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LP3943 vs. TLC59116

Mike Ulrich
Expert 3110 points
Other Parts Discussed in Thread: TLC59116, LP3943, LP55231

Hi,

Can someone highlight the major differences between the LP3943 and the TLC59116? They seem like very similar devices to me.

Thank You

  • 0
    TI__Expert 3460 points
    Mike,

    Here are some quick differences I see going through the two datasheets. Hope this helps.

    LP3943:
    Max current of 25mA per channel
    Each LED uses a current setting resistor
    Max voltage on LED pins: 6V
    Programmable PWM by setting to one of two different options.

    TLC59116:
    Max current of 120mA per channel
    Option for individual current setting resistor OR single resistor for all channels.
    Current multiplier option
    Max voltage on LED pins: 17V
    Programmable PWM through individual PWM registers or a group PWM feature
    Blinking option for LEDs
    Error detection
  • 0 in reply to Harry Kennedy1
    Genius 5095 points
    Dear Harry,

    Could LP3943 support the breathing behavior?

    My customer need 15-ch LED driver that support breathing behavior.
    I think LP3943 can't support breathing behavior, so I promote TLC59116.
    Am I right?

    Thanks
  • 0 in reply to daniel
    TI__Intellectual 1985 points

    Hi Mike,

    Both devices do not have dedicated LED engine to support breathing behavior, however,  this behavior can be accomplished by keep sending i2c commands to the device adjust the brightness accordingly.

    You should also take a look at LP55231, it has 3 LED engines, once the pattern is loaded, the microcontroller only needs to send a command to start the pattern. The draw back is it only has 9 channels, they will need 2 LP55231.

    Regards

    H L