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 (PLN) 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 100 mA up-42V Input SD DC/DC Reg A 926-L A 926-L2840XMKXADJLNPB LM2840XMK-ADJL/NOPB Texas Instruments 1: 14,34 zł 4 478In 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 478In Stock	Cut Tape 14,34 zł 10,82 zł 9,94 zł 8,98 zł View Reel 7,22 zł 8,54 zł 8,45 zł 7,22 zł 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: 17,86 zł 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 17,86 zł 13,60 zł 12,54 zł 11,35 zł Reel 10,12 zł View 10,78 zł 10,74 zł 9,86 zł 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 600 mA up-42V Input SD DC/DC Reg A 926-L A 926-LM2842XQMKX/NOPB LM2842XQMK/NOPB Texas Instruments 1: 17,69 zł 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 17,69 zł 13,42 zł 12,36 zł 11,22 zł 10,69 zł Reel 9,50 zł 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: 17,69 zł 1 230In 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 230In Stock	Cut Tape 17,69 zł 13,42 zł 12,36 zł 11,22 zł 10,69 zł Reel 9,33 zł 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 SIMPLE SWITCHER® 42V 300mA Step-Dow LM2841XQMK/NOPB Texas Instruments 1: 15,53 zł 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 15,53 zł 11,75 zł 10,82 zł 9,77 zł Reel 8,23 zł View 9,28 zł 9,24 zł 8,14 zł 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 SIMPLE SWITCHER® 42V 100mA Step-Dow LM2840XQMK/NOPB Texas Instruments 1: 14,12 zł 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 14,12 zł 10,69 zł 9,81 zł 8,89 zł Reel 7,70 zł View 8,45 zł 8,27 zł 7,44 zł 7,35 zł 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: 15,80 zł 10 931In 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	10 931In Stock	Cut Tape 15,80 zł 11,97 zł 10,96 zł 9,90 zł Reel 8,80 zł View 9,42 zł 9,37 zł 8,54 zł 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: 13,86 zł 766In Stock 3 000Expected 12/21/2026	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	766In Stock 3 000Expected 12/21/2026	Cut Tape 13,86 zł 10,38 zł 9,50 zł 8,54 zł Reel 6,95 zł View 8,05 zł 7,96 zł 7,70 zł 6,91 zł 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: 12,19 zł 2 459In 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 459In Stock	Cut Tape 12,19 zł 9,15 zł 8,40 zł 7,52 zł Reel 6,64 zł View 7,17 zł 7,04 zł 6,42 zł 6,34 zł 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® 4.5V to 42V 0.6A S A 926-LM2842XQMK/NOPB LM2842XQMKX/NOPB Texas Instruments 1: 15,36 zł 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 15,36 zł 11,62 zł 10,69 zł 9,64 zł View Reel 8,27 zł 9,15 zł 9,11 zł 8,80 zł 8,27 zł 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: 15,49 zł 2 543In 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 543In Stock	Cut Tape 15,49 zł 13,99 zł 13,77 zł 13,64 zł 12,85 zł Reel 8,32 zł 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 300MA-42V INPUT STEP DOWN DC/DC REG A 92 A 926-L2841XMKXADJLNPB LM2841XMK-ADJL/NOPB Texas Instruments 1: 16,10 zł 4 628In Stock	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	4 628In Stock	Cut Tape 16,10 zł 12,19 zł 11,22 zł 10,12 zł Reel 9,06 zł View 9,59 zł 8,45 zł 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 600MA-42V INPUT STEP DOWN DC/DC REG A 92 A 926-L2842XMKXADJLNPB LM2842XMK-ADJL/NOPB Texas Instruments 1: 15,58 zł 2 871In 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 871In Stock	Cut Tape 15,58 zł 11,79 zł 10,87 zł 9,81 zł Reel 8,71 zł View 9,33 zł 9,28 zł 8,40 zł 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: 13,38 zł 1 982In 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	1 982In Stock	Cut Tape 13,38 zł 10,12 zł 9,28 zł 8,36 zł Reel 7,13 zł View 7,92 zł 7,83 zł 7,44 zł 7,08 zł 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: 15,58 zł 2 485In 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 485In Stock	Cut Tape 15,58 zł 11,79 zł 10,87 zł 9,81 zł Reel 8,67 zł View 9,33 zł 9,28 zł 8,40 zł 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: 11,48 zł 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 11,48 zł 9,81 zł 7,70 zł Reel 6,69 zł 6,64 zł 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: 13,99 zł 75In Stock 3 000Expected 10/9/2026	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	75In Stock 3 000Expected 10/9/2026	Cut Tape 13,99 zł 10,47 zł 9,59 zł 8,62 zł Reel 7,04 zł View 8,18 zł 8,01 zł 7,79 zł 6,95 zł 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: 13,38 zł 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 13,38 zł 11,35 zł Reel 7,66 zł 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 SIMPLE SWITCHER® 42V 300mA Step-Dow A 926-LM2841YQMK/NOPB LM2841YQMKX/NOPB Texas Instruments 1: 15,53 zł 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 15,53 zł 11,75 zł 10,82 zł 9,77 zł Reel 8,40 zł View 9,28 zł 9,24 zł 8,93 zł 8,27 zł 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® 42V 100mA Step-Dow A 926-LM2840YQMKX/NOPB LM2840YQMK/NOPB Texas Instruments 1: 16,46 zł 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 16,46 zł 12,41 zł 11,44 zł 10,30 zł Reel 9,06 zł View 9,77 zł 9,68 zł 8,89 zł 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 3 000: 7,04 zł Non-Stocked Lead-Time 20 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 20 Weeks	Reel 7,04 zł 7,00 zł	Min.: 3 000 Mult.: 3 000 : 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

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

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