| 摘要 |
PURPOSE:To enable speedy recovery from a power save state to an operating state by connecting a buffer to the output of a reference voltage generating circuit, connecting one terminal of the switch to the output of the buffer and connecting the other terminal of the switch to a low-order voltage. CONSTITUTION:A buffer 2 is connected to the output of a reference voltage circuit 1, and a constant current circuit 6 is connected to the output of that buffer 2. Then, one terminal of a switch 3 is connected to the output of the buffer 2, and the other terminal of the switch 3 is connected to a low-order power source 4. That switch 3 is connected so as to control its opening/closing at a power save signal input terminal 5. Thus, the speedy recovery from the power save state to the operating state is enabled, and power consumption can be reduced. |
