LED Drivers/LCD Bias

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LED Drivers/LCD Bias

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  • Forum Post: Gerber files for the LED ligting solutions

    Sham Sundar
    Dear Sir/Madam, Can you please provide me the Gerber files and BOM for the following design, 1.PMP3598 2.PMP3578 3.PMP3588 4. PMP3598 ( MPPT Charger ) Thanks in Advance. Regards, ShamSundar.E
    on Mar 23, 2011

  • Forum Post: TLC5947

    AMID ALE
    I have a question about TLC5947. try to understand how this device is connected in cascade mode to driving individual RGB LEDs but do not understand the information on the datasheet
    on May 26, 2011

  • Forum Post: Re: LED DRIVER FOR 1 CHANEL/LED

    Brigitte
    Hello Eli, Please review this application note: http://www.ti.com/litv/pdf/slva419a Best regards, Brigitte
    on Aug 17, 2011

  • Forum Post: LED Backlight Driver for LCD-TFT Display Panel

    Dinu Paulson
    Hi, I need support for a 5.7" LCD backlight.I need two requirements to satisfy.I have to use two Displays and they have different LED backlight config 1. One is with 3 strings each of 60mA/13.3V 2. The other one with single string 200mA/10V I need to operate two LCD's from one IC...
    on Sep 6, 2011

  • Forum Post: Re: Help: LED Driver for a Light Communication Channel

    Brigitte
    Hello Eric, Please checkout TLC5960. You need one external transistor per output, but the advantage is you can drive up to 8 LEDs/LED strings with one part, if it is ok that 2 LEDs are turning on at the same time, if not, you can drive 4 LEDs at a time and you just need PWM input signals for this...
    on Sep 21, 2011

  • Forum Post: TLC 5940: Why LED intensity decrease when generate BLANK signal every 4096 pulses?

    Pedro Ortiz
    Hi, we are using three TLC 5940 connected to one PIC18F4620 that generate the control signals. The problem appears when we activate the BLANK signal every 4096 pulses, the LED intensity result very poor. When we use BLANK signal every 256 pulses, the LED brightness increase well. However...
    on Sep 28, 2011

  • Forum Post: Variable Length Linear LED light

    Danielle Costantino85354
    Normal 0 false false false EN-US X-NONE X-NONE ...
    on Oct 1, 2011

  • Forum Post: Balanced line for TLC5970

    jiwoo bong
    Hi, It uses some balanaced line for long distance. But I have no idea which one would be the best suitable among rs422, rs485 and LVDS. Datasheet recommends -7 ~ 12v so it's rs485 spec. but it's not telling me specific method. I heard LVDS is faster than rs422,485 but...
    on Nov 3, 2011

  • Forum Post: TLC5940 Voltage Rail?

    Aaron Attar
    For my project: I am using many TLC5940 in series to control RGB LED's with the following specifications: - Seperate input wires for Red, Green and Blue allowing customization of colors - Driving voltage and current per channel: Red: 2.5V ~ 3.0V, 350mA Green: 3.2V ~ 3.8V...
    on Nov 9, 2011

  • Forum Post: LED driver for variable length automotive general purpose light

    Alex Walters
    Hi, I'm working on a project which requires a high brightness LED driver for a general purpose light which will go into trucks and vans. V IN range would be 8-32V DC, with 13.5 V being typical. It needs PWM dimming control. I would like to run the LEDs at 350mA. typical LED forward voltage would...
    on Dec 19, 2011

  • Forum Post: TPS61042 - Damaged - SW pin has low resistance

    Michael Day
    TPS61042 is damaged. Symptom is low resistance from SW to ground. I am driving 6 IR LEDs in series with 4 of these strings in parallel. That's 24 LEDs total. Vin=5V
    on Jan 6, 2012

  • Forum Post: Re: TPS61042 - Damaged - SW pin has low resistance

    Michael Day
    Although not shown in these posts, schematic was reviewed and looked good. I reviewed the layout and I think it is causing your problem. The trace between SW, through the diode, through the output capacitor, to ground MUST be as wide and short as possible. This is the critical routing loop for a boost...
    on Jan 6, 2012

  • Forum Post: Re: RGBA Definition

    Michael Day
    There may be some confusion between the RGBA color space and the practice of using amber or yellow LED in addition to the standard red, green, and blue one to generate a single pixel in an LED display. Regardless of the numbers of different LED colors used, an LED driver like the TLC5940 allows each...
    on Jan 9, 2012

  • Forum Post: Re: TLC5940 randomly dying

    Brigitte
    Hello Jonalt, This application is done by someone outside TI, therefore I do not know why the parts are dying randomly. Normally the parts are damaged if they are stressed beyond the absolute maximum ratings given in the datasheet. It could happen that the parts overheat and then immediately stop...
    on Jan 17, 2012

  • Forum Post: PWM of TLC5917 via OE?

