MAX6969:16-Port, 5.5V Constant-Current LED Driver

The MAX6969 serial-interfaced LED driver provides 16 open-drain, constant-current-sinking LED driver outputs rated at 5.5V. The MAX6969 operates from a 3V to 5.5V supply. The MAX6969 supply and the LEDs' supply or supplies can power up in any order. The constant-current outputs are programmed together to up to 55mA using a single external resistor. The MAX6969 operates with a 25Mb, industry-standard, 4-wire serial interface. The MAX6969 uses the industry-standard, shift-register-plus-latch-type serial interface. The driver accepts data shifted into a 16-bit shift register using data input DIN and clock input CLK. Input data appears at the DOUT output 16 clock cycles later to allow cascading of multiple MAX6969s. The latch-enable input, LE, loads the 16 bits of shift register data into a 16-bit output latch to set which LEDs are on and which are off. The output-enable, active-low OE, gates all 16 outputs on and off, and is fast enough to be used as a PWM input for LED intensity control. For applications requiring LED fault detection, refer to the MAX6984*, which automatically detects open-circuit LEDs. For safety-related applications requiring a watchdog timer, refer to the MAX6979, which includes a fail-safe feature that blanks the display if the serial interface becomes inactive for more than 1s. The MAX6969 is one of a family of 12 shift-register-plus-latch-type LED drivers. The family includes 8-port and 16-port types, with 5.5V- or 36V-rated LED outputs, with and without open-circuit LED detection and watchdog. All versions operate from a 3V to 5.5V supply, and are specified over the -40°C to +125°C temperature range.

Key Features
  • 25Mb, Industry-Standard, 4-Wire Serial Interface at 5V
  • 3V to 5.5V Logic Supply
  • 16 Constant-Current LED Outputs Rated at 5.5V
  • Up to 55mA Continuous Current per Output
  • Output Current Programmed by Single Resistor
  • 3% Current Matching Between Outputs
  • 6% Current Matching Between ICs
  • High-Dissipation, 24-Pin Packages
  • -40°C to +125°C Temperature Range
MAX6969: Typical Operating Circuit
MAX6969: Typical Operating Circuit
  • Architectural Lighting
  • Gaming Features
  • Marquee Displays
  • Point-of-Order Signs
  • Traffic Signs
  • Variable Message Signs
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MAX6969 Data SheetMAX6969.pdf
Part NumberLCD or LEDDigits or Char.Output FormatDisplay TypeInterfaceSegment BlinkingVSUPPLY
minmaxSee Notes
MAX6969LED16-SegmentAny digit typeCommon AnodeSerial 4-Wire 25MbitNo35.5PDIP(N)/24
$2.27 @1k
Design kits & evaluation modules
Quality and Environmental Data
Related Products
  • MAX6969:16-Port, 5.5V Constant-Current LED Driver
  • MAX6968:8-Port, 5.5V Constant-Current LED Driver
  • MAX6978:8-Port, 5.5V Constant-Current LED Driver with LED Fault Detection and Watchdog
  • MAX6977:8-Port, 5.5V Constant-Current LED Driver with LED Fault Detection
Ordering Information
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX6969ANGNo Longer AvailableMAX6969ANG+PDIP(N),;24 pin;158.4 mm²-40°C to +125°CNo
MAX6969ANG+ActivePDIP(N),;24 pin;158.4 mm²-40°C to +125°CLead Free
MAX6969AUGNo Longer AvailableMAX6969AUG+TSSOP,;24 pin;52.4 mm²-40°C to +125°CNo
MAX6969AUG+ActiveTSSOP,;24 pin;52.4 mm²-40°C to +125°CLead Free
MAX6969AUG+TActiveTSSOP,;24 pin;52.4 mm²-40°C to +125°CLead Free
MAX6969AUG-TNo Longer AvailableMAX6969AUG+TTSSOP;24 pin-40°C to +125°CSee data sheet
MAX6969AWGNo Longer AvailableMAX6969AWG+SOIC(W),;24 pin;166.1 mm²-40°C to +125°CNo
MAX6969AWG+ActiveSOIC(W),;24 pin;166.1 mm²-40°C to +125°CLead Free
MAX6969AWG+TActiveSOIC(W),;24 pin;166.1 mm²-40°C to +125°CLead Free
MAX6969AWG-G05No Longer AvailableW.SO;-40°C to +125°CSee data sheet
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX6969AWG-TNo Longer AvailableMAX6969AWG+TSOIC(W),;24 pin;166.1 mm²-40°C to +125°CNo
MAX6969AWG-TG05No Longer AvailableSOIC(W),;24 pin;166.1 mm²-40°C to +125°CNo
MAX6969.pdf MAX6969
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MAX6969.pdf MAX6969
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