LM3351 Datasheet (National Semiconductor) - Switched Capacitor Voltage Converter

LM3351, Switched Capacitor Voltage Converter

The LM3351 is a CMOS charge-pump voltage converter which efficiently provides a 3.3V to 5V step-up, or 5V to 3.3V step-down.

The LM3351 is pin for pin compatible with the LM3350 but consumes 66% less quiescent current.

The LM3351 uses four small, low cost capacitors to provide the voltage conversion

LM3351 Features

* n Conversion of 3.3V to 5V, or 5V to 3.3V n Small Mini SO-8 package n No inductor required Applications n n n n Any mixed 5V and 3.3V system Laptop computers and PDAs Handheld instrumentation PCMCIA cards Key Specifications n 200 kHz switch frequency allows use of very small, inexpensive capacitor