A Frequency Control (FC) input pin is used to select either 25 kHz or 120 kHz charge-pump operation. This is used to optimize capacitor size and quiescent current. With 25 kHz selected, a 10 µF external capacitor is suitable, while with 120 kHz the capacitor may be reduced to 2.2 µF. The oscillator frequency on the ADM660ARZ-REEL can also be controlled with an external capacitor connected to the OSC input or by driving this input with an external clock. In applications where a higher supply voltage is desired it is possible to use the ADM660ARZ-REEL to double the input voltage. With input voltages from 2.5 V to 7 V, output voltages from 5 V to 14 V are achievable with up to 100 mA output current.
The ADM8660 features a low power shutdown (SD) pin instead of the external oscillator (OSC) pin. This can be used to disable the device and reduce the quiescent current to 300 nA.
Feature
- 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
