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需求:合适的电源芯片

Other Parts Discussed in Thread: BQ24160, BQ24052, BQ24161, UCC28610, TPS63020, TPS61093, TPS63030, TPS62240

我的系统是单节锂电池供电的,需要usb或AC适配器充电。电池供电给一个GSM模块(4V左右,发送瞬间电流2A),其他电源需要5V/100mA,3.3V/100mA,可选5V或3.3V200mA 。产品需要低功耗设计,使用430主控。我找不到合适的电源芯片。GSM现在处理是电池直连,感觉不是很好的方式。请专家指点