LM2678 Overview
The LM2678 series of regulators are monolithic integrated circuits which provide all of the active functions for a step-down (buck) switching regulator capable of driving up to 5-A loads with excellent line and load regulation characteristics. High efficiency (>90%) is obtained through the use of a low ONresistance DMOS power switch. The series consists of fixed output voltages of 3.3 V, 5 V, and 12 V and an...
LM2678 Key Features
- 1 Efficiency Up to 92%
- Simple and Easy to Design Using Off-the-Shelf
- 120-mΩ DMOS Output Switch
- 3.3-V, 5-V, and 12-V Fixed Output and Adjustable
- 50-μA Standby Current When Switched OFF
- ±2% Maximum Output Tolerance Over Full Line
- Wide Input Voltage Range: 8 V to 40 V
- 260-kHz Fixed Frequency Internal Oscillator
- 40 to 125°C Operating Junction Temperature
LM2678 Applications
- Simple-to-Design, High Efficiency (>90%) StepDown Switching Regulators
- Efficient System Preregulator for Linear Voltage Regulators
