LM7660 Switching Voltage Regulator Positive Voltage to Negative Voltage Conversion

Characteristics:
-Effective range of input voltage: 1.5 V to 10 V
-Low working current
-With high voltage and power conversion efficiency

Hardware:

The board function description:
-V :positive voltage input;
-GND :switching power supply;
-V – :negative voltage output
-FC in 2 solder pads should always keep a disconnect, when the input voltage is less than 3.5V LV place, the two bonding pad should be short, when the input voltage is greater than 3.5V to be disconnected.