LM2685 Datasheet (National Semiconductor) - Dual Output Regulated Switched Capacitor Voltage Converter

LM2685, Dual Output Regulated Switched Capacitor Voltage Converter

The LM2685 CMOS charge-pump voltage converter operates as an input voltage doubler, +5V regulator and inverter for an input voltage in the range of +2.85V to +6.5V.

Five low cost capacitors are used in this circuit to provide up to 50mA of output current at +5V ( ± 5%), and 15mA at *5V.

The

LM2685 Features

* n n n n n n n +5V regulated output Inverts V05(+5V) to VNEG(

* 5V) Doubles input supply voltage TSSOP-14 package 80% typical conversion efficiency at 25mA Input voltage range of 2.85V to 6.5V Independent shutdown control pins Applications n n n n n Cellular phones Pagers PDAs Handheld instrum