Voltage Regulators - Switching Regulators

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LM284x/LM284x-Q1 Step-Down DC/DC Regulators

Texas Instruments LM284x/LM284x-Q1 Step-Down DC/DC Regulators feature a wide input range from 4.5V-42V and are suitable for a wide range of applications, such as power conditioning from unregulated sources. These DC/DC buck regulators feature a low RDSON (0.9Ω typical) internal switch for maximum efficiency (85% typical).

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (USD) Filter the results in the table by unit price based on your quantity.	Qty.	Mounting Style	Package/Case	Topology	Output Voltage	Output Current	Number of Outputs	Switching Frequency	Minimum Operating Temperature	Maximum Operating Temperature	Qualification	Series	Packaging
Switching Voltage Regulators SIMPLE SWITCHER® 42V 300mA Step-Dow LM2841XQMK/NOPB Texas Instruments 1: $4.11 3,366In Stock	Mfr. Part No. LM2841XQMK/NOPB Mouser Part No 926-LM2841XQMK/NOPB	Texas Instruments	Switching Voltage Regulators SIMPLE SWITCHER® 42V 300mA Step-Dow Learn More about Texas Instruments ti national lm2840	Datasheet	3,366In Stock	Cut Tape $4.11 $3.11 $2.86 $2.58 Reel $2.18 View $2.45 $2.44 $2.15 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	SMD/SMT	SOT-23-THIN-6	Buck	765 mV to 34 V	300 mA	1 Output	550 kHz	- 40 C	+ 125 C	AEC-Q100	LM2841	Reel, Cut Tape, MouseReel
Switching Voltage Regulators 600 mA up-42V Input SD DC/DC Reg A 926-L A 926-LM2842XQMKX/NOPB LM2842XQMK/NOPB Texas Instruments 1: $4.67 1,163In Stock	Mfr. Part No. LM2842XQMK/NOPB Mouser Part No 926-LM2842XQMK/NOPB	Texas Instruments	Switching Voltage Regulators 600 mA up-42V Input SD DC/DC Reg A 926-L A 926-LM2842XQMKX/NOPB Learn More about Texas Instruments ti national lm2840	Datasheet	1,163In Stock	Cut Tape $4.67 $3.55 $3.27 $2.96 $2.82 Reel $2.51 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	SMD/SMT	SOT-23-THIN-6	Buck	765 mV to 34 V	600 mA	1 Output	550 kHz	- 40 C	+ 125 C	AEC-Q100	LM2842	Reel, Cut Tape, MouseReel
Switching Voltage Regulators SIMPLE SWITCHER® 4.5V to 42V 0.6A S A 926-LM2842YQMKX/NOPB LM2842YQMK/NOPB Texas Instruments 1: $4.67 1,246In Stock	Mfr. Part No. LM2842YQMK/NOPB Mouser Part No 926-LM2842YQMK/NOPB	Texas Instruments	Switching Voltage Regulators SIMPLE SWITCHER® 4.5V to 42V 0.6A S A 926-LM2842YQMKX/NOPB Learn More about Texas Instruments ti national lm2840	Datasheet	1,246In Stock	Cut Tape $4.67 $3.55 $3.27 $2.96 $2.81 Reel $2.42 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	SMD/SMT	SOT-23-THIN-6	Buck	765 mV to 34 V	600 mA	1 Output	1.25 MHz	- 40 C	+ 125 C	AEC-Q100	LM2842	Reel, Cut Tape, MouseReel
