MAX6968AUE+ by Analog Devices

8-Port, 5.5V Constant-Current LED Driver


The MAX6968 serial-interfaced LED driver provides eight open-drain, constant-current sinking LED driver outputs rated at 5.5V. The MAX6968 operates from a 3V to 5.5V supply. The MAX6968 supply and the LEDs' supply or supplies may power up in any order. The constant-current outputs are programmed together to up to 55mA using a single external resistor. The MAX6968 operates with a 25Mb, industry-standard, 4-wire serial interface. The MAX6968 uses the industry-standard shift-register-plus-latch-type serial interface. The driver accepts data shifted into an 8-bit shift register using data input DIN and clock input CLK. Input data appears at the output DOUT eight clock cycles later to allow cascading of multiple MAX6968s. The latch-enable input LE loads the 8 bits of shift register data into an 8-bit output latch to set which LEDs are on and which are off. The output-enable input active-low OE gates all eight 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 MAX6977 data sheet that automatically detects open-circuit LEDs. For safety-related applications requiring a watchdog timer, refer to the MAX6978 data sheet that includes a fail-safe feature that blanks the display if the serial interface becomes inactive for more than 1s. The MAX6968 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.

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Features

25Mb Industry-Standard 4-Wire Serial Interface at 5V
3V to 5.5V Logic Supply
8 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
-40°C to +125°C Temperature Range

Specifications

LCD or LED LED
Display Type Common Anode
Interface Serial 4-Wire 25Mbit
Digits or Char. 8-Segment
Output Format Any digit type
Segment Blinking No
VSUPPLY (V) (min) 3
VSUPPLY (V) (max) 5.5
Package/Pins PDIP/16SSOP/16TSSOP/16
BudgetaryPrice (See Notes) 1.59


MAX6968AUE+ Semiconductors - ICs by Analog Devices

LED DRIVER CONSTANT CURRENT TSSOP-16

Status: Unknown
Series: -
RoHS: Unknown
Download Datasheet Visit Manufacturer Site View Pricing & Stock

Specifications

Device Topology -
No. of Outputs 8Outputs
Output Current 55mA
Output Voltage 5.5V
Driver Case Style TSSOP
No. of Pins 16Pins
Input Voltage Min 3V
Input Voltage Max 5.5V
Switching Frequency -
Operating Temperature Min -40°C
Operating Temperature Max 125°C
Product Range -
Automotive Qualification Standard -
RoHS Phthalates Compliant To Be Advised
MSL MSL 1 - Unlimited
SVHC No SVHC (15-Jan-2018)

Alternative Descriptions

8-Port, 5.5V Constant-Current | Analog Devices
LED DRIVER, CONSTANT CURRENT, TSSOP-16 | element14
MAX6968AUE+,LED Display Drivers | RS
Led Driver, Constant Current, Tssop-16 | Newark Electronics

Frequently Asked Questions

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Is the MAX6968AUE+ RoHS compliant?

This part has not been flagged as RoHS Compliant.

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