| 摘要 |
A load drive circuit is disclosed, comprising: a MOSFET 24 including a power supply terminal connected to a lamp load 1, and turned ON/OFF to supply a power supply voltage to the lamp load 1 according to a load driving control signal; a strobe circuit 22 turned ON/OFF according to a monitoring control signal of a timing for monitoring a state of a lamp switch 2; a pull-up resistor 25 connected to the strobe circuit 22; and a microcomputer 21 for driving the lamp load 1 by supplying the load driving control signal to the MOSFET 24 to control turning ON/OFF, and monitoring the state of the lamp switch 2 by supplying the monitoring control signal to the strobe circuit 22 to control turning ON/OFF, based on a voltage value by the pull-up resistor 25.
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