The start-up circuit was design for the bandgap voltage reference circuit working normally.
另外设计了启动电路以确保基准电路能正常工作。
Low power, low voltage and high PSRR are the main challenges in designing bandgap reference for switching regulator.
微功耗、低工作电压、高电源抑制比是在电源芯片中的基准源设计过程中遇到的主要挑战。
The schematics includes four parts: bandgap reference voltage and reference current, 2.7V and 1.8V regulator, over-load protection , Low Battery Detection (LBD) .
其原理包括参考电压电流电路，2.7V及1.8V电压调整电路，过流保护电路以及低压检测电路四个部分。
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