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ti公司有3.5V以下,稳定型好,精度高的芯片吗?

Other Parts Discussed in Thread: TL431

我打算用3.7的锂电池用降压芯片得到一个稳定型好,精度高的电压, 来做就像这样的恒流源电路。因为我打算用3.7v的锂电池供电,所以要把4.096V的电压改小点,+12,的也要改小,-12打算接地。请大家帮助下,也提点建议,谢谢了。