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TPS61032 Unregulated Auxiliary -5V Output performance

Other Parts Discussed in Thread: TPS61032

你好,

      两节干电池输入(1.8V~3.5V),  通过TPS61032升压到5V,  同时按照规格书Figure 21中的电路输出Unregulated Auxiliary -5V Output, 请教-5V输出的电压精确度和纹波水平如何?  可否经LDO后供小信号运放使用?   另,两节干电池输入(1.8V~3.5V),输出-5V,有哪些推荐方案, 感谢!