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LS7231 Datasheet

Part Number LS7231
Manufacturers LSI Computer Systems
Logo LSI Computer Systems
Description TOUCH CONTROL LAMP DIMMER
Datasheet LS7231 DatasheetLS7231 Datasheet (PDF)

LSI/CSI UL ® LS7231-7234 (631) 271-0400 FAX (631) 271-0405 December 2000 LSI Computer Systems, Inc. 1235 Walt Whitman Road, Melville, NY 11747 A3800 TOUCH CONTROL LAMP DIMMER FEATURES: • Phase-lock loop synchronization allows use in Wall Switch applications. • Provides brightness control of incandescent lamps with touch plates or mechanical switches. • Controls the "duty cycle" from 23% to 88% (conduction angles for AC half-cycles between 41˚ and 158˚, respectively.) • Operates at 50Hz/60Hz .

  LS7231   LS7231






Part Number LS7237
Manufacturers LSI Computer Systems
Logo LSI Computer Systems
Description TOUCH CONTROL LAMP STEP DIMMER
Datasheet LS7231 DatasheetLS7237 Datasheet (PDF)

LSI/CSI UL ® LS7237 (631) 271-0400 FAX (631) 271-0405 April 1995 LSI Computer Systems, Inc. 1235 Walt Whitman Road, Melville, NY 11747 A3800 TOUCH CONTROL LAMP STEP DIMMER FEATURES: • PLL synchronization allows use as a Wall Switch • Provides brightness control of an incandescent lamp with a touch plate or mechanical switch • Can control speed of shaded pole and universal AC motors • Controls the "duty cycle" from 23% to 88% (conduction angles for AC half-cycles between 45˚ and 158˚, respect.

  LS7231   LS7231







Part Number LS7237
Manufacturers LSI
Logo LSI
Description TOUCH CONTROL LAMP STEP DIMMER
Datasheet LS7231 DatasheetLS7237 Datasheet (PDF)

LSI/CSI UL ® LS7237 (631) 271-0400 FAX (631) 271-0405 April 1995 LSI Computer Systems, Inc. 1235 Walt Whitman Road, Melville, NY 11747 A3800 TOUCH CONTROL LAMP STEP DIMMER FEATURES: • PLL synchronization allows use as a Wall Switch • Provides brightness control of an incandescent lamp with a touch plate or mechanical switch • Can control speed of shaded pole and universal AC motors • Controls the "duty cycle" from 23% to 88% (conduction angles for AC half-cycles between 45˚ and 158˚, respect.

  LS7231   LS7231







Part Number LS7234
Manufacturers LSI Computer Systems
Logo LSI Computer Systems
Description TOUCH CONTROL LAMP DIMMER
Datasheet LS7231 DatasheetLS7234 Datasheet (PDF)

LSI/CSI UL ® LS7231-7234 (631) 271-0400 FAX (631) 271-0405 December 2000 LSI Computer Systems, Inc. 1235 Walt Whitman Road, Melville, NY 11747 A3800 TOUCH CONTROL LAMP DIMMER FEATURES: • Phase-lock loop synchronization allows use in Wall Switch applications. • Provides brightness control of incandescent lamps with touch plates or mechanical switches. • Controls the "duty cycle" from 23% to 88% (conduction angles for AC half-cycles between 41˚ and 158˚, respectively.) • Operates at 50Hz/60Hz .

  LS7231   LS7231







Part Number LS7233
Manufacturers LSI Computer Systems
Logo LSI Computer Systems
Description TOUCH CONTROL LAMP DIMMER
Datasheet LS7231 DatasheetLS7233 Datasheet (PDF)

LSI/CSI UL ® LS7231-7234 (631) 271-0400 FAX (631) 271-0405 December 2000 LSI Computer Systems, Inc. 1235 Walt Whitman Road, Melville, NY 11747 A3800 TOUCH CONTROL LAMP DIMMER FEATURES: • Phase-lock loop synchronization allows use in Wall Switch applications. • Provides brightness control of incandescent lamps with touch plates or mechanical switches. • Controls the "duty cycle" from 23% to 88% (conduction angles for AC half-cycles between 41˚ and 158˚, respectively.) • Operates at 50Hz/60Hz .

  LS7231   LS7231







Part Number LS7232NT
Manufacturers LSI Computer Systems
Logo LSI Computer Systems
Description PROXIMITY/TOUCH CONTROL HALOGEN LAMP DIMMER
Datasheet LS7231 DatasheetLS7232NT Datasheet (PDF)

LSI/CSI UL ® LS7232NT (631) 271-0400 FAX (631) 271-0405 LSI Computer Systems, Inc. 1235 Walt Whitman Road, Melville, NY 11747 A3800 PROXIMITY/TOUCH CONTROL HALOGEN LAMP DIMMER FEATURES: • Control of incandescent and transformer coupled halogen lamps. • No-Touch lamp control through optical sensing • PLL synchronization of AC for wall switch application. • Extension input for remote control • Safety-shutdown for transformer malfunction. • Pin-selectable operating modes • Single 5V power suppl.

  LS7231   LS7231







TOUCH CONTROL LAMP DIMMER

LSI/CSI UL ® LS7231-7234 (631) 271-0400 FAX (631) 271-0405 December 2000 LSI Computer Systems, Inc. 1235 Walt Whitman Road, Melville, NY 11747 A3800 TOUCH CONTROL LAMP DIMMER FEATURES: • Phase-lock loop synchronization allows use in Wall Switch applications. • Provides brightness control of incandescent lamps with touch plates or mechanical 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. • Input for slow dimming. • +12V to +18V DC Power Supply voltage. (VSS - VDD) • LS7231 to LS7234 (DIP) - See Figure 1 LS7231-S to LS7234-S (SOIC) DESCRIPTION: LS7231 through LS7234 are a series of monolithic, MOS integrated circuits designed for the control of brightness 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 halfcycle, 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 b.


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