LM2673S-ADJ/NOPB Part Information
Details for LM2673S-ADJ/NOPB by Texas Instruments
Electronic & Electrical Components>Semiconductors - ICs>Power Management
Part Description
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 ONresistance 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.
Part Downloads
Download PCB Footprint from Ultra Librarian
Part Features
- 150-mu03a9 DMOS Output Switch
- 260-KHz Fixed Frequency Internal Oscillator
- 3.3-V, 5-V, 12-V Fixed Output and Adjustable (1.2 V to 37 V) Versions
- Efficiency Up to 94%
- Resistor Programmable Peak Current Limit Over a Range of 2 A to 5 A
- Simple and Easy to Design With (Using Off-The- Shelf External Components)
- Soft-Start Capability
- Wide Input Voltage Range: 8 V to 40 V
- u00b12% Maximum Output Tolerance Over Full Line and Load Conditions
- u201340 to 125u00b0C Operating Junction Temperature
Part Specifications
| Topology | Buck (Step Down) |
| Input Voltage Min | 8V |
| Input Voltage Max | 40V |
| No. of Outputs | 1Outputs |
| DC / DC Converter IC Case | TO-263 |
| No. of Pins | 7Pins |
| Output Current | 3A |
| Output Voltage Min | 1.2V |
| Output Voltage Max | 37V |
| Switching Frequency | 260kHz |
| Operating Temperature Max | 125°C |
| Product Range | - |
| Automotive Qualification Standard | - |
| RoHS Phthalates Compliant | Yes |
| MSL | MSL 3 - 168 hours |
| SVHC | No SVHC (27-Jun-2018) |
| Accuracy % | 2% |
| Adjustable Output Voltage Min | 1.2V |
| Frequency | 280kHz |
| Operating Temperature Min | -40°C |
| Operating Temperature Range | -40°C to +125°C |
| Output Voltage | 37V |
| Primary Input Voltage | 40V |
| Supply Voltage Min | 8V |
| Termination Type | Through Hole |
| Voltage Regulator Type | Step Down (Buck) |
Alternative Part Descriptions
- Stepdown switching regulator,LM2673S-ADJ | RS Components
- IC, DC/DC CONVERTER, 3A; Topology:Buck (Step Down); Input Voltage Min:8V; Input Voltage Max:40V; No. of Outputs:1Outputs; DC / DC Converter IC Case:TO-263; No. of Pins:7Pins; Output Current:3A; Output Voltage Min:1.2V; Output VoltageRoHS Compliant: Yes | Newark Electronics
- PMIC; DC/DC converter; Uin: 8÷40V; Uout: 1.2÷37V; TO263-7; buck | Transfer Multisort Elektronik
- Switch. Reg 3A 1,2-37V 45Vs D²Pak-7 | Schukat Electronic
- 8V to 40V, 3A SIMPLE SWITCHER® buck converter with adjustable current limit | Texas Instruments
- Switching Regulator [Texas Instruments] LM2673S-ADJ/NOPB Switching Regulator | Distrelec
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Frequently Asked Questions
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The LM2673S-ADJ/NOPB is listed under Electronic & Electrical Components > Semiconductors - ICs > Power Management.
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Is the LM2673S-ADJ/NOPB RoHS compliant?
Yes. This part has been flagged as RoHS Compliant by Farnell.
Which authorised distributors for LM2673S-ADJ/NOPB have stock available?
Authorised distributors including RS Components, Newark Electronics, Transfer Multisort Elektronik, Schukat Electronic and Texas Instruments have stock available or on a lead time for LM2673S-ADJ/NOPB.
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