LM2678 SIMPLE SWITCHER High Efficiency 5A Step-Down Voltage
Regulator
April 2005
LM2678
SIMPLE SWITCHER® High Efficiency 5A Step-Down
Voltage
Regulator
General Description
The LM2678 series of
regulators are monolithic integrated circuits which provide all of the active functions for a stepdown (buck) switching
regulator capable of driving up to 5A loads with excellent line and load regulation characteristics.
High efficiency (90%) is obtained through the use of a low
ON-resistance DMOS power switch.
The series consists of fixed output voltages of 3.
3V, 5V and 12V and an adjustable output version.
The SIMPLE SWITCHER concept provides for a complete design using a minimum number of exte...