Switching Voltage Regulators 100 mA up-42V Input SD DC/DC Reg A 926-L A 926-L2840XMKXADJLNPB LM2840XMK-ADJL/NOPB Texas Instruments 1: $3.79 4,488In Stock	Mfr. Part No. LM2840XMK-ADJL/NOPB Mouser Part No 926-LM2840XMKADJLNPB	Texas Instruments	Switching Voltage Regulators 100 mA up-42V Input SD DC/DC Reg A 926-L A 926-L2840XMKXADJLNPB Learn More about Texas Instruments ti national lm2840	Datasheet	4,488In Stock	Cut Tape $3.79 $2.86 $2.63 $2.37 View Reel $1.96 $2.25 $2.23 $1.96 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	SMD/SMT	SOT-23-THIN-6	Buck	765 mV to 34 V	100 mA	1 Output	550 kHz	- 40 C	+ 125 C		LM2840	Reel, Cut Tape, MouseReel
Switching Voltage Regulators SIMPLE SWITCHER® 42V 300mA Step-Dow A 926-LM2841YQMKX/NOPB LM2841YQMK/NOPB Texas Instruments 1: $4.72 573In Stock	Mfr. Part No. LM2841YQMK/NOPB Mouser Part No 926-LM2841YQMK/NOPB	Texas Instruments	Switching Voltage Regulators SIMPLE SWITCHER® 42V 300mA Step-Dow A 926-LM2841YQMKX/NOPB Learn More about Texas Instruments ti national lm2840	Datasheet	573In Stock	Cut Tape $4.72 $3.59 $3.31 $3.00 Reel $2.67 View $2.85 $2.84 $2.61 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	SMD/SMT	SOT-23-THIN-6	Buck	765 mV to 34 V	300 mA	1 Output	1.25 MHz	- 40 C	+ 125 C	AEC-Q100	LM2841	Reel, Cut Tape, MouseReel
Switching Voltage Regulators SIMPLE SWITCHER® 42V 100mA Step-Dow LM2840XQMK/NOPB Texas Instruments 1: $3.73 429In Stock	Mfr. Part No. LM2840XQMK/NOPB Mouser Part No 926-LM2840XQMK/NOPB	Texas Instruments	Switching Voltage Regulators SIMPLE SWITCHER® 42V 100mA Step-Dow Learn More about Texas Instruments ti national lm2840	Datasheet	429In Stock	Cut Tape $3.73 $2.82 $2.59 $2.33 Reel $2.03 View $2.23 $2.19 $1.97 $1.94 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	SMD/SMT	SOT-23-THIN-6	Buck	765 mV to 34 V	100 mA	1 Output	550 kHz	- 40 C	+ 125 C	AEC-Q100	LM2840	Reel, Cut Tape, MouseReel
Switching Voltage Regulators 300MA-42V INPUT STEP DOWN DC/DC REG A 92 A 926-L2841YMKXADJLNPB LM2841YMK-ADJL/NOPB Texas Instruments 1: $4.17 11,366In Stock	Mfr. Part No. LM2841YMK-ADJL/NOPB Mouser Part No 926-M2841YMKADJLNOPB	Texas Instruments	Switching Voltage Regulators 300MA-42V INPUT STEP DOWN DC/DC REG A 92 A 926-L2841YMKXADJLNPB Learn More about Texas Instruments ti national lm2840	Datasheet	11,366In Stock	Cut Tape $4.17 $3.16 $2.90 $2.62 Reel $2.32 View $2.49 $2.48 $2.25 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	SMD/SMT	SOT-23-THIN-6	Buck	765 mV to 34 V	300 mA	1 Output	1.25 MHz	- 40 C	+ 125 C		LM2841	Reel, Cut Tape, MouseReel
Switching Voltage Regulators SIMPLE SWITCHER® 4.5V to 42V 0.6A S A 926-M2842XMKADJLNOPB LM2842XMKX-ADJL/NOPB Texas Instruments 1: $3.66 1,212In Stock	Mfr. Part No. LM2842XMKX-ADJL/NOPB Mouser Part No 926-L2842XMKXADJLNPB	Texas Instruments	Switching Voltage Regulators SIMPLE SWITCHER® 4.5V to 42V 0.6A S A 926-M2842XMKADJLNOPB Learn More about Texas Instruments ti national lm2840	Datasheet	1,212In Stock	Cut Tape $3.66 $2.74 $2.51 $2.25 Reel $1.84 View $2.13 $2.10 $2.04 $1.82 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	SMD/SMT	SOT-23-THIN-6	Buck	765 mV to 34 V	600 mA	1 Output	550 kHz	- 40 C	+ 125 C		LM2842	Reel, Cut Tape, MouseReel
