| 摘要 |
<p>A highly accurate current-limiting circuit prevents an output current (IOUT) flowing through an output line (LOUT) from exceeding a specified value (ILIM) of an input current (IIN) flowing through an input line (LIN). The circuit contains a first channel device (10) controlled by a first reference voltage (VREF1), a current source (12) that supplies a reference current (IREF), a second channel device (14) controlled by a second reference voltage (VREF2), a current bypass device (16), and a bypass control system (18). The current gain below the specified value of the input current is close to one. By suitably choosing certain of the circuit parameters, the circuit operates in a substantially temperature-independent manner.</p> |
