TI LM2679SX-3.3

Step-DownБак8V40V5A

Overview

The LM2679SX-3.3 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 ON-resistance DMOS power switch. The series consists of fixed output voltages of 3.3 V, 5 V, and 12 V and an adjustable output version.

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. The LM2679SX-3.3 series also 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. The output voltage is specified to a ±2% tolerance. The clock frequency is controlled to within a ±11% tolerance.

Features

SIMPLE SWITCHER® Series
Tape & Reel (TR) Package
Positive Output Configuration
Buck Topology
Fixed Output Type
1 Number of Outputs
8V Voltage - Input (Min)
40V Voltage - Input (Max)
3.3V Voltage - Output (Min/Fixed)
5A Current - Output
260kHz Frequency - Switching
No Synchronous Rectifier
Surface Mount Mounting Type