方案LED DisplayConstant Current DriverICN2028

ICN2028

Constant Current Driver

Description
The ICN2028 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 ICN2028 exploits current precision controlling technologywhich makes error between ICs less than ±2.5%, anderr or between channels less than ±3.0%. At ICN2028 output stage16-regulated output ports are designed to provide uniform and constant current sinks for driving LEDs within a large range of forward voltage(VF) variations.
ICN2028 contains two 16-bit shift registers and latches which convert serial input data intoparallel output format. For integrated dual latch, ICN2028 could get higher refresh rate.
Features
• 16-channel constant current output
• Output current setting range
        3~45mA×16@VDD=5Vconstant current output
        3~25mA×16@VDD=3.3Vconstant current output
• Current accuracy
        Between channel :< ±3.0%
        Between ICs :< ± 2.5%
• Fast response of output current,
        (min):60ns@VDD=5V
• I/O: Schmitt trigger input
• Data transfer frequency:fMAX=25MHz(Max)
• Power supply voltage: VDD=3.35V
• Operating Temperature: –40°C to +85°C
• LED Protection

• Low-Gray Scale Enhancement

• Integrated Dual Latch for higher refresh rate


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