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Need Help in my project
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ashishnet1986 4 years ago
Hello every one, i am working in my led driver project , and i just saw the pwm dimming pin in my driver ic , after checking the datasheet i have found the dimming frequency is 255 to 1000Hz, i was thinking to use NE555 timer ic to this variable dimming, after checking the datasheet if NE555 i confused because this ic can give maximum 200kHz according to calculation. but unfortunately i don't know how to calculate foe 255Hz to 1000Hz. i tried many online calculators for this but i can't trust those websites. please any one help me in this. any one please give me design for this.
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andyfierman 4 years ago
Please read: [https://easyeda.com/forum/topic/How-to-ask-for-help-and-get-an-answer-71b17a40d15442349eaecbfae083e46a](https://easyeda.com/forum/topic/How-to-ask-for-help-and-get-an-answer-71b17a40d15442349eaecbfae083e46a) Read the device datasheet. [http://www.ti.com/lit/ds/symlink/lm555.pdf](http://www.ti.com/lit/ds/symlink/lm555.pdf) [https://www\.diodes\.com/assets/Datasheets/NE555\_SA555\_NA555\.pdf](https://www.diodes.com/assets/Datasheets/NE555_SA555_NA555.pdf) Do the maths. [https://en\.wikipedia\.org/wiki/555\_timer\_IC](https://en.wikipedia.org/wiki/555_timer_IC) > Astable [https://electronicsclub.info/555astable.htm](https://electronicsclub.info/555astable.htm) Play with: [https://easyeda.com/andyfierman/555-timer-simulation](https://easyeda.com/andyfierman/555-timer-simulation)
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