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LM2596: LM2596

user6533748
Intellectual 300 points
Part Number: LM2596

Dear

  It is expected to use lm2596 to design a 2-way usb 5V 1.5A output circuit. Please confirm whether the circuit is OK?

Can CIN use aluminum electrolytic capacitors larger than 100uF? For example, 220uF / 330uf / 390uf and so on.

Is there any requirement for the withstand voltage of CIN?

lm2596 circuit.pdf

  • 0
    TI__Mastermind 25590 points

    User,

    Yes this device can be used for a 5V, 2x1.5A output.

    Yes you can use more input capacitance than shown in the datasheet. Make sure the input capacitance has a voltage rating higher than the maximum voltage seen by the capacitor.

    Your schematic looks good.

    -Sam

  • 0 in reply to Samuel Jaffe
    Intellectual 300 points

    Dear

     I have a question about the application of lm2596

    We use lm2596 to design a base that can charge two mobile phones and other devices at the same time.

    With the current design, the output end uses two USB2.0 interfaces, can achieve each 1.5A to charge the back-end devices?

    Isn't the maximum output current of USB2.0 interface 500mA? If I use USB2.0 connector to supply mobile phones and other devices, is the maximum output

    current 500mA? Or I need to use USB3.0 connector to achieve output greater than 1A

    Or whether the USB2.0 connector or the USB3.0 connector is just a bridge, the actual output current is not limited by the connector?

    Looking forward to your reply！Thank you!

  • 0 in reply to user6533748
    TI__Mastermind 25590 points

    User,

    I am not an expert on USB specifications. I can answer questions about the LM2596 and other devices in my product line but I am not qualified to comment on USB current availability specifications. I can tell you theoretically but this question has more to do with the standards adopted by the market which requires a USB expert to answer. Sorry about that.

    -Sam