LM2662 Switching voltage stabilizer positive to conversion negative voltage

1.Overview
LC LM2662 positive conversion to negative voltage module carry a LM2662 high precision voltage conversion chip, it can conversion 1.5V-5.5V Positive voltage to corresponding the negative voltage.


2.The function and characteristics
● Effective input voltage of 1.5 V to 5.5 V
● Internal crystals of oscillation frequency is adjustable
● A typical output resistance 3.5 ohms


3. Introduced the hardware and instructions
● Size: 20*10mm
● The board function description:
V + : positive voltage input
GND: switching power supply
V - : negative voltage output

When the FC in short two solder joint can choose internal crystal frequency is 150 KHZ, disconnected internal crystals to 20 KHZ;

When the input voltage is less than 3.5 V LV place two bonding pad should be short, when the input voltage is greater than 3.5 V to be disconnected.