RGBx4 PWM LED Driver IC : MY9221
Posted: 08 Aug 2010, 06:03
A small video about MY9221 in our LAB. (Sorry, I don't know if I can post such information here)
Features:
? 3 ~ 5.5V Operating supply voltage
? R/G/B x4 Output Channels
? 3~60mA@5V Constant current output range
? 3~35mA@3.3V Constant current output range
? Current setting by 3 external resistors
? 17V Rated output channels for long LED strings
? ±1%(typ.) LED Current accuracy between channels
? ±2%(typ.) LED Current accuracy between chips
? 10MHz(max.) ~ 70 KHz(min.) clock frequency for EMI reduction data transfer [ patent pending ] (compatible with traditional 20MHz(max.))
? 16 / 14 / 12 / 8 bit grayscale selection
? Built-in internal grayscale clock supports refresh rate >1000Hz@16-bit grayscale, >256KHz@8-bit grayscale
? Grayscale clock frequency selection for High Power LED driving application (min. 33.6KHz)
? Grayscale clock source selection (SSOP & TSSOP only): internal or external
? PWM or APDM control selection [ patent pending ]
? Clock duty recovery for cascading application
? Schmitt trigger input
? Output Current Tr / Tf programmable
? Output Current Bilateral Processing for EMI reduction
? -40°C to +85°C Ambient temperature range
MY9221 SSOP24-150mil-0.635mm (MY9221SS)?TSSOP24-173mil-0.65mm (MY9221TE) and QFN20-4mmx4mm-0.5mm (MY9221QD) samples are available. For further technical and pricing information, customers can reach us by our website www.my-semi.com.tw / www.my-semi.com or email to info@my-semi.com.tw.
Features:
? 3 ~ 5.5V Operating supply voltage
? R/G/B x4 Output Channels
? 3~60mA@5V Constant current output range
? 3~35mA@3.3V Constant current output range
? Current setting by 3 external resistors
? 17V Rated output channels for long LED strings
? ±1%(typ.) LED Current accuracy between channels
? ±2%(typ.) LED Current accuracy between chips
? 10MHz(max.) ~ 70 KHz(min.) clock frequency for EMI reduction data transfer [ patent pending ] (compatible with traditional 20MHz(max.))
? 16 / 14 / 12 / 8 bit grayscale selection
? Built-in internal grayscale clock supports refresh rate >1000Hz@16-bit grayscale, >256KHz@8-bit grayscale
? Grayscale clock frequency selection for High Power LED driving application (min. 33.6KHz)
? Grayscale clock source selection (SSOP & TSSOP only): internal or external
? PWM or APDM control selection [ patent pending ]
? Clock duty recovery for cascading application
? Schmitt trigger input
? Output Current Tr / Tf programmable
? Output Current Bilateral Processing for EMI reduction
? -40°C to +85°C Ambient temperature range
MY9221 SSOP24-150mil-0.635mm (MY9221SS)?TSSOP24-173mil-0.65mm (MY9221TE) and QFN20-4mmx4mm-0.5mm (MY9221QD) samples are available. For further technical and pricing information, customers can reach us by our website www.my-semi.com.tw / www.my-semi.com or email to info@my-semi.com.tw.