LSI Computer Systems LS7232ND
LS7232ND is a MOS integrated circuit designed to control brightness of incandescent lamps. The output of this IC controls the brightness of a lamp by controlling the firing angle of a triac connected in series with the lamp. The output occurs once every half-cycle of the line frequency.| Part No. | LS7232ND |
|---|---|
| Datasheet | LS7232ND Download |
| Manufacturer |  LSI Computer Systems |
| Description | TOUCH CONTROL LAMP DIMMER |
| Buy | Stock & Price |
FEATURES
:● Phase-lock loop synchronization allows use in Wall Switch applications.
● Provides brightness control of incandescent lamps with touch plates or pushbutton switches.
● Controls the duty cycle from 23% to 88% (conduction angles for AC half-cycles between 41˚ and 158˚, respectively.)
● Operates at 50Hz/60Hz line frequency.
● Extension input for remote activation.
● +12V to +18V Power Supply voltage (VSS - VDD).
● LS7232ND (DIP); LS7232ND-S (SOIC ) - See Figure 1
DESCRIPTION
: All internal timings are synchronized with the line frequency by means of a built-in phaselock loop circuit. Within the half-cycle, the output can be positioned anywhere between 158˚conduction angle for maximum brightness and 41˚ conduction angle for minimum brightness in relation to the AC line frequency. The positioning of the output is controlled by applying a low level at the SENS input or a high level at the EXT input. These functions may be implemented with very few interface components, as shown in Figure 5.
