Integrated Circuits (ICs)

LMR62421XSD/NOPB

Active

SIMPLE SWITCHER 2.7V TO 5.5V, 24VOUT, 2.1A BOOST CONVERTER IN SOT-23

Deep-Dive with AI

Search across all available documentation for this part.

DocumentsAN-1566 Techniques for Thermal Analysis of Switching Power Supply Designs (Rev. A)AN-2197 LMR62421 Demo Board (Rev. A)+23

Integrated Circuits (ICs)

LMR62421XSD/NOPB

Active

Texas Instruments

SIMPLE SWITCHER 2.7V TO 5.5V, 24VOUT, 2.1A BOOST CONVERTER IN SOT-23

Deep-Dive with AI

DocumentsAN-1566 Techniques for Thermal Analysis of Switching Power Supply Designs (Rev. A)AN-2197 LMR62421 Demo Board (Rev. A)+23

Specifications Series Pricing Description Documents

Technical Specifications

Parameters and characteristics for this part

Specification	LMR62421XSD/NOPB

Current - Output	2.1 A
Frequency - Switching	1.6 MHz
Function	Step-Up, Step-Up/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	Adjustable
Supplier Device Package	6-WSON (3x3)
Synchronous Rectifier	False
Topology	SEPIC, Boost
Voltage - Input (Max) [Max]	5.5 V
Voltage - Input (Min) [Min]	2.7 V
Voltage - Output (Max)	24 V
Voltage - Output (Min/Fixed)	2.7 V

LMR62421 Series

SIMPLE SWITCHER 2.7V to 5.5V, 24Vout, 2.1A Boost Converter in SOT-23

Part	Output Configuration	Voltage - Input (Min) [Min]	Current - Output	Supplier Device Package	Voltage - Output (Min/Fixed)	Voltage - Output (Max)	Output Type	Number of Outputs	Voltage - Input (Max) [Max]	Operating Temperature [Min]	Operating Temperature [Max]	Mounting Type	Frequency - Switching	Function	Topology	Package / Case	Voltage - Input [Min]	Voltage - Input [Max]	Utilized IC / Part	Supplied Contents	Regulator Topology	Main Purpose	Outputs and Type	Outputs and Type	Board Type	Voltage - Output
Texas Instruments LMR62421XSD/NOPB	Positive	2.7 V	2.1 A	6-WSON (3x3)	2.7 V	24 V	Adjustable	1	5.5 V	-40 °C	125 ¯C	Surface Mount	1.6 MHz	Step-Up Step-Up/Step-Down	Boost SEPIC
Texas Instruments LMR62421XMFE/NOPB	Positive	2.7 V	2.1 A	SOT-23-5	2.7 V	24 V	Adjustable	1	5.5 V	-40 °C	125 ¯C	Surface Mount	1.6 MHz	Step-Up Step-Up/Step-Down	Boost SEPIC	SC-74A SOT-753
Texas Instruments LMR62421XSDDEMO/NOPB			500 mA										1.6 MHz				2.7 V	5.5 V	LMR62421	Board(s)	Boost	DC/DC Step Up	Non-Isolated	1	Fully Populated	12 V
Texas Instruments LMR62421XSDE/NOPB	Positive	2.7 V	2.1 A	6-WSON (3x3)	2.7 V	24 V	Adjustable	1	5.5 V	-40 °C	125 ¯C	Surface Mount	1.6 MHz	Step-Up Step-Up/Step-Down	Boost SEPIC
Texas Instruments LMR62421XMF/NOPB	Positive	2.7 V	2.1 A	SOT-23-5	2.7 V	24 V	Adjustable	1	5.5 V	-40 °C	125 ¯C	Surface Mount	1.6 MHz	Step-Up Step-Up/Step-Down	Boost SEPIC	SC-74A SOT-753

Pricing

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

Distributor	Package	Quantity	$

Digikey	Cut Tape (CT)	1	$ 1.61
		10	$ 1.44
		25	$ 1.36
		100	$ 1.16
		250	$ 1.09
		500	$ 0.95
	Digi-Reel®	1	$ 1.61
		10	$ 1.44
		25	$ 1.36
		100	$ 1.16
		250	$ 1.09
		500	$ 0.95
	Tape & Reel (TR)	1000	$ 0.79
		2000	$ 0.73
		5000	$ 0.71
		10000	$ 0.68
Texas Instruments	SMALL T&R	1	$ 1.21
		100	$ 1.00
		250	$ 0.72
		1000	$ 0.54

Description

General part information

LMR62421 Series

The LMR62421 is an easy-to-use, space-efficient 2.1A low-side switch regulator ideal for Boost and SEPIC DC-DC regulation. It provides all the active functions to provide local DC/DC conversion with fast-transient response and accurate regulation in the smallest PCB area. Switching frequency is internally set to 1.6 MHz, allowing the use of extremely small surface mount inductor and chip capacitors while providing efficiencies near 90%. Current-mode control and internal compensation provide ease-of-use, minimal component count, and high-performance regulation over a wide range of operating conditions. External shutdown features an ultra-low standby current of 80 nA ideal for portable applications. Tiny 5-pin SOT-23 and 6-pin WSON packages provide space-savings. Additional features include internal soft-start, circuitry to reduce inrush current, pulse-by-pulse current limit, and thermal shutdown.

Documents

Technical documentation and resources

LMR62421XSD/NOPB

Deep-Dive with AI

LMR62421XSD/NOPB

Deep-Dive with AI

Technical Specifications

LMR62421 Series

Pricing

Description

LMR62421 Series

Documents

AN-1566 Techniques for Thermal Analysis of Switching Power Supply Designs (Rev. A)

AN-2197 LMR62421 Demo Board (Rev. A)

LMR62421 SIMPLE SWITCHER ® 24Vout, 2.1A Step-Up Voltage Regulator in SOT-23 datasheet (Rev. B)

DC/DC converter datasheets- current limit - part two

DC/DC converter datasheets: current limit - part one

Working With Boost Converters

스트컨버터의 전력계 기본 계산 (Rev. D)

Quantifying the value of wide VIN

AN-2155 Layout Tips for EMI Reduction in DC/ DC Converters (Rev. A)

Power Management Guide 2018 (Rev. R)

Inverted SEPIC Made SIMPLE

AN-643 EMI/RFI Board Design (Rev. B)

AN-2162 Simple Success With Conducted EMI From DC-DC Converters (Rev. C)

DC/DC converter datasheets – System losses demystified

Semiconductor and IC Package Thermal Metrics (Rev. D)

Input and Output Capacitor Selection

AN-1246 Stresses in Wide Input DC-DC Converters (Rev. C)

Understanding Boost Power Stages In Switchmode Power Supplies

AN-1520 A Guide to Board Layout for Best Thermal Resistance for Exposed Packages (Rev. B)

AN-1889 How to Measure the Loop Transfer Function of Power Supplies (Rev. A)

DC/DC converter datasheets – System efficiency demystified

AN-1229 SIMPLE SWITCHER PCB Layout Guidelines (Rev. C)

Softstart Using Constant Current Constant Voltage Approach

Basic Calculation of a Boost Converter's Power Stage (Rev. D)

AN-1149 Layout Guidelines for Switching Power Supplies (Rev. C)

LMR62421 Series