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  • TI Thinks Resolved

TPS61253A: Minimum ON time

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Part Number: TPS61253A

Hi,

We got a question from the customer about TPS61253A.
Could you help us?

[Question]
They are considering using TPS61253A under the following condition.

 Vin=3.0V to 4.3V(1cell Li-ion) or 4.7V(ADP)
 Vout=5.0V
 Iout=30mA(typ),500mA(peak)
 L=1.0uH
 Mode=Forced PWM

- They need non pulse skip operation at this condition. How much is the minimum ON time of this device? They are thinking 4.7V input voltage is tough condition.

Best Regards,
tateo

  • for the TPS61253A, When Vin=4.7Vin, Vo=5V, the output ripple will be a little bit higher. Suggest you use TPS61170. Or you can use TPS61022 if the schdule is not a problem.

    Best Regards,
    Helen

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