发明授权
US07728529B2 LED driver using a depletion mode transistor to serve as a current source 失效
LED驱动器使用耗尽型晶体管作为电流源

LED driver using a depletion mode transistor to serve as a current source
摘要:
In a LED driver using a depletion mode transistor to serve as a current source, the depletion mode transistor is self-biased for providing a driving current to drive at least one LED, thereby requesting no additional control circuit to control the depletion mode transistor. The driving current is independent on the supply voltage coupled to the at least one LED, thereby requesting no additional voltage regulator, reducing the circuit size, and lowering the cost.
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