Voltage Regulators - Switching Regulators

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LM257x SIMPLE SWITCHER® Voltage Regulators

Texas Instruments LM257x SIMPLE SWITCHER^® Step-Down Voltage Regulators are high-efficiency devices ranging from 0.5A to 3A output current. TI LM2574 and LM2574HV SIMPLE SWITCHER Step-Down Voltage Regulators provide all the active functions for a step-down (buck) switching regulator capable of driving a 0.5A load with excellent line and load regulation. The LM2575 and LM2575HV step-down voltage regulators provide all the active functions for a step-down (buck) switching regulator capable of driving a 1A load with excellent line and load regulation.

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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	Quiescent Current	Switching Frequency	Minimum Operating Temperature	Maximum Operating Temperature	Series	Packaging
Switching Voltage Regulators 0.5A STEP-DOWN VLTG REG A 926-LM2574HVMX A 926-LM2574HVMXADJNPB LM2574HVM-ADJ/NOPB Texas Instruments 1: HK$54.58 19,943In Stock	Mfr. Part No. LM2574HVM-ADJ/NOPB Mouser Part No 926-LM2574HVMADJNOPB	Texas Instruments	Switching Voltage Regulators 0.5A STEP-DOWN VLTG REG A 926-LM2574HVMX A 926-LM2574HVMXADJNPB Learn More about Texas Instruments ti lm2574x voltage regulators	Datasheet	19,943In Stock	HK$54.58 HK$41.84 HK$37.57 HK$35.10 View HK$31.89 HK$31.24 HK$30.91 HK$30.09 Quote	Min.: 1 Mult.: 1	SMD/SMT	SOIC-Wide-14	Buck	1.23 V to 57 V	500 mA	1 Output	5 mA	58 kHz	- 40 C	+ 125 C	LM2574HV	Tube
Switching Voltage Regulators 3A STEP-DOWN VLTG RE G A 926-LM2576HVSX1 A 926-LM2576HVSX12NOPB LM2576HVS-12/NOPB Texas Instruments 1: HK$77.10 6,895In Stock	Mfr. Part No. LM2576HVS-12/NOPB Mouser Part No 926-LM2576HVS-12NOPB	Texas Instruments	Switching Voltage Regulators 3A STEP-DOWN VLTG RE G A 926-LM2576HVSX1 A 926-LM2576HVSX12NOPB Learn More about Texas Instruments ti lm2576x voltage regulators	Datasheet	6,895In Stock	HK$77.10 HK$60.91 HK$54.33 HK$46.44 View HK$43.40 HK$43.16 HK$42.83 Quote	Min.: 1 Mult.: 1	SMD/SMT	TO-263-5	Buck	12 V	3 A	1 Output	5 mA	52 kHz	- 40 C	+ 125 C	LM2576HV	Tube
Switching Voltage Regulators 0.5A STEP-DOWN VLTG REG LM2574HVN-5.0/NOPB Texas Instruments 1: HK$70.03 5,242In Stock	Mfr. Part No. LM2574HVN-5.0/NOPB Mouser Part No 926-LM2574HVN5.0NOPB	Texas Instruments	Switching Voltage Regulators 0.5A STEP-DOWN VLTG REG Learn More about Texas Instruments ti lm2574x voltage regulators	Datasheet	5,242In Stock	HK$70.03 HK$54.33 HK$48.74 HK$45.54 View HK$43.73 HK$43.57 HK$42.58	Min.: 1 Mult.: 1	Through Hole	PDIP-8	Buck	5 V	500 mA	1 Output	5 mA	58 kHz	- 40 C	+ 125 C	LM2574HV	Tube
