LS7541中文资料TOUCH CONTROL STEP DIMMER LIGHT SWITCH WITH AUTOMATIC GAIN CONTROL (AGC)数据手册LSI/CSI规格书

描述 Description

DESCRIPTION:
The LS7541 is a CMOS integrated circuit which provides trigger pulses for triac phase control of incandescent lamps. The circuits are designed to operate with a wide variety of lamp sizes ranging from small table lamps to large floor lamps. The AGC Loop automatically adjusts Touch Sensitivity to be independent of lamp size.FEATURES:
• Touch Sensitivity guaranteed to 600pF Touch Plate Capacitance.
• Touch Operation independent of line plug polarity.
• Pin selection of three available Brightness Step Sequences.
• Minimal external components.
• AGC Loop stabilizes immediately after Power-Up.
• Brightness state is Off after AC power applied.
• Brightness state is unchanged if AC power interrupted for < 0.5 sec.
• Advanced CMOS design for reliable operating characteristics and low power.
• 50/60 Hz Line Frequency.
• 5V Operation (VDD - VSS).
• LS7541 (DIP); LS7541-S (SOIC)APPLICATIONS:
• Screw-in and built-in adapter modules for converting
table and floor lamps to touch control for step dimming.
• On-Off touch control of under-cabinet fluorescent lamps.