资 源 简 介
The ADM660/ADM8660 is a charge-pump voltage converterthat can be used to either invert the input supply voltage givingVOUT = –VIN or double it (ADM660 only) giving VOUT = 2 VIN.Input voltages ranging from +1.5 V to +7 V can be inverted intoa negaTIve –1.5 V to –7 V output supply. This inverTIng schemeis ideal for generaTIng a negaTIve rail in single power supplysystems. Only two small external capacitors are needed for thecharge pump. Output currents up to 50 mA with greater than90% efficiency are achievable, while 100 mA achieves greaterthan 80% efficiency.
