Abstract: An over-current protection circuit for composite transistor devices is provided, connected between an input terminal and a load, and including: a control-terminal voltage-generation module whose output voltage varies with its input voltage when driven by a first voltage, wherein the output voltage of the control-terminal voltage-generation module serves as a control-terminal voltage; a composite transistor device, connected between the control-terminal voltage-generation module and the load, configured to conduct in response to the control-terminal voltage and a second voltage to generate an output current flowing through the load; and an over-current protection module, connected between the composite transistor device and the load, wherein when the output current of the composite transistor device exceeds a preset limit, a clamping voltage is applied to the composite transistor device by the over-current protection module to limit a current flowing through the composite transistor device, thereby limiting th

Abstract: An over-current protection circuit for composite transistor devices is provided, connected between an input terminal and a load, and including: a control-terminal voltage-generation module whose output voltage varies with its input voltage when driven by a first voltage, wherein the output voltage of the control-terminal voltage-generation module serves as a control-terminal voltage; a composite transistor device, connected between the control-terminal voltage-generation module and the load, configured to conduct in response to the control-terminal voltage and a second voltage to generate an output current flowing through the load; and an over-current protection module, connected between the composite transistor device and the load, wherein when the output current of the composite transistor device exceeds a preset limit, a clamping voltage is applied to the composite transistor device by the over-current protection module to limit a current flowing through the composite transistor device, thereby limiting th

Abstract: The present disclosure provides a binary weighted current source and a digital-to-analog converter, which include: a driving voltage generating circuit, generating a driving voltage based on a preset current; a current dividing circuit, connected to an output terminal of the driving voltage generating circuit; a current steering circuit, connected to the current dividing circuit. The current dividing circuit divides the driving voltage through resistors in series, and drives each of a plurality of current output transistors to output a current in response to a voltage across the current output transistor. Currents output by the plurality of current output transistor are binary weighted currents, each two of the binary weighted currents have a binary relationship, and the binary weighted currents are produced by successive binary divisions of the preset current.

Abstract: The present disclosure provides a binary weighted current source and a digital-to-analog converter, which include: a driving voltage generating circuit, generating a driving voltage based on a preset current; a current dividing circuit, connected to an output terminal of the driving voltage generating circuit; a current steering circuit, connected to the current dividing circuit. The current dividing circuit divides the driving voltage through resistors in series, and drives each of a plurality of current output transistors to output a current in response to a voltage across the current output transistor. Currents output by the plurality of current output transistor are binary weighted currents, each two of the binary weighted currents have a binary relationship, and the binary weighted currents are produced by successive binary divisions of the preset current.