器件名称: LS7534_03
功能描述: DIMMER LIGHT SWITCH WITH UP AND DOWN CONTROLS
文件大小: 89.8KB 共8页
简 介:UL
LSI/CSI
LSI Computer Systems, Inc. 1235 Walt Whitman Road, Melville, NY 11747
LSI
LS7534, LS7535 LS7535FT
(631) 271-0400 FAX (631) 271-0405
A3800
DIMMER LIGHT SWITCH WITH UP AND DOWN CONTROLS
PIN ASSIGNMENT - TOP VIEW
June 2003
FEATURES:
Phase-lock loop synchronization allows use as a Wall Switch Brightness control of incandescent lamps with touch plates (LS7534) or pushbutton switches (LS7535) Dual Controls eliminate confusion Soft turn-on /turn-off Controls the "Duty Cycle" from 23% to 88% (conduction angles for AC half-cycles between 41° and 159°, respectively) Operates at 50Hz/60Hz line frequency Input for slow dimming +12V to +18V DC supply voltage (VSS - VDD) LS7534, LS7535, LS7535FT (DIP); - See Figure 1 LS7534-S, LS7535-S, LS7535FT-S (SOIC) APPLICATION: LS7535 is ideal for use in electronic dimmers for “smart-house” type applications because it is designed to be easily controlled by remote switches.
V SS (+V)
1
8
TRIG
DOZE
2
7
V DD (-V )
LS7534
CAP
3
6
DOWN
SYNC
4
5
UP
FIGURE 1
DESCRIPTION:
LS7534 and LS7535 are MOS integrated circuits that are designed for brightness control of incandescent lamps. The outputs of these ICs control the brightness of a lamp by controlling the firing angle of a triac connected in series with the lamp. All internal timings are synchronized with the line frequency by means of a built-in phase-lock loop circuit. The output occurs once every half-cycle of the line frequency. Within the half-cycle, the ou……
