LM2672 Series

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

Catalog

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

Part	Voltage - Output (Max)	Output Type	Voltage - Input (Min) [Min]	Frequency - Switching	Operating Temperature [Min]	Operating Temperature [Max]	Number of Outputs	Function	Package / Case	Package / Case	Package / Case	Voltage - Output (Min/Fixed)	Supplier Device Package	Current - Output	Topology	Mounting Type	Output Configuration	Output Type	Package / Case [y]	Package / Case [x]
Texas Instruments LM2672N-ADJ/NOPB	37 V	Adjustable	6.5 V	260 kHz	-40 °C	125 ¯C	1	Step-Down	0.3 in	8-DIP	7.62 mm	1.21 V	8-PDIP	1 A	Buck	Through Hole	Positive
Texas Instruments LM2672MX-12			6.5 V	260 kHz	-40 °C	125 ¯C	1	Step-Down		8-SOIC		12 V	8-SOIC	1 A	Buck	Surface Mount	Positive	1.81 mOhm	3.9 mm	0.154 in
Texas Instruments LM2672LD-ADJ	37 V	Adjustable	6.5 V	260 kHz	-40 °C	125 ¯C	1	Step-Down		16-WFDFN Exposed Pad		1.21 V	16-WSON (5x5)	1 A	Buck	Surface Mount	Positive
Texas Instruments LM2672N-12			6.5 V	260 kHz	-40 °C	125 ¯C	1	Step-Down	0.3 in	8-DIP	7.62 mm	12 V	8-PDIP	1 A	Buck	Through Hole	Positive	1.81 mOhm
Texas Instruments LM2672MX-ADJ	37 V	Adjustable	6.5 V	260 kHz	-40 °C	125 ¯C	1	Step-Down		8-SOIC		1.21 V	8-SOIC	1 A	Buck	Surface Mount	Positive		3.9 mm	0.154 in
Texas Instruments LM2672MX-ADJ/NOPB	37 V	Adjustable	6.5 V	260 kHz	-40 °C	125 ¯C	1	Step-Down		8-SOIC		1.21 V	8-SOIC	1 A	Buck	Surface Mount	Positive		3.9 mm	0.154 in
Texas Instruments LM2672MX-5.0			6.5 V	260 kHz	-40 °C	125 ¯C	1	Step-Down		8-SOIC		5 V	8-SOIC	1 A	Buck	Surface Mount	Positive	1.81 mOhm	3.9 mm	0.154 in
Texas Instruments LM2672M-5.0			6.5 V	260 kHz	-40 °C	125 ¯C	1	Step-Down		8-SOIC		5 V	8-SOIC	1 A	Buck	Surface Mount	Positive	1.81 mOhm	3.9 mm	0.154 in
Texas Instruments LM2672M-5.0/NOPB			6.5 V	260 kHz	-40 °C	125 ¯C	1	Step-Down		8-SOIC		5 V	8-SOIC	1 A	Buck	Surface Mount	Positive	1.81 mOhm	3.9 mm	0.154 in
Texas Instruments LM2672LD-3.3/NOPB			6.5 V	260 kHz	-40 °C	125 ¯C	1	Step-Down		16-WFDFN Exposed Pad		3.3 V	16-WSON (5x5)	1 A	Buck	Surface Mount	Positive	1.81 mOhm

Catalog

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

Key Features

• Efficiency up to 96%Available in 8-Pin SOIC and PDIP PackagesRequires only 5 External Components3.3-V, 5-V, 12-V, and Adjustable Output VersionsAdjustable Version Output Voltage Range: 1.21 Vto 37 V±1.5% Maximum Output Voltage Tolerance OverLine and Load ConditionsSpecified 1-A Output Load CurrentWide Input Voltage Range: 8 V to 40 V260-kHz Fixed Frequency Internal OscillatorTTL Shutdown Capability, Low Power StandbyModeSoft-Start and Frequency SynchronizationThermal Shutdown and Current Limit ProtectionEfficiency up to 96%Available in 8-Pin SOIC and PDIP PackagesRequires only 5 External Components3.3-V, 5-V, 12-V, and Adjustable Output VersionsAdjustable Version Output Voltage Range: 1.21 Vto 37 V±1.5% Maximum Output Voltage Tolerance OverLine and Load ConditionsSpecified 1-A Output Load CurrentWide Input Voltage Range: 8 V to 40 V260-kHz Fixed Frequency Internal OscillatorTTL Shutdown Capability, Low Power StandbyModeSoft-Start and Frequency SynchronizationThermal Shutdown and Current Limit Protection

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. 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.