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TPS61169: absolute maximum rating question

Patrick Chen
Mastermind 8875 points

Part Number: TPS61169

Hello,

              Below red circle voltage maximum rating, could I know how much time could be accepted by 7V voltage?  What is max. LED current per channel of tps61169 ? Thank you. 

BR

Patrick

  • 0
    TI__Expert 3370 points

    Hi, typically user can operate part safely within  abx value. however, due to ripple, mismatch, the voltage output could exceed abx value during operation, that's why we have recommended voltage range to leave some margin. anyway, 7V should be good as long as it not go beyond it. in terms of the current, it's depends on the FET current limit (1.2A minmum) and LED itself. hope this can help..

  • 0 in reply to Sheng Jin
    Mastermind 8875 points

    Hello Sheng,

                The LED max. current is 400mA, right? Due to not see the specification. Thank you. 

  • 0 in reply to Patrick Chen
    TI__Expert 4550 points
    Hi Patrick,
    TPS61169 could reach output current 400mA, but that depends on input voltage, output voltage and inductor seleted. The main limitation will be peak current in MOSFET, we have a current limit for integral MOSFET, which is 1.2A for TPS61169. Please take a consider of this when designing.