Part # MAX6970 datasheet

Part Manufacturer: Maxim

Maxim

Part Description: MAX6970 DS


Part Details:

19-3890; Rev 0; 10/05 EVALUATION KIT AVAILABLE 8-Port, 36V Constant-Current LED Driver MAX6970 General Description Features The MAX6970 serial-interfaced LED driver provides 25Mbps Industry-Standard 4-Wire Serial Interface eight open-drain, constant-current-sinking LED driver at 5V outputs rated at 36V. The device operates from a 3V to5.5V supply. The MAX6970 supply and the LEDs sup- 3V to 5.5V Logic Supply ply can power up in any order. The constant-current Eight Constant-Current LED Outputs Rated at 36V outputs are programmed together up to 55mA using asingle external resistor. The MAX6970 operates with a Up to 55mA Continuous Current per Output 25Mbps, industry-standard, 4-wire serial interface. Output Current Programmed by Single Resistor The MAX6970 uses the industry-standard shift-register- 3% Current Matching Between Outputs plus-latch-type serial interface. The driver accepts datashifted into an 8-bit shift register using data input DIN 6% Current Matching Between ICs and clock input CLK. Input data appears at output DOUT eight clock cycles later to allow cascading of -40°C to +125°C Temperature Range multiple MAX6970s. The latch-enable input, LE, loadsthe 8 bits of shift register data into an 8-bit output latchto set which LEDs are on and which are off. The output-enable input, OE, gates all eight outputs on and off,and is fast enough to be used as a PWM input for LED Ordering Information intensity control. For applications requiring LED fault detection, refer to PIN- PKG PART TEMP RANGE the MAX6981 data sheet that automatically detects PACKAGE CODE open-circuit LEDs. MAX6970AUE -40°C to +125°C 16 TSSOP-EP* U16E-3 For safety-related applications requiring a watchdog MAX6970AAE -40°C to +125°C 16 SSOP P16-1 timer, refer to the MAX6980 data sheet, which includes *EP = Exposed pad. a fail-safe feature that blanks the display if the serialinterface becomes inactive for more than 1s. The MAX6970 is one of a family of 10 shift-register-plus-latch-type LED drivers. The family includes 8-port and Typical Application Circuit and Selector Guide appear at 16-port types, with 5.5V- or 36V-rated LED outputs, with end of data sheet.


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MAX6970.pdf Datasheet