LED Drivers/LCD Bias

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TLC5926
Related Posts

  • Forum Post: Re: TLC5916 dropout voltage?

    Dick Stacey
    We have a datasheet update in progress. The datasheet will inlcude a graph comparing IOUT to VOUT. I think this will answer your question. For example, For IOUT = 40mA, VOUT (at the TLC5916) must be a minimum voltage of about 0.6V. VOUT is based on VLED minus the forward voltage of the LED(s). Regards...
    on Feb 4, 2011

  • Forum Post: Re: TLC5925 control the Output-Current

    Dick Stacey
    The TLC5925 uses current mirror topology to set the current in the outputs. Whatever current is on the REXT is multiplied to set the IOUT. As such, you cannot tie multiple REXT pins to one point. Have you considered the TLC5926 or TLC5927? Both devices have "current gain" which is a global...
    on Feb 9, 2011

  • Forum Post: Re: TLC5926 PowerPAD Connection

    Dick Stacey
    Nicolas, The PowerPAD improves thermal performance. Without soldering the PowerPAD, you lose much of the improvement. But, if you are operating at lower currents (and lower VOUT) levels, you may be okay. The TI Analog eLAB web page has some information that may help you. You must be very careful to...
    on Mar 9, 2011

  • Forum Post: Re: Increase current capability for TLC59108

    Dick Stacey
    Pietro, Yes, multiple outputs can be combined to obtain higher current. This is a benefit of the constant current output. It is the same for all of the TLC59xxx constant current devices (TLC59116, TLC5916, TLC5917, TLC5925, TLC59025, TLC5926, TLC5927 to name a few). Care must always be taken to stay...
    on Apr 15, 2011

  • Forum Post: TLC5926 Daisy chain wiring

    bob sagat
    I wanted to confirm the correct sequence for chaining 4 TLC5926 drivers together. Is SDO of chip 1 into SDI of chip 2, etc with SDO of the last chip going back into microcontroller? Also, are CLK and LE connected in parallel to the same pin of the microcontroller with OE set to ground (for constant driving...
    on May 24, 2011

  • Forum Post: Re: TLC5926 Daisy chain wiring

    Brigitte
    Hello Bob, You are right with the connection you mention above. Connect the SDO of the 1st with the SDI of the 2nd, the SDO of the 2nd with the SDI of the 3rd, the SDO of the 3rd with the SDI of the 4th and the SDO of the 4th with an input of the microcontroller. Connect CLK and LE of all parts...
    on May 24, 2011

  • Forum Post: Re: TLC5926/TLC5927 pretection

    Brigitte
    Hello Knighty, The short to GND detection and open detection is using the same flag and the same detection method. The part detects an open or short to GND error, if the current through the transistor is below the threshold target, which is typically below 1/2 the set current. Short to VLED detection...
    on Jun 3, 2011

  • Forum Post: Re: MBI5028 analog

    Oleksiy Pazyuk
    Hello . Do you know if TLC59281 TLC59282 have temperature shutdown. I was not able to find this information in the datasheet? For TLC59025/TLC5926 / TLC5927 there is overtemperature shutdown at 175C Does it mean that for TLC59281/ TLC59282 there is no any temperature protection? best regards...
    on Oct 27, 2011

  • Forum Post: Re: TLC5926 Cascading

    Brigitte
    Hello Mohanan, TLC59xx parts are generally built to make sure that it is possible to cascade several parts. When having a look at TLC5926, the only problem that I see with cascading such a lot parts is the clock signal. When connection SDI of the first part to a uC and then SDO of the 1st to SDI...
    on Nov 10, 2011

  • Forum Post: tlc5926, currents less than 4mA

    emanuel stiebler
    Hi all, is it safe to operate the tlc5926, using lower currents, for example 4mA per LED? I have to make sure, the LEDs never get more than that. The data sheet mentioned few times a minimum of 5mA, but with adjustments of R-Ext, and Volatge-gain/Current-Gain, smaller currents are possible. Any...
    on Dec 8, 2011

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