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