Switching Voltage Regulators 0.5A SD VTG Reg A 92 6-LM2574HVM15NOPB A A 926-LM2574HVM15NOPB LM2574HVMX-15/NOPB Texas Instruments 1: HK$46.44 544In Stock	Mfr. Part No. LM2574HVMX-15/NOPB Mouser Part No 926-LM2574HVMX15NOPB	Texas Instruments	Switching Voltage Regulators 0.5A SD VTG Reg A 92 6-LM2574HVM15NOPB A A 926-LM2574HVM15NOPB Learn More about Texas Instruments ti lm2574x voltage regulators	Datasheet	544In Stock	Cut Tape HK$46.44 HK$35.43 HK$32.63 HK$29.59 Reel HK$26.47 View HK$28.11 HK$27.29 HK$26.06 Quote MouseReel Available	Min.: 1 Mult.: 1 : 1,000	SMD/SMT	SOIC-Wide-14	Buck, Inverting	15 V	500 mA	1 Output		58 kHz	- 40 C	+ 125 C	LM2574HV	Reel, Cut Tape, MouseReel
Switching Voltage Regulators 0.5A SD VTG Reg A 92 6-LM2574HVM12NOPB A A 926-LM2574HVM12NOPB LM2574HVMX-12/NOPB Texas Instruments 1: HK$46.44 2,767In Stock	Mfr. Part No. LM2574HVMX-12/NOPB Mouser Part No 926-LM2574HVMX12NOPB	Texas Instruments	Switching Voltage Regulators 0.5A SD VTG Reg A 92 6-LM2574HVM12NOPB A A 926-LM2574HVM12NOPB Learn More about Texas Instruments ti lm2574x voltage regulators	Datasheet	2,767In Stock	Cut Tape HK$46.44 HK$35.43 HK$32.63 HK$29.59 Reel HK$25.81 View HK$28.11 HK$27.29 HK$25.65 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	SMD/SMT	SOIC-Wide-14	Buck	12 V	500 mA	1 Output	5 mA	58 kHz	- 40 C	+ 125 C	LM2574HV	Reel, Cut Tape, MouseReel
Switching Voltage Regulators SIMPLE SWITCHER 1A S tep-Down Voltage Re A 926-LM2575M-ADJ/NOPB LM2575MX-ADJ/NOPB Texas Instruments 1: HK$25.40 949In Stock	Mfr. Part No. LM2575MX-ADJ/NOPB Mouser Part No 926-LM2575MXADJNOPB	Texas Instruments	Switching Voltage Regulators SIMPLE SWITCHER 1A S tep-Down Voltage Re A 926-LM2575M-ADJ/NOPB Learn More about Texas Instruments ti lm2575x voltage regulators	Datasheet	949In Stock	Cut Tape HK$25.40 HK$19.07 HK$17.43 HK$15.70 Reel HK$13.40 View HK$14.88 HK$14.63 HK$12.99 HK$12.91 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	SMD/SMT	SOIC-24	Buck	1.23 V to 37 V	1 A	1 Output	10 mA	58 kHz	- 40 C	+ 125 C	LM2575	Reel, Cut Tape, MouseReel
Switching Voltage Regulators SIMPLE SWITCHER 1A S tep-Down Voltage Re LM2575T-15/LF03 Texas Instruments 1: HK$33.70 650In Stock	Mfr. Part No. LM2575T-15/LF03 Mouser Part No 926-LM2575T-15/LF03	Texas Instruments	Switching Voltage Regulators SIMPLE SWITCHER 1A S tep-Down Voltage Re Learn More about Texas Instruments ti lm2575x voltage regulators	Datasheet	650In Stock	HK$33.70 HK$25.48 HK$22.36 HK$20.71 HK$18.33	Min.: 1 Mult.: 1	Through Hole	TO-220-5	Buck	15 V	1 A	1 Output		52 kHz	- 40 C	+ 125 C	LM2575	Tube