Switching Voltage Regulators SIMPLE SWITCHER® 42V 100mA Step-Dow LM2840YMK-ADJL/NOPB Texas Instruments 1: $3.22 2,392In Stock	Mfr. Part No. LM2840YMK-ADJL/NOPB Mouser Part No 926-LM2840YMKADJLNPB	Texas Instruments	Switching Voltage Regulators SIMPLE SWITCHER® 42V 100mA Step-Dow Learn More about Texas Instruments ti national lm2840	Datasheet	2,392In Stock	Cut Tape $3.22 $2.42 $2.22 $1.99 Reel $1.76 View $1.89 $1.86 $1.70 $1.67 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	SMD/SMT	SOT-23-THIN-6	Buck	765 mV to 34 V	100 mA	1 Output	1.25 MHz	- 40 C	+ 125 C		LM2840	Reel, Cut Tape, MouseReel
Switching Voltage Regulators SIMPLE SWITCHER® 42V 300mA Step-Dow A 926-LM2841YQMK/NOPB LM2841YQMKX/NOPB Texas Instruments 1: $4.11 860In Stock	Mfr. Part No. LM2841YQMKX/NOPB Mouser Part No 926-LM2841YQMKX/NOPB	Texas Instruments	Switching Voltage Regulators SIMPLE SWITCHER® 42V 300mA Step-Dow A 926-LM2841YQMK/NOPB Learn More about Texas Instruments ti national lm2840	Datasheet	860In Stock	Cut Tape $4.11 $3.11 $2.86 $2.58 View Reel $2.22 $2.45 $2.44 $2.36 $2.22 Quote MouseReel Available	Min.: 1 Mult.: 1 : 3,000	SMD/SMT	SOT-23-THIN-6	Buck	765 mV to 34 V	300 mA	1 Output	1.25 MHz	- 40 C	+ 125 C	AEC-Q100	LM2841	Reel, Cut Tape, MouseReel
Switching Voltage Regulators SIMPLE SWITCHER® 4.5V to 42V 0.6A S A 926-LM2842XQMK/NOPB LM2842XQMKX/NOPB Texas Instruments 1: $4.06 1,752In Stock	Mfr. Part No. LM2842XQMKX/NOPB Mouser Part No 926-LM2842XQMKX/NOPB	Texas Instruments	Switching Voltage Regulators SIMPLE SWITCHER® 4.5V to 42V 0.6A S A 926-LM2842XQMK/NOPB Learn More about Texas Instruments ti national lm2840	Datasheet	1,752In Stock	Cut Tape $4.06 $3.07 $2.82 $2.55 View Reel $2.19 $2.42 $2.41 $2.33 $2.19 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	SMD/SMT	SOT-23-THIN-6	Buck	765 mV to 34 V	600 mA	1 Output	550 kHz	- 40 C	+ 125 C	AEC-Q100	LM2842	Reel, Cut Tape, MouseReel
Switching Voltage Regulators SIMPLE SWITCHER® 4.5V to 42V 0.6A S A 926-LM2842YQMK/NOPB LM2842YQMKX/NOPB Texas Instruments 1: $4.09 2,553In Stock	Mfr. Part No. LM2842YQMKX/NOPB Mouser Part No 926-LM2842YQMKX/NOPB	Texas Instruments	Switching Voltage Regulators SIMPLE SWITCHER® 4.5V to 42V 0.6A S A 926-LM2842YQMK/NOPB Learn More about Texas Instruments ti national lm2840	Datasheet	2,553In Stock	Cut Tape $4.09 $3.70 $3.64 $3.61 $3.39 Reel $2.20 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	SMD/SMT	SOT-23-THIN-6	Buck	765 mV to 34 V	600 mA	1 Output	1.25 MHz	- 40 C	+ 125 C	AEC-Q100	LM2842	Reel, Cut Tape, MouseReel
