Texas Instruments LM3674MF-ADJ/NOPB

Mfr. Part

LM3674MF-ADJ/NOPB

Manufacturer

Luminary Micro Texas Instruments

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Detailed Description

600 mA synchronous buck DC-DC regulator

Adjustable output 1.0 V to 3.3 V

2 MHz switching frequency for very small inductors and capacitors

Wide input range 2.7 V to 5.5 V for single-cell Li-ion and 5 V rails

Positive output configuration with one output channel

Surface-mount SOT-23-5 package

RoHS3 compliant lead-free NOPB variant

Operating temperature range minus 30 to plus 85 degrees C ambient

Key Features

Step-down buck converter with synchronous rectification

Adjustable output 1.0 to 3.3 V via external resistor divider

Output current up to 600 mA

2 MHz fixed switching frequency

Input voltage range 2.7 to 5.5 V

Single positive output

SOT-23-5 footprint SC-74A SOT-753

Surface mount ready

Tape and Reel packaging for automated assembly

Low noise high frequency operation helps shrink passives and reduce EMI

Enabled pin for simple on off control

Base product number LM3674

Key Advantages

Very small solution size thanks to 2 MHz frequency

Efficient synchronous design helps extend battery life

Simple design and easy layout in space limited boards

Adjustable output covers common logic rails from 1.0 V to 3.3 V

One inductor and two capacitors typically required for a clean compact power rail

Works well from Li-ion USB and 5 V sources

Stable operation over the full specified temperature range

Packaging

Type Tape and Reel TR for automated pick and place

Package case SOT-23-5 also known as SC-74A or SOT-753

Supplier device package SOT-23-5

Material Molded epoxy body with tin plated leads

Approximate body size about 2.9 mm by 1.6 mm low profile height around 1.1 mm typical

Pin count 5 pins nominal pitch about 0.95 mm

Typical pin functions SW GND FB EN VIN check the datasheet for exact pin order

Mounting Surface mount compatible with standard reflow

Thermal characteristics Small package requires good copper area for heat spreading follow layout guidance for best thermal performance

Electrical properties Input 2.7 to 5.5 V Output adjustable 1.0 to 3.3 V Current up to 600 mA Switching 2 MHz Synchronous rectifier for high efficiency

Lifecycle

Current status Active for many designs based on our latest information

Not nearing discontinuation to our knowledge at the time of writing

Equivalent and alternative models from the same family Fixed output LM3674 options with similar performance and pinout

LM3674MF-1.0 NOPB

LM3674MF-1.2 NOPB

LM3674MF-1.5 NOPB

LM3674MF-1.8 NOPB

LM3674MF-2.5 NOPB

LM3674MF-3.3 NOPB

Other Texas Instruments alternatives with similar input range and compact footprints consult suitability and pinout

TPS6226x family compact buck converters for 2.5 to 6 V input

TPS6217x family low power buck converters for battery powered systems

TPS6284x family high efficiency buck converters for 1.8 to 5.5 V input

Actual interchangeability depends on specifics such as pinout compensation network current limit and protection features

If you need a pin to pin or functionally equivalent part contact our sales team via the Y-IC website and we will match the best option for your design

Key Application Areas

Smartphones tablets handhelds and wearables

Battery powered IoT sensor nodes and wireless modules

Portable audio and camera subsystems

MCU and FPGA core or IO rails from Li-ion or 5 V sources

3.3 V logic rails from USB or battery

Point of load regulation in compact consumer and industrial devices

Datasheet

Y-IC hosts the most authoritative datasheet for this product model

We recommend downloading the datasheet from this page for full electrical specifications design guidance layout tips and pin details

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