GENERAL DESCRIPTION
●The ADM660/ADM8660 is a charge-pump voltage converter that can be used to either invert the input supply voltage giving VOUT = –VIN or double it (ADM660 only) giving VOUT = 2 X VIN.
●Input voltages ranging from +1.5 V to +7 V can be inverted into a negative –1.5 V to –7 V output supply. This inverting scheme is ideal for generating a negative rail in single power supply systems. Only two small external capacitors are needed for the charge pump. Output currents up to 50 mA with greater than 90% efficiency are achievable, while 100 mA achieves greater than 80% efficiency.
●FEATURES
● ADM660: Inverts or Doubles Input Supply Voltage
● ADM8660: Inverts Input Supply Voltage
● 100 mA Output Current
● Shutdown Function (ADM8660)
● 2.2 μF or 10 μF Capacitors
● 0.3 V Drop at 30 mA Load
● +1.5 V to +7 V Supply
● Low Power CMOS: 600 μA Quiescent Current
● Selectable Charge Pump Frequency (25 kHz/120 kHz)
● Pin Compatible Upgrade for MAX660, MAX665, ICL7660
● Available in 16-Lead TSSOP Package
●APPLICATIONS
● Handheld Instruments
● Portable Computers
● Remote Data Acquisition
● Op Amp Power Supplies
