MAX1044/ICL7660 is a monolithic CMOS switched-capacitor voltage converter that inverts, doubles, divides, or multiplies a positive input voltage. It is 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. It delivers 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.
The MAX1044 and ICL7660 are monolithic CMOS switched‑capacitor voltage converters that can invert, double, divide, or multiply a positive input voltage. They are pin‑compatible with the industry‑standard ICL7660 and LTC1044 and operate from 1.5 V to 10 V without an external diode.
The document provides detailed electrical characteristics, absolute maximum ratings, pin descriptions, and design guidelines for low‑voltage operation, oscillator frequency selection, and efficiency optimization. It also includes typical application circuits and ordering information.
| Operating Supply Voltage Range | 1.5 V to 10 V |
|---|---|
| Maximum Output Current | 10 mA |
| No‑Load Supply Current (5 V) | 200 µA max |
| Typical Power‑Conversion Efficiency | 98 % |
The MAX1044 operates from 1.5 V to 10 V.
Yes, the MAX1044 can operate without an external output diode over the full temperature and voltage ranges.
The device can deliver up to 10 mA of output current.