Switching Voltage Regulators 600MA-42V INPUT STEP DOWN DC/DC REG A 92 A 926-L2842XMKXADJLNPB LM2842XMK-ADJL/NOPB Texas Instruments 1: $4.12 2,822In Stock	Mfr. Part No. LM2842XMK-ADJL/NOPB Mouser Part No 926-M2842XMKADJLNOPB	Texas Instruments	Switching Voltage Regulators 600MA-42V INPUT STEP DOWN DC/DC REG A 92 A 926-L2842XMKXADJLNPB Learn More about Texas Instruments ti national lm2840	Datasheet	2,822In Stock	Cut Tape $4.12 $3.12 $2.87 $2.59 Reel $2.30 View $2.46 $2.45 $2.22 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	SMD/SMT	SOT-23-THIN-6	Buck	765 mV to 34 V	600 mA	1 Output	550 kHz	- 40 C	+ 125 C		LM2842	Reel, Cut Tape, MouseReel
Switching Voltage Regulators 4.5V to 42V 300mA S IMPLE SWITCHER buck A 926-M2841XMKADJLNOPB LM2841XMKX-ADJL/NOPB Texas Instruments 1: $3.54 2,189In Stock	Mfr. Part No. LM2841XMKX-ADJL/NOPB Mouser Part No 926-L2841XMKXADJLNPB	Texas Instruments	Switching Voltage Regulators 4.5V to 42V 300mA S IMPLE SWITCHER buck A 926-M2841XMKADJLNOPB Learn More about Texas Instruments ti national lm2840	Datasheet	2,189In Stock	Cut Tape $3.54 $2.67 $2.45 $2.21 Reel $1.88 View $2.09 $2.07 $1.96 $1.87 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	SMD/SMT	SOT-23-THIN-6	Buck	765 mV to 34 V	300 mA	1 Output	550 kHz	- 40 C	+ 125 C		LM2841	Reel, Cut Tape, MouseReel
Switching Voltage Regulators 600MA-42V INPUT STEP DOWN DC/DC REG A 92 A 926-L2842YMKXADJLNPB LM2842YMK-ADJL/NOPB Texas Instruments 1: $4.12 2,805In Stock	Mfr. Part No. LM2842YMK-ADJL/NOPB Mouser Part No 926-M2842YMKADJLNOPB	Texas Instruments	Switching Voltage Regulators 600MA-42V INPUT STEP DOWN DC/DC REG A 92 A 926-L2842YMKXADJLNPB Learn More about Texas Instruments ti national lm2840	Datasheet	2,805In Stock	Cut Tape $4.12 $3.12 $2.87 $2.59 Reel $2.29 View $2.46 $2.45 $2.22 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	SMD/SMT	SOT-23-THIN-6	Buck	765 mV to 34 V	600 mA	1 Output	1.25 MHz	- 40 C	+ 125 C		LM2842	Reel, Cut Tape, MouseReel
Switching Voltage Regulators SIMPLE SWITCHER® 42V 100mA Step-Dow A 926-LM2840XMKADJLNPB LM2840XMKX-ADJL/NOPB Texas Instruments 1: $3.04 540In Stock	Mfr. Part No. LM2840XMKX-ADJL/NOPB Mouser Part No 926-L2840XMKXADJLNPB	Texas Instruments	Switching Voltage Regulators SIMPLE SWITCHER® 42V 100mA Step-Dow A 926-LM2840XMKADJLNPB Learn More about Texas Instruments ti national lm2840	Datasheet	540In Stock	Cut Tape $3.04 $2.59 $2.03 Reel $1.77 $1.76 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	SMD/SMT	SOT-23-THIN-6	Buck	765 mV to 34 V	100 mA	1 Output	550 kHz	- 40 C	+ 125 C		LM2840	Reel, Cut Tape, MouseReel
Switching Voltage Regulators 4.5V to 42V 300mA S IMPLE SWITCHER buck A 926-M2841YMKADJLNOPB LM2841YMKX-ADJL/NOPB Texas Instruments 1: $3.70 93In Stock 3,000Expected 09/10/2026	Mfr. Part No. LM2841YMKX-ADJL/NOPB Mouser Part No 926-L2841YMKXADJLNPB	Texas Instruments	Switching Voltage Regulators 4.5V to 42V 300mA S IMPLE SWITCHER buck A 926-M2841YMKADJLNOPB Learn More about Texas Instruments ti national lm2840	Datasheet	93In Stock 3,000Expected 09/10/2026	Cut Tape $3.70 $2.77 $2.54 $2.28 Reel $1.86 View $2.16 $2.12 $2.06 $1.84 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	SMD/SMT	SOT-23-THIN-6	Buck	765 mV to 34 V	300 mA	1 Output	1.25 MHz	- 40 C	+ 125 C		LM2841	Reel, Cut Tape, MouseReel
