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 (HKD) 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 600 mA up-42V Input SD DC/DC Reg A 926-L A 926-LM2842XQMKX/NOPB LM2842XQMK/NOPB Texas Instruments 1: HK$38.39 1,157In 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	1,157In Stock	Cut Tape HK$38.39 HK$29.18 HK$26.88 HK$24.33 HK$23.18 Reel HK$20.63 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 100 mA up-42V Input SD DC/DC Reg A 926-L A 926-L2840XMKXADJLNPB LM2840XMK-ADJL/NOPB Texas Instruments 1: HK$31.15 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 HK$31.15 HK$23.51 HK$21.62 HK$19.48 View Reel HK$16.11 HK$18.50 HK$18.33 HK$16.11 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: HK$42.99 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 HK$42.99 HK$32.72 HK$30.17 HK$27.37 Reel HK$24.82 View HK$25.98 HK$25.15 HK$24.58 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 A 926-LM2840YQMK/NOPB LM2840YQMKX/NOPB Texas Instruments 1: HK$29.02 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 HK$29.02 HK$24.66 Reel HK$16.28 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-L2841YMKXADJLNPB LM2841YMK-ADJL/NOPB Texas Instruments 1: HK$39.70 10,669In 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	10,669In Stock	Cut Tape HK$39.70 HK$29.92 HK$27.45 HK$24.82 Reel HK$21.95 View HK$23.51 HK$23.34 HK$21.45 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 4.5V to 42V 300mA S IMPLE SWITCHER buck A 926-M2841YMKADJLNOPB LM2841YMKX-ADJL/NOPB Texas Instruments 1: HK$33.13 2,707In Stock	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	2,707In Stock	Cut Tape HK$33.13 HK$24.99 HK$22.93 HK$20.71 HK$19.81 Reel HK$16.77 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 LM2840YMK-ADJL/NOPB Texas Instruments 1: HK$26.47 2,325In 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	2,325In Stock	Cut Tape HK$26.47 HK$19.89 HK$18.25 HK$16.36 Reel HK$14.47 View HK$15.54 HK$15.29 HK$13.97 HK$13.73 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 LM2841XQMK/NOPB Texas Instruments 1: HK$38.22 2,966In 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	2,966In Stock	Cut Tape HK$38.22 HK$29.10 HK$26.80 HK$24.25 Reel HK$21.54 View HK$23.02 HK$21.37 Quote 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® 4.5V to 42V 0.6A S A 926-LM2842XQMK/NOPB LM2842XQMKX/NOPB Texas Instruments 1: HK$33.37 1,752In Stock 6,000Expected 15/2/2027	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 6,000Expected 15/2/2027	Cut Tape HK$33.37 HK$25.24 HK$23.18 HK$20.96 View Reel HK$18.00 HK$19.89 HK$19.81 HK$19.15 HK$18.00 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-LM2842YQMKX/NOPB LM2842YQMK/NOPB Texas Instruments 1: HK$38.39 1,101In 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	1,101In Stock	Cut Tape HK$38.39 HK$29.18 HK$26.88 HK$24.33 HK$23.18 Reel HK$19.73 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® 4.5V to 42V 0.6A S A 926-LM2842YQMK/NOPB LM2842YQMKX/NOPB Texas Instruments 1: HK$33.62 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 HK$33.62 HK$30.41 HK$29.92 HK$29.67 HK$27.87 Reel HK$18.08 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: HK$38.80 4,346In 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	4,346In Stock	Cut Tape HK$38.80 HK$29.51 HK$27.21 HK$24.66 Reel HK$21.95 View HK$23.43 HK$21.21 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: HK$33.87 2,899In 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	2,899In Stock	Cut Tape HK$33.87 HK$25.65 HK$23.59 HK$21.29 Reel HK$18.91 View HK$20.22 HK$20.14 HK$18.25 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: HK$33.13 2,106In 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	2,106In Stock	Cut Tape HK$33.13 HK$24.99 HK$22.93 HK$21.13 Reel HK$17.92 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: HK$33.87 2,489In 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	2,489In Stock	Cut Tape HK$33.87 HK$25.65 HK$23.59 HK$21.29 Reel HK$18.82 View HK$20.22 HK$20.14 HK$18.25 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: HK$24.99 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 HK$24.99 HK$21.29 HK$16.69 Reel HK$14.55 HK$14.47 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 SIMPLE SWITCHER® 4.5V to 42V 0.6A S A 926-M2842XMKADJLNOPB LM2842XMKX-ADJL/NOPB Texas Instruments 1: HK$30.09 12In Stock 3,000Expected 21/12/2026	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	12In Stock 3,000Expected 21/12/2026	Cut Tape HK$30.09 HK$22.52 HK$20.63 HK$18.50 Reel HK$15.12 View HK$17.51 HK$17.26 HK$16.28 HK$14.96 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 LM2840XQMK/NOPB Texas Instruments 1: HK$30.66 359In 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	359In Stock	Cut Tape HK$30.66 HK$23.18 HK$21.29 HK$19.56 Reel HK$16.69 View HK$18.58 HK$18.00 HK$16.19 HK$15.95 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 SIMPLE SWITCHER® 42V 300mA Step-Dow A 926-LM2841YQMK/NOPB LM2841YQMKX/NOPB Texas Instruments 1: HK$39.05 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 HK$39.05 HK$29.43 HK$27.04 HK$24.41 View Reel HK$21.13 HK$23.10 HK$22.93 HK$21.54 HK$21.13 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: HK$35.76 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 HK$35.76 HK$26.96 HK$24.82 HK$22.36 Reel HK$19.73 View HK$21.21 HK$21.04 HK$19.32 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: HK$30.09 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	Cut Tape HK$30.09 HK$22.52 HK$20.63 HK$18.50 Reel HK$15.29 View HK$17.51 HK$17.26 HK$16.28 HK$15.21 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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