Datasheets
LM2673SX-ADJ by:
Texas Instruments
National Semiconductor Corporation
Texas Instruments
Not Found

8V to 40V, 3A SIMPLE SWITCHER® buck converter with adjustable current limit 7-DDPAK/TO-263 -40 to 125

Part Details for LM2673SX-ADJ by Texas Instruments

Results Overview of LM2673SX-ADJ by Texas Instruments

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LM2673SX-ADJ Information

LM2673SX-ADJ by Texas Instruments is a Switching Regulator or Controller.
Switching Regulator or Controllers are under the broader part category of Power Circuits.

A power circuit delivers electricity in order to operate a load for an electronic device. Power circuits include transformers, generators and switches. Read more about Power Circuits on our Power Circuits part category page.

Available Datasheets

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TCKE712BNL Toshiba Electronic Devices & Storage Corporation eFuse IC (electronic Fuse), 4.4 to 13.2 V, 3.65 A, Latch, Adjustable Over Voltage Protection, WSON10
CA3085B Rochester Electronics LLC CA3085 - Adjustable Positive Standard Regulator
CA3085AE Rochester Electronics LLC CA3085 - Adjustable Positive Standard Regulator, 1.6V Min, 37V Max, BIPolar, PDIP8

Price & Stock for LM2673SX-ADJ

Part # Distributor Description Stock Price Buy
Rochester Electronics LM2673 8V to 40V, 3A SIMPLE SWITCHER buck converter with adjustable current limit RoHS: Not Compliant Status: End of Life / Last Time Buy Min Qty: 1 11
  • 1 $3.9900
  • 25 $3.9100
  • 100 $3.7500
  • 500 $3.5900
  • 1,000 $3.3900
$3.3900 / $3.9900 Buy Now
Win Source Electronics LM2673 SIMPLE SWITCHER 3A Step-Down Voltage Regulator with Adjustable Current | IC REG BUCK ADJ 3A TO263-7 33000
  • 12 $4.5220
  • 27 $3.7110
  • 42 $3.5950
  • 58 $3.4790
  • 75 $3.3630
  • 100 $3.0150
$3.0150 / $4.5220 Buy Now

Part Details for LM2673SX-ADJ

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LM2673SX-ADJ Part Data Attributes

LM2673SX-ADJ Texas Instruments
Buy Now Datasheet
Compare Parts:
LM2673SX-ADJ Texas Instruments 8V to 40V, 3A SIMPLE SWITCHER® buck converter with adjustable current limit 7-DDPAK/TO-263 -40 to 125
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Pbfree Code Yes
Rohs Code No
Part Life Cycle Code Obsolete
Ihs Manufacturer TEXAS INSTRUMENTS INC
Part Package Code D2PAK
Package Description POWER, TO-263, SMT-7
Pin Count 4
Reach Compliance Code not_compliant
ECCN Code EAR99
HTS Code 8542.39.00.01
Date Of Intro 1998-05-01
Samacsys Manufacturer Texas Instruments
Analog IC - Other Type SWITCHING REGULATOR
Control Mode VOLTAGE-MODE
Control Technique PULSE WIDTH MODULATION
Input Voltage-Max 40 V
Input Voltage-Min 8 V
Input Voltage-Nom 12 V
JESD-30 Code R-PSSO-G7
JESD-609 Code e0
Length 10.16 mm
Moisture Sensitivity Level 3
Number of Functions 1
Number of Outputs 1
Number of Terminals 7
Operating Temperature-Max 125 °C
Operating Temperature-Min -40 °C
Output Current-Max 3 A
Output Voltage-Max 37 V
Output Voltage-Min 1.23 V
Package Body Material PLASTIC/EPOXY
Package Code TO-263
Package Equivalence Code SMSIP7H,.55,50TB
Package Shape RECTANGULAR
Package Style SMALL OUTLINE
Peak Reflow Temperature (Cel) 235
Qualification Status Not Qualified
Seated Height-Max 4.8 mm
Surface Mount YES
Switcher Configuration BUCK
Switching Frequency-Max 260 kHz
Temperature Grade AUTOMOTIVE
Terminal Finish TIN LEAD
Terminal Form GULL WING
Terminal Pitch 1.27 mm
Terminal Position SINGLE
Time@Peak Reflow Temperature-Max (s) 20
Width 8.635 mm

Alternate Parts for LM2673SX-ADJ

This table gives cross-reference parts and alternative options found for LM2673SX-ADJ. The Form Fit Function (FFF) tab will give you the options that are more likely to serve as direct pin-to-pin alternates or drop-in parts. The Functional Equivalents tab will give you options that are likely to match the same function of LM2673SX-ADJ, but it may not fit your design. Always verify details of parts you are evaluating, as these parts are offered as suggestions for what you are looking for and are not guaranteed.

