LM2671MX-ADJ/NOPB

Active

Texas Instruments

8V TO 40V, 500MA SIMPLE SWITCHER® BUCK CONVERTER WITH 5 EXTERNAL COMPONENTS

Find alt

Alpha

LM2671MX-ADJ/NOPB

Active

Texas Instruments

8V TO 40V, 500MA SIMPLE SWITCHER® BUCK CONVERTER WITH 5 EXTERNAL COMPONENTS

Find alt

Alpha

Description Specifications Series Pricing CAD Documents

Description

General part information

LM2671 Series

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.

Technical Specifications

Parameters and characteristics for this part

Specification	LM2671MX-ADJ/NOPB

Current - Output	500 mA
Frequency - Switching	260 kHz
Function	Step-Down
Mounting Type	Surface Mount
Number of Outputs	1
Operating Temperature (Max)	125 °C
Operating Temperature (Min)	-40 °C
Output Configuration	Positive
Output Type	Adjustable
Package Length	0.154 in
Package Name	8-SOIC
Package Width	3.9 mm
Synchronous Rectifier	No
Topology	Buck
Voltage - Input (Max)	40 V
Voltage - Input (Min)	6.5 V
Voltage - Output (Max)	37 V
Voltage - Output (Min/Fixed)	1.21 V

LM2671 Series

Part	Output Configuration	Number of Outputs	Current - Output	Voltage - Input (Max)	Synchronous Rectifier	Package Name	Voltage - Input (Min)	Function	Package Length	Package Width	Operating Temperature (Max)	Operating Temperature (Min)	Topology	Output Type	Voltage - Output (Min/Fixed)	Mounting Type	Frequency - Switching	Package / Case	Voltage - Output (Max)
Texas Instruments LM2671M-5.0/NOPB	Positive	1	500 mA	40 V	No	8-SOIC	6.5 V	Step-Down	0.154 in	3.9 mm	125 °C	-40 °C	Buck	Fixed	5 V	Surface Mount	260 kHz
Texas Instruments LM2671M-5.0	Positive	1	500 mA	40 V	No	8-SOIC	6.5 V	Step-Down	0.154 in	3.9 mm	125 °C	-40 °C	Buck	Fixed	5 V	Surface Mount	260 kHz
Texas Instruments LM2671M-3.3	Positive	1	500 mA	40 V	No	8-SOIC	6.5 V	Step-Down	0.154 in	3.9 mm	125 °C	-40 °C	Buck	Fixed	3.3 V	Surface Mount	260 kHz
Texas Instruments LM2671LD-ADJ/NOPB	Positive	1	500 mA	40 V	No	16-WSON	6.5 V	Step-Down	5 mm	5 mm	125 °C	-40 °C	Buck	Adjustable	1.21 V	Surface Mount	260 kHz	16-WFDFN Exposed Pad	37 V
Texas Instruments LM2671N-3.3	Positive	1	500 mA	40 V	No	8-DIP 8-PDIP	6.5 V	Step-Down	0.3 in	7.62 mm	125 °C	-40 °C	Buck	Fixed	3.3 V	Through Hole	260 kHz
Texas Instruments LM2671MX-3.3/NOPB	Positive	1	500 mA	40 V	No	8-SOIC	6.5 V	Step-Down	0.154 in	3.9 mm	125 °C	-40 °C	Buck	Fixed	3.3 V	Surface Mount	260 kHz
Texas Instruments LM2671N-ADJ/NOPB	Positive	1	500 mA	40 V	No	8-DIP 8-PDIP	6.5 V	Step-Down	0.3 in	7.62 mm	125 °C	-40 °C	Buck	Adjustable	1.21 V	Through Hole	260 kHz		37 V
Texas Instruments LM2671LD-5.0/NOPB	Positive	1	500 mA	40 V	No	16-WSON	6.5 V	Step-Down	5 mm	5 mm	125 °C	-40 °C	Buck	Fixed	5 V	Surface Mount	260 kHz	16-WFDFN Exposed Pad
Texas Instruments LM2671N-3.3	Positive	1	500 mA	40 V	No	8-DIP 8-PDIP	6.5 V	Step-Down	0.3 in	7.62 mm	125 °C	-40 °C	Buck	Fixed	3.3 V	Through Hole	260 kHz
Texas Instruments LM2671N-12	Positive	1	500 mA	40 V	No	8-DIP 8-PDIP	6.5 V	Step-Down	0.3 in	7.62 mm	125 °C	-40 °C	Buck	Fixed	12 V	Through Hole	260 kHz