MAX6968AUE+

The MAX6968AUE+ is an 8-port, 5.5V constant current LED driver in 16 pin TSSOP package. This serial interfaced LED driver provides eight open-drain, constant current sinking LED driver outputs rated at 5.5V. The MAX6968 supply and the LEDs’ supply or supplies may power up in any order. The MAX6968 uses the industry standard shift register plus latch type serial interface. The driver accepts data shifted into an 8bit shift register using data input DIN and clock input CLK. Input data appears at output DOUT eight clock cycles later to allow cascading of multiple MAX6968 devices. The latch enable input (LE) loads 8bit of shift register data into an 8bit output latch to set which LEDs are on and which are off. The output enable input (active-low) OE gates all eight outputs on/off and is fast enough to be used as a PWM input for LED intensity control. It is used in variable message signs, marquee displays, point of order signs, traffic signs, architectural lighting and gaming applications.

• Operating supply voltage range from 3V to 5.5V
• Operating temperature range from -40°C to 125°C
• Up to 55mA continuous current per output
• 3% current matching between outputs
• Output current programmed by single resistor
• 6% current matching between ICs
• Supply current of 10mA (all logic inputs at V+ or GND, DOUT unloaded)
• 25MB industry standard 4-wire serial interface at 5V

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