LM2670SD-ADJ/NOPB Part Information

Details for LM2670SD-ADJ/NOPB by Texas Instruments

Electronic & Electrical Components>Semiconductors - ICs>Power Management

Part Description

The LM2670 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 output version. The SIMPLE SWITCHER® concept provides for a complete design using a minimum number of external components. The switching clock frequency can be provided by an internal fixed frequency oscillator (260 kHz) or from an externally provided clock in the range of 280 kHz to 400 kHz which allows the use of physically smaller sized components. A family of standard inductors for use with the LM2670 are available from several manufacturers to greatly simplify the design process. The external sync clock provides direct and precise control of the output ripple frequency for consistent filtering or frequency spectrum positioning. The LM2670 series also has built-in thermal shutdown, current limiting and an ON/OFF control input that can power down the regulator to a low 50‑µA quiescent current standby condition. The output voltage is ensured to a ±2% tolerance.

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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
  • 50-u00b5A Standby Current When Switched OFF
  • Efficiency Up to 94%
  • External Sync Clock Capability (280 kHz to 400 kHz)
  • Simple and Easy to Design With (Using Off-the- Shelf External Components)
  • 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 VSON
No. of Pins 14Pins
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 1 - Unlimited
SVHC No SVHC (27-Jun-2018)
Accuracy % 2%
Adjustable Output Voltage Min 1.2V
Base Number 2670
Frequency 280kHz
Operating Temperature Min -40°C
Operating Temperature Range -40°C to +125°C
Operating Voltage Tolerance + 2%
Output Voltage 37V
Primary Input Voltage 40V
Supply Voltage Min 8V
Termination Type Surface Mount Device
Voltage Regulator Type Step Down (Buck)
RoHS Compliant

Alternative Part Descriptions

  • SIMPLE SWITCHER High Efficiency 3A Step-Down Voltage Regulator with Sync | Texas Instruments

Frequently Asked Questions

Where can I find additional details, specifications and documents for a LM2670SD-ADJ/NOPB?

Additional datasheets, footprints and schematics for LM2670SD-ADJ/NOPB are listed in our Part Details tab. You can also find the LM2670SD-ADJ/NOPB image and similar parts on this details page.

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What category does LM2670SD-ADJ/NOPB fall under?

The LM2670SD-ADJ/NOPB is listed under Electronic & Electrical Components > Semiconductors - ICs > Power Management.

Can I view similar or alternative parts?

You can view similar parts to LM2670SD-ADJ/NOPB when available in the Power Management range under the specifications section at the bottom of the details page.

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Is the LM2670SD-ADJ/NOPB RoHS compliant?

Yes. This part has been flagged as RoHS Compliant by Farnell.

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