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TPS61042: LED backlight

PAN-M
Mastermind 8375 points
Part Number: TPS61042
Other Parts Discussed in Thread: TPS61169

Dear all.

Our customer is trying to drive LED by TPS61042 which they authorized parts.
Vin=3.3V, Vout=19.2V, Iout=60mA
Is TPS61042 usable with this specifications?
When this is impossible, what mA can TPS61042 drive to?

Best Regards,
PAN-M

  • 0
    TI__Mastermind 22745 points
    Hi Pan,
    Take a quick calculation I_Lmax=Vout*Iout/Vin/Efficiency*Ripple=19.2*0.06/3.3/0.85*1.3=0.54A, this is larger than the TPS61042 internal current limit(0.4A min). So I 'm afraid This device may can't support your application. But we have TPS61169/5 that can support this kind of specs. Thanks.
    Regards
    Sean