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Single-supply transforming into positive and negative dual p

2015-03-17 23:44  
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Single-supply transforming into positive and negative dual power supply circuit
In the circuit, VD1 is used to compensate the UBE temperature characteristics of VT3. TPS60403 integrated chip can change the input voltage +1.4 ~ +5.5 V into a negative voltage. And output positive and negative voltageare established at the same time. The circuit is used for battery-powered electronic devices.