SI7661

The SI7661 is designed as one kind of monolithic charge pump voltage inverter that will convert a positive voltage in the range of +4.5 V to +20 V to the corresponding negative voltage of -4.5 to -20 V. This device provides performance far superior to previous implementations of charge pump voltage inverters by combining low quiescent current with high efficiency.

Features of the SI7661 are:(1)+4.5 V to +20 V supply to -4.5 V to -20 V output;(2)cascaded voltage multiplication;(3)99.7% typical open circuit conversion efficiency;(4)requires only 2 external capacitors;(5)pin compatible with the ICL7660. And this device can be used in wide range of applications such as (1)inexpensive negative supplies;(2)data acquisition systems;(3)up to -20 V for op amps, and other linear circuits;(4)supply splitter, Vout= Vs/2;(5)RS-232 power supplies.

The absolute maximum ratings of the SI7661 can be summarized as:(1)V+ to GND: -0.3 V or +22 V;(2)oscillator input to GND: -0.3 V, V++0.3 V;(3)lead temperature (soldering, 10 sec): +300 ;(4)storage temperature: -65 to +160 ;(5)operating temperature ranges commercial: 0 to +70 ;(6)power dissipation plastic DIP: 300 mW;(7)power dissipation SO: 500 mW. If you want to know more information about it, please download the datasheet in www.seekic.com or www.chinaicmart.com .