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MAX828 - Switched-Capacitor Voltage Inverters

General Description

The ultra-small MAX828/MAX829 monolithic, CMOS charge-pump inverters accept input voltages ranging from +1.5V to +5.5V.

The MAX828 operates at 12kHz, and the MAX829 operates at 35kHz.

Key Features

  • o 5-Pin SOT23-5 Package o 95% Voltage Conversion Efficiency o Inverts Input Supply Voltage o 60µA Quiescent Current (MAX828) o +1.5V to +5.5V Input Voltage Range o Requires Only Two Capacitors o 25mA Output Current MAX828/MAX829 ______________Ordering Information PART MAX828C/D MAX828EUK MAX829C/D MAX829EUK TEMP. RANGE 0°C to +70°C -40°C to +85°C 0°C to +70°C -40°C to +85°C.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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19-0495; Rev 2; 4/97 Switched-Capacitor Voltage Inverters _______________General Description The ultra-small MAX828/MAX829 monolithic, CMOS charge-pump inverters accept input voltages ranging from +1.5V to +5.5V. The MAX828 operates at 12kHz, and the MAX829 operates at 35kHz. Their high efficiency (greater than 90% over most of the load-current range) and low operating current (60µA for the MAX828) make these devices ideal for both battery-powered and boardlevel voltage-conversion applications. The MAX828/MAX829 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.