LM2674MX-12/NOPB

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Texas Instruments

SIMPLE SWITCHER® 40V, 500MA LOW COMPONENT COUNT STEP-DOWN REGULATOR

LM2674MX-12/NOPB

Active

Texas Instruments

SIMPLE SWITCHER® 40V, 500MA LOW COMPONENT COUNT STEP-DOWN REGULATOR

Description Specifications Series Pricing CAD Documents

Description

General part information

LM2674 Series

The LM2674 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 and a fixed frequency oscillator.

The LM2674 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 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	LM2674MX-12/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	Fixed
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 (Min/Fixed)	12 V

LM2674 Series

SIMPLE SWITCHER® 40V, 500mA Low Component Count Step-Down Regulator

Part	Synchronous Rectifier	Package Length	Package Name	Package Width	Output Type	Topology	Voltage - Input (Min)	Operating Temperature (Max)	Operating Temperature (Min)	Frequency - Switching	Number of Outputs	Output Configuration	Current - Output	Function	Voltage - Input (Max)	Mounting Type	Voltage - Output (Min/Fixed)	Voltage - Output (Max)	Package / Case
Texas Instruments LM2674M-3.3	No	0.154 in	8-SOIC	3.9 mm	Fixed	Buck	6.5 V	125 °C	-40 °C	260 kHz	1	Positive	500 mA	Step-Down	40 V	Surface Mount	3.3 V
Texas Instruments LM2674MX-12/NOPB	No	0.154 in	8-SOIC	3.9 mm	Fixed	Buck	6.5 V	125 °C	-40 °C	260 kHz	1	Positive	500 mA	Step-Down	40 V	Surface Mount	12 V
Texas Instruments LM2674MX-3.3	No	0.154 in	8-SOIC	3.9 mm	Fixed	Buck	6.5 V	125 °C	-40 °C	260 kHz	1	Positive	500 mA	Step-Down	40 V	Surface Mount	3.3 V
Texas Instruments LM2674LD-ADJ	No	5 mm	16-WSON	5 mm	Adjustable	Buck	6.5 V	125 °C	-40 °C	260 kHz	1	Positive	500 mA	Step-Down	40 V	Surface Mount	1.2 V	37 V	16-WFDFN Exposed Pad
Texas Instruments LM2674LD-ADJ/NOPB	No	5 mm	16-WSON	5 mm	Adjustable	Buck	6.5 V	125 °C	-40 °C	260 kHz	1	Positive	500 mA	Step-Down	40 V	Surface Mount	1.2 V	37 V	16-WFDFN Exposed Pad
Texas Instruments LM2674N-3.3/NOPB	No	0.3 in	8-DIP 8-PDIP	7.62 mm	Fixed	Buck	6.5 V	125 °C	-40 °C	260 kHz	1	Positive	500 mA	Step-Down	40 V	Through Hole	3.3 V
Texas Instruments LM2674M-12	No	0.154 in	8-SOIC	3.9 mm	Fixed	Buck	6.5 V	125 °C	-40 °C	260 kHz	1	Positive	500 mA	Step-Down	40 V	Surface Mount	12 V
Texas Instruments LM2674M-ADJ/NOPB	No	0.154 in	8-SOIC	3.9 mm	Adjustable	Buck	6.5 V	125 °C	-40 °C	260 kHz	1	Positive	500 mA	Step-Down	40 V	Surface Mount	1.2 V	37 V
Texas Instruments LM2674N-12/NOPB	No	0.3 in	8-DIP 8-PDIP	7.62 mm	Fixed	Buck	6.5 V	125 °C	-40 °C	260 kHz	1	Positive	500 mA	Step-Down	40 V	Through Hole	12 V
Texas Instruments LM2674M-5.0	No	0.154 in	8-SOIC	3.9 mm	Fixed	Buck	6.5 V	125 °C	-40 °C	260 kHz	1	Positive	500 mA	Step-Down	40 V	Surface Mount	5 V