供应CMOS电压转换器

'The Intersil IL7660CN are monolithic CMOS power supply circuits which offer unique performance advantages over previously available devices

The IL7660CN performs supply voltage conversions from positive to negative for an input range of +1.5V to +10.0V resulting in complementary output voltages of -1.5V to -10.0V

Only 2 noncritical external capacitors are needed for the charge pump and charge reservoir functions

The IL7660CN can also be connected to function as voltage doublers and will generate output voltages up to +18.6V with a +10V input

Contained on the chip are a series DC supply regulator, RC oscillator, voltage level translator, and four output power MOS switches

A unique logic element senses the most negative voltage in the device and ensures that the output N-Channel switch source-substrate junctions are not forward biased.

This assures latchup free operation

The oscillator, when unloaded, oscillates at a nominal frequency of 10kHz for an input supply voltage of 5.0V.

This frequency can be lowered by the addition of an external capacitor to the “OSC” terminal, or the oscillator may be overdriven by an external clock.

The “LV” terminal may be tied to GROUND to bypass the internal series regulator and improve low voltage (LV) operation. At medium to high voltages (+3.5V to +10.0V), the LV pin is left floating to prevent device latchup

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