100mA Charge Pump Voltage Converter with Shutdown

The MC1121 is a charge pump converter with 100mA output current capability. It converts a 2.4V to 5.5V input to a corresponding negative output voltage. As with all charge pump converters, the MC1121 uses no inductors saving cost, size, and reducing EMI.

Features
• Converts a 2.4V to 5.5V Input Voltage to a Corresponding Negative Output Voltage (Inverter Mode)
• Uses Only 2 Capacitors; No Inductors Required!
• High Output Current: 100mA
• Selectable Oscillator Frequency: 10kHz to 200kHz
• Power–Saving Shutdown Input
• Optional High–Frequency Operation Allows Use of Small Capacitors
• Low Operating Current (FC = GND): 50µA
• Tested Operating Temperature Range: –40°C to +85°C

Typical Applications
• Laptop Computers
• Medical Instruments
• Disk Drives
• µP–Based Controllers
• Process Instrumentation