Amplifier and Current Limit Typical Performance Characteristics FIGURE 10 Oscillator Frequency vs Timing Resistance Sense Amplifier Output Circuits TL H 10056 – 16 FIGURE 11 Amplifier Voltage Gain vs Frequency 10056 ...
Page 7
Voltage Waveforms Physical Dimensions inches (millimeters) 16-Lead Ceramic Dual-In-Line Package (J) Order Number LM494CJ NS Package Number J16A 10056 – 18 ...
Page 8
... Physical Dimensions inches (millimeters) (Continued) 16-Lead Molded Dual-In-Line Package (N) Order Number LM494CN or LM494IN LIFE SUPPORT POLICY NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF NATIONAL SEMICONDUCTOR CORPORATION As used herein ...