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推荐几个pwm控制恒流源,电流可通过pwm调节

Other Parts Discussed in Thread: TPS54160

1A就够用,pwm控制,要dcdc那种效率高的,线性的不要,封装要好焊接测试的,QFN那种不太好焊接的不要。输入到十几v,输出3v就够,我给钛酸锂电池恒流充电用,因特殊原因不想用充电ic。先谢谢了!