    Lee Mulvogue
    I would like to use the OE pin of the TLC5917 for PWM control at about 160Hz, but am unsure of the implications/interactions with the Mode Switching method. It will also be connected up for SPI changing of "Normal Mode" settings, but these setting changes would only occur when the PWM system...
    on Feb 9, 2012

  • Forum Post: LM3405 intensity issue

    Aditya Ayachit
    Trying to use LM3405 for driving 1 Watt LED. Problem is as follows: The LED intensity is insufficient. The setup is as follows: 1. Circuit as per shown in the simplified block diagram. 2. EN/DIM pin is connected to the supply directly. 3. The power supply is a lithium ion battery (6000...
    on Mar 7, 2012

  • Forum Post: Re: High current synchronous LED driver

    Marc Davis-Marsh
    HI Rohan, Although the LM3150 can be made to work as a synchronous buck converter for driving LEDs. It will require some extra circuitry to add a DCR sense to the circuit that adds complexity. I ran a quick calculation on Webench, one of our online component selection and simulator tools...
    on Mar 9, 2012

  • Forum Post: [High Power LED] Highspeed Single Flash Application

    Enrico Merten
    Hello, I would like to create a single flash / light pulse with a high power LED (Cree XLamp XT-E series). The puls width should be from about 1 or 3 µs up to 10ms. The LED should be driven @ 3,5V-4V, 350mA-500mA (max. 1A). (I have not found any data on the capacitance of these diodes...
    on Apr 11, 2012

  • Forum Post: pmp4715-start moment

    lubo karamfilov
    Hi everybody, Can I do the start moment,can be faster?Now led strings,light on of the 4-5 seconds,but I want the light on 1-2 seconds from the plug in AC. thanks,best reagards
    on Apr 17, 2012

  • Forum Post: Re: TPS61043 driving 2 white LED. Efficiency vs Vin.

    Michael Day
    Although we did not expect customers to use the TPS61043 with only 2 LED (typical applications are 4 in series), the TPS61043 will work well with this application. You will be able to modify the existing TPS61042 EVM with your chosen capacitors and inductors and test its performance to ensure it meets...
    on Apr 18, 2012

  • Forum Post: Drive one LED with LM3409HV Evaluation board (LM3409HVEVAL)

    Mojtaba Shakeri
    I am considering buying "LM3409HV High Voltage LED Buck Controller Evaluation Board" because I need fast PWM dimming frequency around 100khz and also controllable current up to 1.2A. But I need this board to drive just one High Brightness LED with forward voltage 3.3. I was wondering if it...
    on Feb 1, 2012

  • Forum Post: RE: TPS63060 to drive LED

    Paul Breakfield
    Thanks Chris, I hadn't seen that article. Paul
    on Jul 31, 2012

  • Forum Post: RE: TPS63060 to drive LED

    Paul Breakfield
    Some thoughts about the PDF... It contains three circuits: "Circuit 1"- TPS630x0 and a shunt resistor (very poor efficiency and high thermal dissipation due to shunt's power loss); "Circuit 2"- improved version of "1" but the output current is not constant because...
    on Aug 4, 2012

  • Forum Post: TPS63060 to drive LED

    Paul Breakfield
    I am using the tps63060evm to try and evaluate the tps63060 in constant current mode. I would like for the voltage to adjust variably to what the led needs while supplying a constant current. I am initially wanting to test in boost mode with a 4.2v Li-ion battery, but I would also like to explore bucking...
    on Jul 30, 2012

  • Forum Post: Looking for LM3410 except higher output current

    Paul Breakfield
    I am looking for an LED driver that can operate in boost from one Li-ion (3.8v-4.2v) or buck from 8.4v. Either is fine. I am looking for constant current output which adjusts to the Vf of the diode. I have been using the LM3410 in boost with great success up to about 1.2A. After that, no matter how much...
    on Jul 30, 2012
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