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ICL7660 - Switched-Capacitor Voltage Converters

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.

Features

  • Miniature μMAX Package.
  • 1.5V to 10.0V Operating Supply Voltage Range.
  • 98% Typical Power-Conversion Efficiency.
  • Invert, Double, Divide, or Multiply Input Voltages.
  • BOOST Pin Increases Switching Frequencies (MAX1044).
  • No-Load Supply Current: 200μA (max) at 5V.
  • No External Diode Required for Higher-Voltage Operation Ordering Information appears at end of data sheet. Pin Configurations TOP VIEW + (N. C. ) BOOST 1 CAP+ 2 GND 3 MA.

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Full PDF Text Transcription

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Click here for production status of specific part numbers. MAX1044/ICL7660 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.
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