Reduce Scrapping and Smelting, Promote Component Reuse > Complete Machines
> Pre 1900
> DuPage County
> New
> LM2678 simple switcher® 5A step-down voltage regulator
LM2678 simple switcher® 5A step-down voltage regulator
LM2678-5.0 SIMPLE SWITCHER High Efficiency 5A Step-Down Voltage Regulator
Switching DC DC Converter Input: 8 - 40v Output: 5V
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 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. This model has a fixed output voltage of 5V.
The SIMPLE SWITCHER concept provides for a complete design using a minimum number of external components. A high fixed frequency oscillator (260KHz) allows the use of physically smaller sized components. A family of standard inductors for use with the LM2678 are available from several manufacturers to greatly simplify the design process.
The LM2678 series also has built in thermal shutdown, current limiting and an ON/OFF control input that can power down the regulator to a low 50 A quiescent current standby condition. The output voltage is guaranteed to a 2% tolerance. The clock frequency is controlled to within a 11% tolerance.
Data sheet: http:// /ds/LM/LM2678.pdf
