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LM2673 Datasheet PDF

Part Series:LM2673 Series
Description:3A Step-Down Voltage Regulator with Adjustable Current Limit
Document:LM2673SX-5.0/NOPB Datasheet PDF (38 Pages)

LM2673 Datasheet PDF

37 Pages
TI
Conv DC-DC 8V to 40V Step Down Single-Out 3.3V 3A 8Pin(7+Tab) TO-263 T/R
37 Pages
TI
Conv DC-DC 8V to 40V Step Down Single-Out 5V 3A 7Pin(7+Tab) TO-220 Tube
37 Pages
TI
Conv DC-DC 8V to 40V Step Down Single-Out 12V 3A 8Pin(7+Tab) TO-263 Tube
37 Pages
TI
Conv DC-DC 8V to 40V Step Down Single-Out 12V 3A 8Pin(7+Tab) TO-263 T/R
37 Pages
TI
Conv DC-DC 8V to 40V Step Down Single-Out 12V 3A 14Pin VSON EP T/R
37 Pages
TI
Conv DC-DC 8V to 40V Step Down Single-Out 1.2V to 37V 3A 7Pin(7+Tab) TO-220 Tube
37 Pages
TI
Conv DC-DC 8V to 40V Step Down Single-Out 3.3V 3A 14Pin VSON EP T/R
37 Pages
TI
Conv DC-DC 8V to 40V Step Down Single-Out 12V 3A 7Pin(7+Tab) TO-220 Tube
37 Pages
TI
Conv DC-DC 8V to 40V Step Down Single-Out 1.2V to 37V 3A 8Pin(7+Tab) TO-263 Tube
37 Pages
TI
Conv DC-DC 8V to 40V Step Down Single-Out 5V 3A 8Pin(7+Tab) TO-263 Tube
37 Pages
TI
Conv DC-DC 8V to 40V Step Down Single-Out 1.2V to 37V 3A 14Pin VSON EP T/R
37 Pages
TI
Conv DC-DC 8V to 40V Step Down Single-Out 1.2V to 37V 3A 8Pin(7+Tab) TO-263 Tube
37 Pages
TI
Conv DC-DC 8V to 40V Step Down Single-Out 12V 3A 8Pin(7+Tab) TO-263 Tube
37 Pages
TI
Conv DC-DC 8V to 40V Step Down Single-Out 3.3V 3A 8Pin(7+Tab) TO-263 Tube
37 Pages
TI
Conv DC-DC 8V to 40V Step Down Single-Out 1.2V to 37V 3A 14Pin VSON EP T/R
37 Pages
TI
3A Step-Down Voltage Regulator with Adjustable Current Limit

LM2673 - TI Specifications

TYPE
DESCRIPTION
Case/Package
VSON-14
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LM2673 - TI Function Overview

The LM2673 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 3-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.
The SIMPLE SWITCHER® concept provides for a complete design using a minimum number of external components. A high fixed frequency oscillator (260 kHz) allows the use of physically smaller sized components. A family of standard inductors for use with the LM2673 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. The LM2673 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 ensured to a ±2% tolerance. The clock frequency is controlled to within a ±11% tolerance.
Efficiency Up to 94%
Simple and Easy to Design With (Using Off-The-
Shelf External Components)
Resistor Programmable Peak Current Limit Over a
Range of 2 A to 5 A
150-mΩ DMOS Output Switch
3.3-V, 5-V, 12-V Fixed Output and Adjustable
(1.2 V to 37 V) Versions
±2% Maximum Output Tolerance Over Full Line
and Load Conditions
Wide Input Voltage Range: 8 V to 40 V
260-KHz Fixed Frequency Internal Oscillator
Soft-Start Capability
–40 to 125°C Operating Junction Temperature
Range
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