4206K

17- OUTPUT LED DRIVER/GPO

GeneralDescription TheMAX6964I2C-compatibleserialinterfacedperipheralprovidesmicroprocessorswith17outputports.Eachoutputisanopen-draincurrent-sinkingoutputratedat50mAand7V.TheoutputsarecapableofdrivingLEDs,orprovidinglogicoutputswithexternalresistivepullup

4206K

17-Output LED Driver/GPO with Intensity Control and Hot-Insertion Protection; ? 400kbps, 2-Wire Serial Interface, 5.5V Tolerant\n? 2V to 3.6V Operation\n? Overall 8-Bit PWM LED Intensity Control\n?? Global 16-Step Intensity Control\n?? Plus Individual 16-Step Intensity Controls\n? Two-Phase LED Blinking\n? High Port Output Current—Each Port 50mA (max)\n? RST Input Clears the Serial Interface and Restores Power-Up Default State\n? Supports Hot Insertion\n? Outputs are 7V-Rated Open Drain\n? Low Standby Current (1.2μA (typ), 3.3μA (max))\n? Small 4mm x 4mm, 0.8mm High Thin QFN Package\n? -40°C to +125°C Temperature RangeApplications\n? LCD Backlights\n? LED Status Indication\n? Keypad Backlights\n? RGB LED Drivers?;

General Description\nThe MAX6964 I2C-compatible serial interfaced peripheral provides microprocessors with 17 output ports. Each output is an open-drain current-sinking output rated at 50mA and 7V. The outputs are capable of driving LEDs, or providing logic outputs with external resistive pullup up to 7V.\nEight-bit PWM current control is also integrated. Four of the bits are global control and apply to all LED outputs to provide coarse adjustment of current from fully off to fully on with 14 intensity steps. Additionally, each output has an individual 4-bit control, which further divides the globally set current into 16 more steps. Alternatively, the current control can be configured as a single 8-bit control that sets all outputs at once.\nEach output has independent blink timing with two blink phases. LEDs can be individually set to be either on or off during either blink phase, or to ignore the blink control. The blink period is controlled by an external clock (up to 1kHz) on BLINK or by a register. The BLINK input can also be used as a logic control to turn the LEDs on and off, or as a general-purpose input (GPI)

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