LM2673SX-ADJ/NOPB Part Information
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.
- 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
|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 Voltage Min||1.2V|
|Output Voltage Max||37V|
|Operating Temperature Max||125°C|
|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
Frequently Asked Questions
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The LM2673SX-ADJ/NOPB is listed under Electronic & Electrical Components > Semiconductors - ICs > Power Management.
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Is the LM2673SX-ADJ/NOPB RoHS compliant?
Yes. This part has been flagged as RoHS Compliant by Farnell.
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Authorised distributors including Newark Electronics, Texas Instruments and Distrelec have stock available or on a lead time for LM2673SX-ADJ/NOPB.
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