IC ICL7660 DIP-8 (Switched-Capacitor Voltage Converters)

General Description

The MAX1044 and ICL7660 are monolithic, CMOS switched-capacitor voltage converters that invert, double, divide, or multiply a positive input voltage.

They are pin compatible with the industry-standard ICL7660 and LTC1044.

Operation is guaranteed from 1.5V to 10V with no external diode over the full temperature range.

They deliver 10mA with a 0.5V output drop. The MAX1044 has a BOOST pin that raises the oscillator frequency above the audio band and reduces external capacitor size requirements.

The MAX1044/ICL7660 combine low quiescent current and high efficiency.

Oscillator control circuitry and four power MOSFET switches are included on-chip.

Applications include generating a -5V supply from a +5V logic supply to power analog circuitry. For applications requiring more power, the MAX660 delivers up to 100mA with a voltage drop of less than 0.65V.

Applications

● -5V Supply from +5V Logic Supply

● Personal Communications Equipment

● Portable Telephones

● Op-Amp Power Supplies

● EIA/TIA-232E and EIA/TIA-562 Power Supplies

● Data-Acquisition Systems

● Handheld Instruments

● Panel Meters