Switching Voltage Regulators 1A STEP-DOWN VLTG RE G A 926-LM2575HVSX3 A 926-LM2575HVSX33NOPB LM2575HVS-3.3/NOPB Texas Instruments 1: HK$52.20 268In Stock	Mfr. Part No. LM2575HVS-3.3/NOPB Mouser Part No 926-LM2575HVS3.3NOPB	Texas Instruments	Switching Voltage Regulators 1A STEP-DOWN VLTG RE G A 926-LM2575HVSX3 A 926-LM2575HVSX33NOPB Learn More about Texas Instruments ti lm2575x voltage regulators	Datasheet	268In Stock	HK$52.20 HK$39.21 HK$36.25 HK$31.32	Min.: 1 Mult.: 1	SMD/SMT	TO-263-5	Buck	3.3 V	1 A	1 Output	10 mA	58 kHz	- 40 C	+ 125 C	LM2575HV	Tube
Switching Voltage Regulators 3A SD Vtg Reg LM2576T-3.3/NOPB Texas Instruments 1: HK$30.00 366In Stock	Mfr. Part No. LM2576T-3.3/NOPB Mouser Part No 926-LM2576T-33/NOPB	Texas Instruments	Switching Voltage Regulators 3A SD Vtg Reg Learn More about Texas Instruments ti lm2576x voltage regulators	Datasheet	366In Stock	HK$30.00 HK$22.61 HK$18.66 HK$17.67 View HK$17.02 HK$16.93 HK$16.11 HK$15.78	Min.: 1 Mult.: 1	Through Hole	TO-220-5	Buck	3.3 V	3 A	1 Output	5 mA	52 kHz	- 40 C	+ 125 C	LM2576	Tube
Switching Voltage Regulators 1A SD Vtg Reg LM2575HVS-12/NOPB Texas Instruments 1: HK$42.66 3,477In Stock	Mfr. Part No. LM2575HVS-12/NOPB Mouser Part No 926-LM2575HVS12NOPB	Texas Instruments	Switching Voltage Regulators 1A SD Vtg Reg Learn More about Texas Instruments ti lm2575x voltage regulators	Datasheet	3,477In Stock	HK$42.66 HK$32.30 HK$29.02 HK$26.55 View HK$25.40 HK$24.91 HK$24.41	Min.: 1 Mult.: 1	SMD/SMT	TO-263-5	Buck	12 V	1 A	1 Output	10 mA	58 kHz	- 40 C	+ 125 C	LM2575HV	Tube
Switching Voltage Regulators 0.5A STEP-DOWN VLTG REG A 926-LM2574HVMX A 926-LM2574HVMX50NOPB LM2574HVM-5.0/NOPB Texas Instruments 1: HK$54.58 2,644In Stock	Mfr. Part No. LM2574HVM-5.0/NOPB Mouser Part No 926-LM2574HVM5.0NOPB	Texas Instruments	Switching Voltage Regulators 0.5A STEP-DOWN VLTG REG A 926-LM2574HVMX A 926-LM2574HVMX50NOPB Learn More about Texas Instruments ti lm2574x voltage regulators	Datasheet	2,644In Stock	HK$54.58 HK$43.40 HK$36.74 HK$35.10 View HK$33.46 HK$32.39 HK$32.06 HK$31.65	Min.: 1 Mult.: 1	SMD/SMT	SOIC-Wide-14	Buck	5 V	500 mA	1 Output	5 mA	58 kHz	- 40 C	+ 125 C	LM2574HV	Tube
