DESCRIPTION

The SP828/829 devices are CMOS Charge Pump Voltage Inverters that can be implemented in designs requiring a negative voltage from a +5V supply. The SP828/829 devices are ideal for both battery-powered and board level voltage conversion applications with a typical operating current of 50µA for the SP828 and 130µA for the SP829.

■ 99.9% Voltage Conversion Efficiency

■ +1.5V to +5.5V Input Voltage Range

■ +1.25 VIN Guaranteed Start-up

■ Inverts Input Supply Voltage

■ Low EMI Voltage Inverter

■ 50µA Quiescent Current for the SP828

■ 130µA Quiescent Current for the SP829

■ 25mA Output Current

■ Indefinite Output Short Circuit to GND

■ Low 20ΩOutput Resistance

■ 12kHz Operating Frequency for the SP828

■ 35kHz Operating Frequency for the SP829

■ Pin Compatible Enhancement to MAX 828/829, TC828/829

■ 5-pin SOT23 Package