Texas Instruments LMR62421XMFE/NOPB

Mfr. Part

Base product number LMR62421

Manufacturer

Texas Instruments TI

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Detailed Description

SIMPLE SWITCHER step up and SEPIC DC DC switching regulator with an internal 2.1 A power switch

Wide output adjustment from 2.7 V up to 24 V using external resistors

Operates from 2.7 V to 5.5 V input

High switching frequency at 1.6 MHz to allow small inductors and capacitors

Non synchronous topology that uses an external Schottky diode

Tiny SOT 23 5 package for space constrained designs

RoHS3 compliant lead free NOPB finish

Ideal for battery powered and portable systems that need boost or buck boost via SEPIC

Key Features

Topology boost and SEPIC

Function step up and step up step down with SEPIC

Output type adjustable

Single output

Internal switch current rating 2.1 A switch

Input voltage range 2.7 V to 5.5 V

Output voltage range 2.7 V to 24 V adjustable

Switching frequency 1.6 MHz for compact magnetics

Positive output configuration

Non synchronous rectification external diode required

Enable pin for on off control

Surface mount SOT 23 5 for ultra small footprint

Operating junction temperature range minus 40 C to 125 C

SIMPLE SWITCHER family for easy design and stable operation

Protections typically include cycle by cycle current limit and thermal shutdown refer to datasheet for details

Key Advantages

Very small solution size thanks to 1.6 MHz operation and SOT 23 5 package

Flexible output range covers 2.7 V to 24 V for many rails and bias supplies

SEPIC capable so it regulates even when input is above or below desired output

High efficiency over a wide load range using external optimized diode and inductor

Simple to design with internal compensation and the SIMPLE SWITCHER ecosystem

Low external component count reduces BOM cost and design time

Robust protections help improve system reliability

Packaging

Supply form tape and reel TR suitable for automated SMT assembly

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

Package material standard epoxy mold compound with copper leadframe and lead free NOPB plating RoHS3 compliant

Approximate body size about 2.9 mm x 1.6 mm x 1.1 mm typical SOT 23 5 footprint

Pin configuration 5 pins typical assignment SW VIN GND FB EN verify exact pinout in the datasheet before layout

Mounting type surface mount

Thermal characteristics operation rated for junction temperature from minus 40 C to 125 C use good PCB copper for heat spreading

Electrical properties key limits input 2.7 V to 5.5 V output 2.7 V to 24 V adjustable switching at 1.6 MHz non synchronous 2.1 A internal switch

Lifecycle

Status active in production at TI not nearing discontinuation based on current public information

Suggested alternatives and similar devices from TI

- LM27313XMF NOPB 1.6 MHz boost regulator with 2 A switch in SOT 23 5 very similar electrical profile check pinout and limits

- LMR62014XMF NOPB boost with 1.4 A switch lower switch current suitable for lighter loads

- TPS61087 adjustable high voltage boost higher power option different package and features

- TPS61200 series synchronous boost lower current very high efficiency small packages

- TPS61175 boost controller 2 A external switch higher flexibility not SOT 23

Compare electrical ratings pinout features and compensation before drop in substitution

If you need form fit function drop in cross or lifecycle confirmation contact Y IC sales via our website for the latest guidance and vetted alternatives

Key Application Areas

LCD and OLED bias rails

Portable and battery powered devices that need higher or regulated rails from single cell or dual cell sources

Sensor and analog bias supplies requiring 5 V 12 V or up to 24 V

Wireless modules and RF PA biasing where SEPIC helps ride through input dips and surges

Industrial and automotive infotainment loads within the specified temperature and voltage limits

Pre regulation for isolated converters or gate drive supplies

Datasheet

Y IC hosts the most authoritative and up to date datasheet for LMR62421XMFE NOPB on our product page

Download the datasheet now on our site for full specifications design equations typical applications and layout guidance

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