LM2671M-5.0/NOPB Part Information

Details for LM2671M-5.0/NOPB by Texas Instruments

Electronic & Electrical Components > Semiconductors - ICs > Power Management

Part Description

The LM2671 series of regulators are monolithic integrated circuits built with a LMDMOS process. These regulators provide all the active functions for a step-down (buck) switching regulator, capable of driving a 500-mA load current with excellent line and load regulation. These devices are available in fixed output voltages of 3.3 V, 5 V, 12 V, and an adjustable output version. Requiring a minimum number of external components, these regulators are simple to use and include patented internal frequency compensation, fixed frequency oscillator, external shutdown, soft start, and frequency synchronization. The LM2671 series operates at a switching frequency of 260 kHz, thus allowing smaller sized filter components than what is required with lower frequency switching regulators. Because of its very high efficiency (> 90%), the copper traces on the printed-circuit board are the only heat sinking required. A family of standard inductors for use with the LM2671 are available from several different manufacturers. This feature greatly simplifies the design of switch-mode power supplies using these advanced ICs. Also included in the data sheet are selector guides for diodes and capacitors designed to work in switch-mode power supplies.

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Part Features

  • 0.25-u2126 DMOS Output Switch
  • 260-kHz Fixed Frequency Internal Oscillator
  • 3.3-V, 5-V, 12-V, and Adjustable Output Versions
  • Adjustable Version Output Voltage Range: 1.21 V to 37 V
  • Available in 8-Pin SOIC, PDIP, and WSON Packages
  • Efficiency up to 96%
  • Ensured 500-mA Output Load Current
  • Requires Only 5 External Components
  • Simple and Easy to Design With
  • Soft-Start and Frequency Synchronization
  • TTL Shutdown Capability, Low Power Standby Mode
  • Thermal Shutdown and Current-Limit Protection
  • Uses Readily Available Standard Inductors
  • Wide Input Voltage Range: 8 V to 40 V
  • u00b11.5% Maximum Output Voltage Tolerance Over Line and Load Conditions

Part Specifications

Topology Buck (Step Down)
Input Voltage Min 6.5V
Input Voltage Max 40V
DC / DC Converter IC Case SOIC
No. of Pins 8Pins
Output Current 500mA
Output Voltage Nom. 5V
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 % 1.5%
Frequency 260kHz
No. of Outputs 1Outputs
Operating Temperature Min -40°C
Operating Temperature Range -40°C to +125°C
Output Current Max 0.5A
Output Voltage 5V
Primary Input Voltage 12V
Supply Voltage Max 40V
Supply Voltage Min 6.5V
Termination Type Surface Mount Device
Voltage Regulator Type Step Down (Buck)
RoHS Compliant

Alternative Part Descriptions

  • Stepdown switch regulator,LM2671M-5 0.8A | RS Components
  • IC, DC/DC CONVERTER, 0.5A, SMD; Topology:Buck (Step Down); Input Voltage Min:6.5V; Input Voltage Max:40V; DC / DC Converter IC Case:SOIC; No. of Pins:8Pins; Output Current:500mA; Output Voltage Nom.:5V; Switching Frequency:260kHz; RoHS Compliant: Yes | Newark Electronics
  • 8V to 40V, 500mA SIMPLE SWITCHER® buck converter with 5 external components | Texas Instruments
  • Switching controller IC [Texas Instruments] LM2671M-5.0/NOPB Switching controller IC | Distrelec

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