最近几年来,电子装置迅速向高精度、高稳定性、多用途等方向发展。从而要求其可靠性高、小型化和重量轻。因此也要求电源回路中的驱动部分要采用集成电路。以满足这一要求。 当然,作为直流稳压电源的输入电压变化率、负载变化率、温度系数必须小,漂移表减率必须大·尤其要有如下的良好的过渡响应特性: (1)对于输入电压变化引起的输出电压的过渡响应特性。 (2)对于负载变化的输出电压过渡响应; (3)输入开关“通—断”时的输出电压的过渡响应; In recent years, electronic devices have rapidly developed toward high precision, high stability and versatility. Thus requiring its reliability, miniaturization and light weight. Therefore, it is also required that the drive circuit in the power circuit be an integrated circuit. To meet this requirement. Of course, the rate of change of input voltage, the rate of change of load and temperature must be small as the input voltage change rate of the DC regulated power supply, and the reduction of the drift table must be large. In particular, the following good transient response characteristics are required: (1) Voltage transient response characteristics. (2) Transition response to output voltage transition of load; (3) Transition response of output voltage when input switch “on-off”;