Part Number Manufacturer Composite Price Description Compare
LM2673SX-ADJ/NOPB Texas Instruments $3.5498 8V to 40V, 3A SIMPLE SWITCHER® buck converter with adjustable current limit 7-DDPAK/TO-263 -40 to 125 LM2673SX-ADJ vs LM2673SX-ADJ/NOPB
LM2673SX-ADJ/NOPB National Semiconductor Corporation Check for Price IC 5.4 A SWITCHING REGULATOR, 280 kHz SWITCHING FREQ-MAX, PSSO7, POWER, TO-263, SMT-7, Switching Regulator or Controller LM2673SX-ADJ vs LM2673SX-ADJ/NOPB
LM2673SX-ADJ National Semiconductor Corporation Check for Price IC 5.4 A SWITCHING REGULATOR, 280 kHz SWITCHING FREQ-MAX, PSSO7, POWER, TO-263, SMT-7, Switching Regulator or Controller LM2673SX-ADJ vs LM2673SX-ADJ
Part Number Manufacturer Composite Price Description Compare
LM2673T-5.0/NOPB Texas Instruments $2.4114 8V to 40V, 3A SIMPLE SWITCHER® buck converter with adjustable current limit 7-TO-220 -40 to 125 LM2673SX-ADJ vs LM2673T-5.0/NOPB
LM2670S-5.0/NOPB National Semiconductor Corporation Check for Price IC 5.4 A SWITCHING REGULATOR, 280 kHz SWITCHING FREQ-MAX, PSSO7, TO-263, 7 PIN, Switching Regulator or Controller LM2673SX-ADJ vs LM2670S-5.0/NOPB
LM2670SX-ADJ/NOPB National Semiconductor Corporation Check for Price IC 5.4 A SWITCHING REGULATOR, 280 kHz SWITCHING FREQ-MAX, PSSO7, POWER, TO-263, 7 PIN, Switching Regulator or Controller LM2673SX-ADJ vs LM2670SX-ADJ/NOPB
LM2675N-3.3 Texas Instruments Check for Price 2.2A SWITCHING REGULATOR, 275kHz SWITCHING FREQ-MAX, PDIP8, 0.300 INCH, PLASTIC, DIP-8 LM2673SX-ADJ vs LM2675N-3.3
LM2676SX-3.3/NOPB National Semiconductor Corporation Check for Price IC 3 A SWITCHING REGULATOR, 280 kHz SWITCHING FREQ-MAX, PSSO7, ROHS COMPLIANT, TO-263, SMT-7, Switching Regulator or Controller LM2673SX-ADJ vs LM2676SX-3.3/NOPB
LM2670T-3.3EP Texas Instruments Check for Price 5.4A SWITCHING REGULATOR, 280kHz SWITCHING FREQ-MAX, PZFM7, PLASTIC, TO-220, 7 PIN LM2673SX-ADJ vs LM2670T-3.3EP
LM2670SX-3.3 Texas Instruments Check for Price 5.4A SWITCHING REGULATOR, 280kHz SWITCHING FREQ-MAX, PSSO7, TO-263, 7 PIN LM2673SX-ADJ vs LM2670SX-3.3
LM2676S-ADJ Texas Instruments Check for Price SIMPLE SWITCHER® 8V to 40V, 3A Low Component Count Step-Down Regulator 7-DDPAK/TO-263 -40 to 125 LM2673SX-ADJ vs LM2676S-ADJ
LM2676T-5.0/NOPB Texas Instruments $2.7371 SIMPLE SWITCHER® 8V to 40V, 3A Low Component Count Step-Down Regulator 7-TO-220 -40 to 125 LM2673SX-ADJ vs LM2676T-5.0/NOPB
LM2676T-3.3EP Texas Instruments Check for Price IC SWITCHING REGULATOR, Switching Regulator or Controller LM2673SX-ADJ vs LM2676T-3.3EP

LM2673SX-ADJ Related Parts

LM2673SX-ADJ Frequently Asked Questions (FAQ)

  • The minimum input voltage required for the LM2673SX-ADJ to operate is 7.5V, but it's recommended to use a minimum of 8V to ensure proper operation and to account for voltage drops in the input circuit.

  • The LM2673SX-ADJ is rated for operation up to 125°C, but it's recommended to derate the output current and voltage as the temperature increases to ensure reliable operation. Consult the datasheet for thermal derating curves.

  • The output voltage of the LM2673SX-ADJ can be adjusted by connecting a resistive divider network between the output pin and the adjust pin. The ratio of the resistors determines the output voltage, which can be calculated using the formula: Vout = 1.25V x (1 + R1/R2).

  • The maximum output current of the LM2673SX-ADJ is 3A, but it's recommended to limit the output current to 2.5A or less to ensure reliable operation and to prevent overheating.

  • Yes, the LM2673SX-ADJ is a switching regulator and can be used in a switching power supply design. However, it's recommended to follow proper design guidelines and to ensure that the input voltage, output voltage, and output current are within the recommended operating ranges.