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TL494: TL494 constant current

J
Expert 1065 points
Part Number: TL494

Why the TL494 need the 0.7mA 
where the 0.7mA from 

  • 0
    TI__Guru 74115 points

    Hi,

    When you design external feedback circuit and when that circuit connect to FB (pin 3), the circuit is required to provide up to 0.7mA to this pin so this pin can work normally. So the 0.7mA is from your external circuit which you need to design to meet this requirement.