ICN2053

16-Channel PWM Constant Current LED Sink Driver

Description

The ICN2053 is a 16-channel PWM constant current sink LED driver for 1:32 time multiplexing applications. The constant-current value of all 16 channels is set by a single external resistor.

ICN2053 converts serial input date into the gray scale of each pixel by a 16-bit shift register.ICN2053 detects individual LED open errors without extra components. ICN2053 also integrated pre-charge circuit for ghosting reduction.

The ICN2053 exploits precise current regulation technology, with both channel-to-channel error and chip-to-chip error less than ±2.0%.

Features

  •  16 constant-current output channels

•  Support time-multiplexing for 1~32 scans

•  Output current setting range：

 0.5~25mA×16@V_DD=5V constant current output

 0.5~18mA×16@V_DD=4.2V constant current output

 0.5~10mA×16@V_DD=3.3V constant current output

•  Current accuracy

    Between channel :< ±2.0 %(Max.)

    Between ICs :< ±2.0 % (Max.)

•  8 bit current gain：12.5%~200%

•  Fast response of output current:

  •  Data transfer frequency: f_MAX=35MHz(Max)

•  Power supply voltage: V_DD=3.3～5V

•  Operating Temperature: –40°C to +85°C

•  Output current equation

•  Pre-charge for ghosting reduction

•  LED open detection

•  Enhanced Circuit for Caterpillar Cancelling

•  Low-gray scale enhancement

•  Integrating LED protection circuit

Package