Микросхема LM2679S-5.0/NOPB, Импульсный понижающий регулятор …

Характеристики

LM2679S-5.0/NOPB, Импульсный понижающий регулятор …The LM2679S-5.0 is a SIMPLE SWITCHER® Step-down Voltage Regulator with adjustable current limit. This regulator provides 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. The series consists of fixed output voltages of 5V version. A high fixed frequency oscillator allows the use of physically smaller sized components and a family of standard inductors for use with the LM2679 are available from several manufacturers to greatly simplify the design process. Other features include the ability to reduce the input surge current at power-ON by adding a soft-start timing capacitor to gradually turn on the regulator. This regulator has built in thermal shutdown and resistor programmable current limit of the power MOSFET switch to protect the device and load circuitry under fault conditions.

• 120mR DMOS output switch
• ±2% Maximum output tolerance over full line and load conditions
• Soft-start capability
• -40 to 125°C Operating temperature range