General Description

The TC7660S device is a pin-compatible replacement for the industry standard 7660 charge pump voltage converter. It converts a +1.5V to +12V input to a corresponding -1.5V to -12V output using only two low-cost capacitors, eliminating inductors and their associated cost, size and electromagnetic interference (EMI). Added features include an extended supply range to 12V, and a frequency boost pin for higher operating frequency, allowing the use of smaller external capacitors.

Features

• Oscillator boost from 10 kHz to 45 kHz

• Converts +5V Logic Supply to ±5V System

• Wide Input Voltage Range: +1.5V to +12V

• Efficient Voltage Conversion (99.9, typical)

• Excellent Power Efficiency (98, typical)

• Low Power Consumption: 80 µA (typical) @ VIN= 5V

• Low Cost and Easy to Use

- Only Two External Capacitors Required

• Available in 8-Pin Small Outline (SOIC) and 8-Pin PDIP Packages

• Improved ESD Protection (10 kV HBM)

• No External Diode Required for High-Voltage Operation

Applications

• RS-232 Negative Power Supply

• Simple Conversion of +5V to ±5V Supplies

• Voltage Multiplication VOUT = ± n V+

• Negative Supplies for Data Acquisition Systems and Instrumentation