方案LED DisplayConstant Current DriverICN2038S

ICN2038S

Constant CurrentDriver

Description
The ICN2038S is a 16-channel constant current sink output LED driver. All 16-channels constant current can be set by a single external resistor, which provides users flexibility in controlling the light intensity of LEDs.
The ICN2038S exploits current precision controlling technologywhich makes error between ICs less than ±2.0%, anderr or between channels less than ±2.0%. At ICN2038S output stage,16-regulated output ports are designed to provide uniform and constant current sinks for driving LEDs within a large range of forward voltage(VF) variations.
ICN2038S contains two 16-bit shift registers and latches which convert serial input data into parallel output format. For integrated dual latches, ICN2038S could get higher refresh rate.
Features
• 16-channel constant current output
• Output current setting range
        0.5~45mA×16@VDD=5Vconstant current output
          0.5~25mA×16@VDD=3.3Vconstant current output
Current accuracy
        Between channel :< ±2.0%
        Between ICs :< ± 2.0%
Fast response of output current,
        (min):40ns@VDD=5V
I/O: Schmitt trigger input
Data transfer frequency:fMAX=30MHz(Max)
Power supply voltage: VDD=3.35V
Operating Temperature: –40°C to +85°C
4 bit current gain25%~100%
Adjustable Pre-Charge for Ghosting Reduction
LED Protection Circuit
Enhanced Circuit for Caterpillar Cancelling
Low-Gray Scale Enhancement

Integrated Dual Latches for higher refresh rate

 Dim line at thefirst scan line


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