DESCRIPTION
MT7605 is a segmented linear constant - current LED driver. It operates in linear mode, according to the segment LED voltage drop automatically turns on different LED string without external settings to simplify the system design. No electrolytic capacitor, Inductor, transformer are needed, low BOM cost is achieved. MT7605 can drive three segment LED strings. When the input voltage varies, it lights up different segment LED strings automatically. In the one AC cycle, the LED light up time increases. This way, both efficiency and power factor improved. The PFC is as high as 0.99, THD can be less than 15%. With Maxic’s proprietary current regulation method, MT7605 achieves ±3% accuracy of LED current. In addition, each segment of LED current can be set differently by individual sense resistors.

FEATURES
Segmented linear constant - current LED driver
Turns on different segment LED strings automatically based on LED voltage drop
Each segment LED current can be flexibly setting with external sense resistor
High precision constant LED current (±3%)
Peak LED current: 60mA
Highest PFC is 0.99, THD is less than 15%
Over temperature protection
Lower output current gradually at high temperature
Built-in power MOSFET simplifies peripheral design
Available in ESOP8 package