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  • LM3550: solution for Photoflash charger, such as LT3468

    Resolved
    Part Number: LM3550 Other Parts Discussed in Thread: TPS65563A Tool/software: hi, would you like kindly help to recommend a solution to support Photoflash charger, just like LT3468?
    • Resolved

  • LM3550: Is LM3550 IC works without balance pin

    Part Number: LM3550 I have used the ELDC supercapacitor - KR-5R5H474-R, it does not have balance pin, Is this correct ? In my board, Vout is 0V, it is not charging the supercapacitor. is there any alternate for this attached the schematic below.

  • LM3550: Overhead voltage does not seem to change when changing settings in register 0xB0

    Part Number: LM3550 Good afternoon, I have the circuit shown in the picture and I am trying to use it in optimal mode. I operate using an external strobe signal and my settings are as follow: GENERAL PURPOSE REGISTER= 0x22 CURRENT REGISTER= 0xF8 OPTIONS= …
    • Answered

  • LM3550: disable automatic charge after flashing

    Resolved
    Part Number: LM3550 We are sampling a signal directly after the LED flash. The charging is introducing noise and voltage drops to the signal. Currently we see no possibility to manually control the charging. The LM3550 always starts charging when the …
    • Resolved
    • Answered

  • LM3550: Slow charge and weak drive

    Resolved
    Part Number: LM3550 Other Parts Discussed in Thread: CSD17310Q5A I have a circuit board with a LM3550 that has been validated and working good. Now I have another board that does not work so well but has the same circuit. I wonder if a wrong part has…
    • Resolved

  • LM3550: Not charging in fixed voltage mode.

    TI Thinks Resolved
    Part Number: LM3550 Hi, Currently I am using LM3550 for my strobe project. I am using the same schematic as given by TI as reference design. The problem I am facing is when I am placing the LM3500 in charge mode with the indication LED on, The indication…
    • Answered

  • LM3550: Time limit tollerance

    Resolved
    Part Number: LM3550 Hello, I am seeing a fairly large time limit tolerance and just checked the datasheet. the only detail I can see is for the switching frequency - approximately -12% / +15% Is there a defined tolerance on the on time limit clock?…
    • Resolved

  • LM3550: Overhead Charge Voltage

    TI Thinks Resolved
    Part Number: LM3550 Hi Team, For our application we will not be using the optimal charge mode- as set by the Capacitor Charge Level (Table 3). Does this mean that we will not need to worry about the overhead charge voltage? It looks like this value is…
    • Answered

  • LM3550: feedback is 80mV

    Resolved
    Part Number: LM3550 Hello, I have tested two of these ICs and so far both have had a feedback voltage of 80mV even though I have not changed the value of register bank A0, I also set this register bank to F8, but this made no difference. is there any…
    • Resolved

  • LM3550: Need suitable solution for IR LED 1.5A * 4

    TI Thinks Resolved
    Part Number: LM3550 Dear Sir, I am looking for a suitable solution for IR LED with the below applications. Please help, thank you. Application : 4pcs IR LED will be used, thus it's peak current is about 1.5A * 4 = 6A IR LED is target to be on 2ms on…

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