The MC7660 is a pin-compatible replacement for the Industry standard ICL7660 charge pump voltage converter. It converts a +1.5 V to +10 V input to a corresponding -1.5 V to -10 V output using only two low-cost capacitors, eliminating inductors and their associated cost, size and EMI.

The on-board oscillator operates at a nominal frequency of 10 kHz. Operation below 10 kHz (for lower supply current applications) is possible by connecting an external capacitor from OSC to ground (with pin 1 open).

The MC7660 is available in an 8-pin SOIC package in extended temperature range.

Features

• Converts +5.0 V Supply to -5.0 V Supply

• Wide Input Voltage Range: 1.5 V to 10 V

• Efficient Voltage Conversion: 99.9

• Excellent Power Efficiency: 98

• Low Power Supply: 80 µA @ 5.0 VIN

• Low Cost and Easy to Use - Only Two External Capacitors Required

• Available in Small Outline (SO) Package

• ESD Protection: ≥ 2.5 kV

• No Dx Diode Required for High Voltage Operation

Typical Applications

• RS-232 Negative Bias

• Display Bias

• Data Acquisition Negative Supply Generation