LM2686 Datasheet (National Semiconductor) - Regulated Switched Capacitor Voltage Converter

LM2686, Regulated Switched Capacitor Voltage Converter

The LM2686 CMOS charge-pump voltage converter operates as an input voltage doubler and a +5V regulator for an input voltage in the range of +2.85V to +6.5V.

Three low cost capacitors are used in this circuit to provide up to 50mA of output current at +5.0V ( ± 5%).

The LM2686 operates at a 130 kHz s

LM2686 Features

* n n n n n n +5V regulated output 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 Instrumentation 3.3V to 5V Voltage Conversion A