Switching Voltage Regulators SIMPLE SWITCHER® 42V 100mA Step-Dow A 926-LM2840YQMK/NOPB LM2840YQMKX/NOPB Texas Instruments 1: $3.53 3,000In Stock	Mfr. Part No. LM2840YQMKX/NOPB Mouser Part No 926-LM2840YQMKX/NOPB	Texas Instruments	Switching Voltage Regulators SIMPLE SWITCHER® 42V 100mA Step-Dow A 926-LM2840YQMK/NOPB Learn More about Texas Instruments ti national lm2840	Datasheet	3,000In Stock	Cut Tape $3.53 $3.00 Reel $2.02 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	SMD/SMT	SOT-23-THIN-6	Buck	765 mV to 34 V	100 mA	1 Output	1.25 MHz	- 40 C	+ 125 C	AEC-Q100	LM2840	Reel, Cut Tape, MouseReel
Switching Voltage Regulators 300MA-42V INPUT STEP DOWN DC/DC REG A 92 A 926-L2841XMKXADJLNPB LM2841XMK-ADJL/NOPB Texas Instruments 1: $4.26 46In Stock 5,000Expected 05/10/2026	Mfr. Part No. LM2841XMK-ADJL/NOPB Mouser Part No 926-M2841XMKADJLNOPB	Texas Instruments	Switching Voltage Regulators 300MA-42V INPUT STEP DOWN DC/DC REG A 92 A 926-L2841XMKXADJLNPB Learn More about Texas Instruments ti national lm2840	Datasheet	46In Stock 5,000Expected 05/10/2026	Cut Tape $4.26 $3.22 $2.96 $2.68 Reel $2.39 View $2.54 $2.53 $2.23 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	SMD/SMT	SOT-23-THIN-6	Buck	765 mV to 34 V	300 mA	1 Output	550 kHz	- 40 C	+ 125 C		LM2841	Reel, Cut Tape, MouseReel
Switching Voltage Regulators SIMPLE SWITCHER® 42V 100mA Step-Dow A 926-LM2840YQMKX/NOPB LM2840YQMK/NOPB Texas Instruments 1: $4.35 122In Stock	Mfr. Part No. LM2840YQMK/NOPB Mouser Part No 926-LM2840YQMK/NOPB	Texas Instruments	Switching Voltage Regulators SIMPLE SWITCHER® 42V 100mA Step-Dow A 926-LM2840YQMKX/NOPB Learn More about Texas Instruments ti national lm2840	Datasheet	122In Stock	Cut Tape $4.35 $3.28 $3.02 $2.72 Reel $2.40 View $2.58 $2.56 $2.35 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	SMD/SMT	SOT-23-THIN-6	Buck	765 mV to 34 V	100 mA	1 Output	1.25 MHz	- 40 C	+ 125 C	AEC-Q100	LM2840	Reel, Cut Tape, MouseReel
Switching Voltage Regulators SIMPLE SWITCHER® 4.5V to 42V 0.6A S A 926-M2842YMKADJLNOPB LM2842YMKX-ADJL/NOPB Texas Instruments 1: $3.66 Non-Stocked Lead-Time 16 Weeks	Mfr. Part No. LM2842YMKX-ADJL/NOPB Mouser Part No 926-L2842YMKXADJLNPB	Texas Instruments	Switching Voltage Regulators SIMPLE SWITCHER® 4.5V to 42V 0.6A S A 926-M2842YMKADJLNOPB Learn More about Texas Instruments ti national lm2840	Datasheet	Non-Stocked Lead-Time 16 Weeks	Cut Tape $3.66 $2.74 $2.51 $2.25 Reel $1.86 View $2.13 $2.10 $1.98 $1.85 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	SMD/SMT	SOT-23-THIN-6	Buck	765 mV to 34 V	600 mA	1 Output	1.25 MHz	- 40 C	+ 125 C		LM2842	Reel, Cut Tape, MouseReel

LM284x/LM284x-Q1 Step-Down DC/DC Regulators

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