Part Number: LM27762
Other Parts Discussed in Thread: OPA2735, , LM2776

你好,我想请教一下 使用LM27762芯片给OPA2735供电,整个原理图有不妥的地方嘛?另外使用LM27762 供电5V,正输出的电压为4.8V,负端输出只有-2v左右,而且供电1分钟不到芯片很烫,可以帮我看一下是哪里的问题嘛?
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数据手册8.2.2.5.2 Input Capacitor
In typical applications, a 4.7-µF low-ESR ceramic capacitor is recommended on the input. When operating near the maximum load of 250 mA, after taking into the DC bias derating, a minimum recommended input capacitance is 2 µF or larger. Different input capacitance values can be used to reduce ripple, shrink the solution size, and/or cut the cost of the solution.