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UC3707: Supply current Vin=5V

Part Number: UC3707
Other Parts Discussed in Thread: UCC27531,


I want to know the VIN current value at VIN=5V.

The data sheet has a description of typ12mA under the condition of V = 40V.

What is the VIN current when VIN = 5V?

  • Hello,

    I did not find data for the operating current at 5V, this is a fairly old device. I wanted to ask what are your requirements for your application. There are a number of newer devices with lower operating currents and more detailed test data that may be better for your application.


  • Thank you for your quick reply.

    I want to easily amplify a CMOS level (VIH = 3.3V) signal to VOH = 40V with this IC to drive a piezo device. The frequency of the signal is 40KHz. I am thinking of using it with VIN = 5V, Vc = 40V. If you have the best device, please let us know.

  • Hello,

    For a driver output of 40V, this product family is the only one that supports up to 40V for low side drivers. If 32V is adequate there is another driver family, the UCC27531 which supports 32V recommended and 35V maximum. 

    For the UC3707 as I mention the data available does not show the VIN=5V current, but it will not be higher than the current listed for 40V. For your design I would assume a maximum of the 12-15mA for design purposes and at 5V the current will likely be less.