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TLC5928: Can multiple TLC592x parts share current-setting resistor

Part Number: TLC5928

Suppose I have multiple TLC5928 that I want to each output 5 mA. The datasheet recommends a resistance of 10.6k from the IREF pin to GND. Can all the chips share the same connection to one resistor, or is a separate resistor per chip recommended?

Is there any variation among the TLC592x series to the above question?

  • Hi James,

    I am afraid that you cannot connect all IREF pin to one register. Since the output current was determined by current from IREF pin, the variation of VIREF would cause some leakage between ICs and the calculation would be complex.