LM2673SX-ADJ/NOPB Part Information
Details for LM2673SX-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) |
Alternative Part Descriptions
- DC/DC CONV, BUCK, 260KHZ, TO-263-7; 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; RoHS Compliant: Yes | Newark Electronics
- 8V to 40V, 3A SIMPLE SWITCHER® buck converter with adjustable current limit | Texas Instruments
- Switching Regulator IC [Texas Instruments] LM2673SX-ADJ/NOPB Switching Regulator IC | Distrelec