| 摘要 |
A method and circuit for providing a regulated current to a load stabilized with respect to the load current, a load voltage, and a circuit temperature. The circuit includes a power pass device, a current sense device, a voltage sense amplifier, a reference device, a temperature sense device, and a current control device. In one embodiment, the current control device receives a first signal based on the sensed load current, a second signal based on the sensed load voltage, a third signal based on the circuit temperature, and a reference signal. A lesser of the second, third, and reference signals is selected and differentially combined with the first signal. A control signal is derived from the combination to control a regulation of the load current. In a further embodiment, an external signal may be provided to the current control device for stabilization with respect to an external parameter.
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