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低功耗 LDO查询

Other Parts Discussed in Thread: TLV1117, TPS561208, TPS62150A
供电是12V电池供电,输出电压6V,系统平时工作在休眠状态,工作电流只有几uA。唤醒后电流在600mA左右。请大家推荐稳压芯片,主要是静态电流要低
  • 你好,TLV1117,静态电流1.7mA。但是,在LDO正常工作时会有3.6W的功率损耗,效率只有50%,所以不推荐LDO

    推荐使用BUCK电路,TPS561208 效率可以达到96%,外围器件也比较少,只要7个元件

  • Hi

       有3.6W的功耗,如果用LDO可以煮开水了。(散热设计比较麻烦,不被推荐)

       DC/DC, 见下面list:http://www.ti.com.cn/lsds/ti_zh/power-management/buck-converter-integrated-switch-products.page#p238max=12;25&p451max=0.55;1

     (输入电压大于12V, 电流大于0.5A, 带Powersaving功能,静态电流小于20uA)

       可选择TPS62150A之类.