Driver ICN2051


LED Display

The ICN2051 is a 16-channel PWM constant current sink LED driver for 1:8 time multiplexing applications. The constant-current value of all 16 channels is set by a single external resistor.
ICN2051 converts serial input date into the gray scale of each pixel by a 16-bit shift register.ICN2051 detects individual LED open errors without extra components. ICN2051 also integrated pre-charge circuit for ghosting reduction.
The ICN2051 exploits precise current regulation technology, with both channel-to-channelerr or and chip-to-chip error less than 2.0%.
• 16constant-current output channels
• Support time-multiplexing for 1~8 scans
• Output current setting range:
        0.5~30mA×16@VDD=5V constant currentoutput
        0.5~23mA×16@VDD=4.2V constant currentoutput
• Current accuracy
        Between channel :< ±2.0 %(Max.)
        Between ICs :< ±2.0 % (Max.)
• 8 bit current gain:12.5%~200%
• Fast response of output current:
        Fast response of output current(min):20ns@VDD=5V
• Data transfer frequency: fMAX=35MHz(Max)
• Power supply voltage: VDD=3.3~5V
• Operating Temperature: –40°C to +85°C
• Output current equation
    Output current equation
• Pre-charge forghosting reduction
• LED open detection
• Enhanced Circuit for Caterpillar Cancelling

• Low-gray scale enhancement

• Integrating LED protection circuit