Switched Capacitor Voltage Converter

The MAX828 and MAX829 are CMOS charge pump voltage inverters that are designed for operation over an input voltage range of 1.15 V to 5.5 V with an output current capability in excess of 50 mA. The operating current consumption is only 68 μA for the MAX828 and 118 μA for the MAX829. The devices contain an internal oscillator that operates at 12 kHz for the MAX828 and 35 kHz for the MAX829.

FEATUREs
• Pb−Free Packages are Available
• Operating Voltage Range of 1.15 V to 5.5 V
• Output Current Capability in Excess of 50 mA
• Low Current Consumption of 68 μA (MAX828) or 118 μA (MAX829)
• Operation at 12 kHz (MAX828) or 35 kHz (MAX829)
• Low Output Resistance of 26 Ω
• Space Saving Thin SOT−23−5 Package

Typical Applications
• LCD Panel Bias
• Cellular Telephones
• Pagers
• Personal Digital Assistants
• Electronic Games
• Digital Cameras
• Camcorders
• Hand−Held Instruments