Typical remote control transmitter and receiver application circuit composed of LC219/LC220A

Published:2011/10/17 22:01:00 Author:Rebekka | Keyword: remote control , transmitter, receiver | From:SeekIC

LC219/LC220A is a multi-function remote control transmitter / receiver integrated circuit. It is generally used in electric fans shift, wave side of the conversion, home appliances and toys, remote control rolling circuit. LC219 transmitter chip block diagram LC219 transmitter chip supply voltage range is 2.5 ~ 6V; Quiescent operating current is less than 5μA; Output drive current IoH ≥ 2mA, IoL ≥ 300μA. It is applicable to high-driven work NPN transistor; Repetition rate of the internal timer is 2 ~ 3Hz, controllable oscillation frequency is lkHz, duty cycle is 50%, pulse width is 0.5ms: modulation oscillation frequency range is 32 ~ 48kHz, Generally it uses 39kHz appropriate election. LC220A receiver chip supply voltage is 4.5 ~ 9V; Quiescent operating current is less than 5μA; Each output drive current is IoH ≥ 2mA, Ioc ≥ lmA; Output short-circuit current is IOH (S) ≥ 8mA, IOL (S) 5mA. It can be connected with LED drive directly or transistors.



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