| 摘要 |
Power management integrated circuit and related devices. A clock generator generates a periodic signal. Based on the periodic signal and a feedback signal, a pulse width modulator generates a control signal, based on which a driver drives a power switch. A power terminal is connected to an external capacitor. A linear regulator connected to the power terminal generates and supplies an internal power source. Powered by the internal power source, a bandgap generator provides a bandgap reference voltage. A standby control terminal receives a standby signal. When the standby signal is asserted, the clock generator, the pulse with modulator and the driver are at a disabled state, and the linear regulator and the bandgap generator at an enabled state.
|
