This is a Chinese translation of the Maxim MAX6968 datasheet. The MAX6968 is an 8-output constant-current LED driver with rated 5.5V outputs, supplied from a 3V to 5.5V logic supply. All outputs are set by a single external resistor, with a maximum of 55mA per channel, and the device is controlled through an industry-standard 4-wire serial interface using a shift register plus latch.
The datasheet gives the part's applications, ordering information, absolute maximum ratings, electrical characteristics, 5V and 3.3V timing characteristics, typical operating curves and a pin description. Data is shifted into the 8-bit shift register on DIN and CLK, latched with LE, and all outputs are gated by the OE input, whose fast response suits PWM LED dimming. The document notes that Maxim is not responsible for differences introduced by the translation and points readers to the English original for confirmation. This manual is written in Chinese.
| Operating Supply Voltage | 3.0V to 5.5V |
|---|---|
| Output Voltage | 5.5V |
| Maximum Output Current per Channel | 55mA |
| Current Matching Between Outputs | 3% |
| Number of LED Outputs | 8 constant-current outputs rated 5.5V |
| Operating Temperature Range | -40°C to +125°C |
The device operates from a 3V to 5.5V logic supply.
It has eight constant-current LED driver outputs rated at 5.5V.
The maximum LED current is set by a resistor connected between SET and GND.
Serial data is shifted into the internal 8-bit shift register on DIN and CLK, then latched to the outputs with LE.