MY9268QF

The MY9268QF is a 16-bit high-precision constant current LED driver chip from MY-Semi Inc., designed for dynamic scan drive displays. It supports 1/2, 1/4, and 1/8 scan drive modes, offering high refresh rates up to 32000 Hz with 16-bit grayscale resolution (65,536 steps). The chip utilizes M-PDM technology to enhance refresh rates and reduce EMI without increasing the grayscale clock frequency.

It operates within a 3.0V to 5.5V supply voltage range and provides 16 constant current sinking outputs, each capable of up to 55mA at 5V operation. The output current can be set via an external resistor and is programmable in 256 linear steps. The MY9268QF boasts high accuracy with ±1.5% channel-to-channel current difference and ±0.1% current offset versus output voltage variation. It also features a fast 30ns current response time.

This LED driver is available in a 24-pin QFN package suitable for surface mounting. It operates reliably in ambient temperatures from -40°C to +85°C, making it suitable for various LED display and lighting applications.

Key features include its 16-bit M-PDM control, automatic black insertion technology to solve motion blur, and ghosting elimination. The device uses a 4-wire serial input interface and has 4Kbits of internal SRAM for storing grayscale data. The DO pin allows for cascading multiple drivers.