LM3674MFX-1.875/NOPB

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Texas Instruments

CONV DC-DC 2.7V TO 5.5V SYNCHRONOUS STEP DOWN SINGLE-OUT 1.875V 0.6A 5-PIN SOT-23 T/R

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LM3674MFX-1.875/NOPB

Active

Texas Instruments

CONV DC-DC 2.7V TO 5.5V SYNCHRONOUS STEP DOWN SINGLE-OUT 1.875V 0.6A 5-PIN SOT-23 T/R

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Description Specifications Series Pricing CAD Documents

Description

General part information

LM3674 Series

The LM3674 step-down DC-DC converter is optimized for powering low-voltage circuits from a single Li-Ion cell battery and input voltage rails from 2.7 V to 5.5 V. It provides up to 600-mA load current over the entire input voltage range. There are several fixed output voltages and adjustable output voltage versions.

The device offers superior features and performance for mobile phones and similar portable systems. During the Pulse Width Modulation (PWM) mode, the device operates at a fixed-frequency of 2 MHz (typical). Internal synchronous rectification provides high efficiency during the PWM mode operation. In shutdown mode, the device turns off and reduces battery consumption to 0.01 µA (typical).

The LM3674 is available in a 5-pin SOT-23 package. A high switching frequency of 2 MHz (typical) allows use of only three tiny external surface-mount components, an inductor and two ceramic capacitors.

Technical Specifications

Parameters and characteristics for this part

Specification	LM3674MFX-1.875/NOPB

Current - Output	600 mA
Frequency - Switching	2 MHz
Function	Step-Down
Mounting Type	Surface Mount
Number of Outputs	1
Operating Temperature (Max)	85 °C
Operating Temperature (Min)	-30 °C
Output Configuration	Positive
Output Type	Fixed
Package Name	SOT-23-5
Synchronous Rectifier	Yes
Topology	Buck
Voltage - Input (Max)	5.5 V
Voltage - Input (Min)	2.7 V
Voltage - Output (Min/Fixed)	1.875 V

LM3674 Series

Part	Supplied Contents	Total Output Count	Output Type	Non-Isolated Output Count	Board Type	Regulator Topology	Contents	Main Purpose	Frequency - Switching	Voltage - Output	Utilized IC / Part	Current - Output	Voltage - Input (Minimum)	Voltage - Input (Maximum)	Voltage - Input (Max)	Number of Outputs	Voltage - Output (Min/Fixed)	Package Name	Voltage - Output (Max)	Mounting Type	Output Configuration	Voltage - Input (Min)	Function	Topology	Synchronous Rectifier	Operating Temperature (Max)	Operating Temperature (Min)	Voltage - Output (Min)
Texas Instruments LM3674MF-1.5EV	Board(s)	1	Non-Isolated	1 count	Fully Populated	Buck	Board	DC/DC Step Down	2 MHz	1.5 V	LM3674	600 mA	2.7 V	5.5 V
Texas Instruments LM3674MFX-ADJ			Adjustable						2 MHz			600 mA			5.5 V	1	1 V	SOT-23-5	3.3 V	Surface Mount	Positive	2.7 V	Step-Down	Buck	Yes	85 °C	-30 °C
Texas Instruments LM3674MF-1.875/NOPB			Fixed						2 MHz			600 mA			5.5 V	1	1.875 V	SOT-23-5		Surface Mount	Positive	2.7 V	Step-Down	Buck	Yes	85 °C	-30 °C
Texas Instruments LM3674MF-1.5			Fixed						2 MHz			600 mA			5.5 V	1	1.5 V	SOT-23-5		Surface Mount	Positive	2.7 V	Step-Down	Buck	Yes	85 °C	-30 °C
Texas Instruments LM3674MF-1.2			Fixed						2 MHz			600 mA			5.5 V	1	1.2 V	SOT-23-5		Surface Mount	Positive	2.7 V	Step-Down	Buck	Yes	85 °C	-30 °C
Texas Instruments LM3674MFX-2.8			Fixed						2 MHz			600 mA			5.5 V	1	2.8 V	SOT-23-5		Surface Mount	Positive	2.7 V	Step-Down	Buck	Yes	85 °C	-30 °C
Texas Instruments LM3674MF-ADJEV	Board(s)	1	Non-Isolated	1 count	Fully Populated	Buck	Board	DC/DC Step Down	2 MHz		LM3674	600 mA	2.7 V	5.5 V					3.3 V									1 V
Texas Instruments LM3674MFX-1.2			Fixed						2 MHz			600 mA			5.5 V	1	1.2 V	SOT-23-5		Surface Mount	Positive	2.7 V	Step-Down	Buck	Yes	85 °C	-30 °C
Texas Instruments LM3674MFX-1.8			Fixed						2 MHz			600 mA			5.5 V	1	1.8 V	SOT-23-5		Surface Mount	Positive	2.7 V	Step-Down	Buck	Yes	85 °C	-30 °C
Texas Instruments LM3674MF-ADJ			Adjustable						2 MHz			600 mA			5.5 V	1	1 V	SOT-23-5	3.3 V	Surface Mount	Positive	2.7 V	Step-Down	Buck	Yes	85 °C	-30 °C

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

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CAD

3D models and CAD resources for this part

Documents

Technical documentation and resources

LM3674 2-MHz, 600-mA Step-Down DC-DC Converter in SOT-23 datasheet (Rev. G)

2-Port USB 3.0 Hub (TIDA-00287)

AN-1427 LM3674 Evaluation Board (Rev. K)

Quick Reference Guide To TI Buck Switching DC/DC Application Notes (Rev. B)