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  • RE: LM3409: output behavior driver

    Thanks! Thats my results: The sloping flank falls as desired. With shunt FET dimming the voltage is controlled negated by the PWM and the NMOS..

  • LM3409: With PFET of Qg greater than 30nC

    Part Number: LM3409 Hi team, My customer is designing PFET with 36nC and LM3409 and has some questions about them. 9.1.8 of the LM3409 datasheet states that if Qg is greater than 30nC and CF is between VIN and VCC, the current detection will be erroneous…
    • Answered

  • LM3409-Q1: Analog Dimming Profile test data

    Resolved
    Part Number: LM3409-Q1 Hi team, Could you help to provide the test data for the below curve, especially for non-linear part in the red circle? BRs, Haury
    • Resolved

  • LM3409-Q1: LM3409-Q1 Output current

    TI Thinks Resolved
    Part Number: LM3409-Q1 Hi Expert customer want to use LM3409-Q1 for 20A/5V output（12V input）. can we support it?
    • Answered

  • RE: LM3409: LED Driver with High current capacity (> 5A)

    Resolved
    hi Taito sorry, currently no plan for LM3409 reference design since this is not a new device.

  • LM3409-Q1: can LM3409-Q1 support 7A current

    TI Thinks Resolved
    Part Number: LM3409-Q1 Hi Expert, Our customer has a new request. They want to output 7A current. Is it possible for LM3409-Q1 drive external to achieve that? Do you have related reference design? Thanks. BR, Elec Cheng

  • LM3409-Q1: How to understand the Imaxh and I maxL

    TI Thinks Resolved
    Part Number: LM3409-Q1 Hi Expert because of comparator's input offset, Imax value have offset so customer have two question as below: 1. how to get I maxH and ImaxL value? 2. because this offset will influence output current accuracy so they need…

  • LM3409-Q1: High frequency band noise inquiry (EMC CE test with DLPC230)

    TI Thinks Resolved
    Part Number: LM3409-Q1 Hi Experts, My customer faced an EMC noise issue on LM3409-Q1. Could you please give me any advice? Issue.1 They are conducting an EMC test (CE) on the DMD headlamp, but the noise in the high frequency band (50MHz~100MHz) is out…
    • Answered

  • LM3409-Q1: LM3409 loop parameter question

    Resolved
    Part Number: LM3409-Q1 Hi Expert in the EVM: 1. my customer change the parameter is: Roff: 1K Coff: 470pf RSNS: 75mohm EN PWM: 140HZ PWM min pulse: 5uS min stable current: 385mA customer used internal PWM method, control EN pin. situation: When external…
    • Resolved

  • LM3409-Q1: LM3409-Q1 PGATE control Issue

    TI Thinks Resolved
    Part Number: LM3409-Q1 Hi Expert My customer need the test issue as below show: firstly this device used in DLP LED driver and customer schematic as below: in their test, they doesn't input PWM, just input 0.66V to IADJ when input voltage =12V everything…

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