TC7660 Charge Pump DC-to-DC Voltage Converter IC (DIP-8)

The TC7660 is a versatile charge pump DC-to-DC voltage converter designed to generate negative supply voltages from a single positive source. By using a switched-capacitor charge pump architecture, it eliminates the need for bulky and expensive inductors, significantly reducing electromagnetic interference (EMI) and circuit size. The device is pin-compatible with industry-standard 7660 converters and features an on-board oscillator running at a nominal frequency of 10kHz. This IC is an ideal solution for creating dual-polarity power supplies from a single battery or USB source, making it essential for operational amplifier circuits, RS-232 communication interfaces, and data acquisition systems. Its robust design also allows for voltage doubling or cascading multiple units to achieve higher negative output levels.

Key Features:

Operates over a wide input voltage range from 1.5V to 10V.

Requires only two low-cost external capacitors for full operation, saving board space.

Features high-voltage conversion efficiency typically rated at 99.9 percent.

Low quiescent current draw of approximately 80 microamps minimizes idle power loss.

Includes improved electrostatic discharge (ESD) protection up to 3kV.