LM2672 SIMPLE SWITCHER® 6.5V to 40V, 1A Low Component Count Step-Down Regulator | TI.com

LM2672 (ACTIVE)

SIMPLE SWITCHER® 6.5V to 40V, 1A Low Component Count Step-Down Regulator

 

Recommended alternative parts

  • LM43601  -  3.5 to 36V, 1A Synchronous Step-Down Voltage Regulator - Higher efficiency, Low Quiescent Current, Smaller Solution Size
  • LMR14006  -  4 to 40V, 600mA Step-Down Voltage Regulator - Low Quiescent Current, Smaller Solution Size
  • LM43600  -  3.5 to 36V, 500mA Synchronous Step-Down Voltage Regulator - Higher efficiency, Low Quiescent Current, Smaller Solution Size

Description

The LM2672 series of regulators are monolithic integrated DC-DC converter built with a LMDMOS process. These regulators provide all the active functions for a step-down (buck) switching regulator, capable of driving a 1-A 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 LM2672 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.

Features

  • Efficiency up to 96%
  • Available in 8-Pin SOIC and PDIP Packages
  • Requires only 5 External Components
  • 3.3-V, 5-V, 12-V, and Adjustable Output Versions
  • Adjustable Version Output Voltage Range: 1.21 V
    to 37 V
  • ±1.5% Maximum Output Voltage Tolerance Over
    Line and Load Conditions
  • Specified 1-A Output Load Current
  • Wide Input Voltage Range: 8 V to 40 V
  • 260-kHz Fixed Frequency Internal Oscillator
  • TTL Shutdown Capability, Low Power Standby
    Mode
  • Soft-Start and Frequency Synchronization
  • Thermal Shutdown and Current Limit Protection

View more

Parametrics Compare all products in Buck converters (integrated switch)

 
Vin (Min) (V)
Vin (Max) (V)
Vout (Min) (V)
Vout (Max) (V)
Iout (Max) (A)
Regulated Outputs (#)
Switching Frequency (Min) (kHz)
Switching Frequency (Max) (kHz)
Iq (Typ) (mA)
Features
Control Mode
Duty Cycle (Max) (%)
Operating Temperature Range (C)
Rating
Package Group
Type
LM2672
6.5    
40    
1.23    
37    
1    
1    
225    
400    
2.5    
Enable    
Voltage Mode    
95    
-40 to 125    
Catalog    
PDIP | 8
SOIC | 8
WSON | 16    
Converter    

Design tool

New!
WEBENCH® Power Designer is now even easier to use. Try it now.

WEBENCH® Designer LM2672

  Min   Max Range
Vin  V 6.5 to 40.0V
Vout  V 1.21 to 40V
Iout  A ≤ 1A
Ambient Temp  °C -40 to 125°C


Footprint BOM Cost Efficiency


Preview design