According to your requirements, I recommend you to choose TI LM2596S-ADJ, LTC1799-3.3V or RT8288A-33SV these three DCDC power chips. They are all packaged in TO-252-5 and can meet your 24V input, 8V output and 0.75A maximum input current needs.
24V input, 8V output, maximum input current 0.75A, packaged as TO-252-5 DCDC power chip selection recommendation
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Origin blog.csdn.net/weixin_42596246/article/details/129504483
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