S4723MB

Overview
S4723MB is a switch dimming color-tuning controller with state memory function. It has three control ports. It can realize three-stage memory switch dimming by adjusting the current limiting resistor of the constant current master. It can also be combined with a linear master control to control three light sources to achieve three-way memory switch color-tuning. The chip sets the state cut window time Tsw (typical value 3.2S). The light-off time exceeds the state switching window time. The chip will remember the state before the light is turned on. The light-off time is smaller than the state switching window time. The light-off time can realize state adjustment, which increases the convenience of use.

S4723MB determines the operation of the input switch by detecting the AC signal, and switches the three control ports according to the detection results. Three control ports can drive MOS tubes and thyristors (the linear color scheme can be combined with our company's SCR093S with built-in three-way quality gates to achieve a low-cost solution).

S4723MB is packaged in SOP-8

Features

• Status order: L1→L2→L3
• With status memory function, it makes it more convenient for students to
• State storage time exceeds 10 years
• The number of switches can reach more than 100,000 times (the memory function is normal)
• 1S internal switch resets twice
• Status switch window time internal juice 3.2S
• Built-in voltage limiting circuit for wider power range

Application

• LED power supply for switching dimming and color tuning

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