Switching Voltage Regulators 0.5A SD VTG Reg A 92 6-LM2574HVM5.0NOPB A 926-LM2574HVM5.0NOPB LM2574HVMX-5.0/NOPB Texas Instruments 1: HK$46.36 854In Stock 4,000Expected 21/12/2026	Mfr. Part No. LM2574HVMX-5.0/NOPB Mouser Part No 926-LM2574HVMX50NOPB	Texas Instruments	Switching Voltage Regulators 0.5A SD VTG Reg A 92 6-LM2574HVM5.0NOPB A 926-LM2574HVM5.0NOPB Learn More about Texas Instruments ti lm2574x voltage regulators	Datasheet	854In Stock 4,000Expected 21/12/2026	Cut Tape HK$46.36 HK$35.35 HK$32.55 HK$29.51 Reel HK$26.80 View HK$28.03 HK$27.21 HK$26.55 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	SMD/SMT	SOIC-Wide-14	Buck	5 V	500 mA	1 Output	5 mA	58 kHz	- 40 C	+ 125 C	LM2574HV	Reel, Cut Tape, MouseReel
Switching Voltage Regulators 0.5A SD VTG Reg A 92 6-LM2574HVMADJNOPB A 926-LM2574HVMADJNOPB LM2574HVMX-ADJ/NOPB Texas Instruments 1: HK$46.77 3,909In Stock	Mfr. Part No. LM2574HVMX-ADJ/NOPB Mouser Part No 926-LM2574HVMXADJNPB	Texas Instruments	Switching Voltage Regulators 0.5A SD VTG Reg A 92 6-LM2574HVMADJNOPB A 926-LM2574HVMADJNOPB Learn More about Texas Instruments ti lm2574x voltage regulators	Datasheet	3,909In Stock	Cut Tape HK$46.77 HK$35.76 HK$32.96 HK$30.09 View Reel HK$26.80 HK$29.10 HK$26.80 Quote MouseReel Available	Min.: 1 Mult.: 1 : 1,000	SMD/SMT	SOIC-Wide-14	Buck	1.23 V to 57 V	500 mA	1 Output	5 mA	58 kHz	- 40 C	+ 125 C	LM2574HV	Reel, Cut Tape, MouseReel
Switching Voltage Regulators 0.5A STEP-DOWN VLTG REG A 926-LM2574MX33 A 926-LM2574MX33NOPB LM2574M-3.3/NOPB Texas Instruments 1: HK$28.85 2,780In Stock	Mfr. Part No. LM2574M-3.3/NOPB Mouser Part No 926-LM2574M-3.3/NOPB	Texas Instruments	Switching Voltage Regulators 0.5A STEP-DOWN VLTG REG A 926-LM2574MX33 A 926-LM2574MX33NOPB Learn More about Texas Instruments ti lm2574x voltage regulators	Datasheet	2,780In Stock	HK$28.85 HK$21.70 HK$16.93 HK$15.95 View HK$15.29 HK$15.04 HK$14.55	Min.: 1 Mult.: 1	SMD/SMT	SOIC-Wide-14	Buck	3.3 V	500 mA	1 Output	5 mA	58 kHz	- 40 C	+ 125 C	LM2574	Tube
Switching Voltage Regulators 0.5A SD Vtg Reg A 92 6-LM2574MX-ADJNOPB A 926-LM2574MX-ADJNOPB LM2574M-ADJ/NOPB Texas Instruments 1: HK$29.76 728In Stock 10,100Expected 7/6/2027	Mfr. Part No. LM2574M-ADJ/NOPB Mouser Part No 926-LM2574M-ADJ/NOPB	Texas Instruments	Switching Voltage Regulators 0.5A SD Vtg Reg A 92 6-LM2574MX-ADJNOPB A 926-LM2574MX-ADJNOPB Learn More about Texas Instruments ti lm2574x voltage regulators	Datasheet	728In Stock 10,100Expected 7/6/2027	HK$29.76 HK$22.19 HK$20.22 HK$18.33 View HK$17.34 HK$16.77 HK$16.28 HK$15.21 HK$14.88	Min.: 1 Mult.: 1	SMD/SMT	SOIC-Wide-14	Buck	1.23 V to 37 V	500 mA	1 Output	5 mA	58 kHz	- 40 C	+ 125 C	LM2574	Tube
Switching Voltage Regulators 0.5A SD VTG Reg A 92 6-LM2574M-12/NOPB A A 926-LM2574M-12/NOPB LM2574MX-12/NOPB Texas Instruments 1: HK$24.66 1,842In Stock	Mfr. Part No. LM2574MX-12/NOPB Mouser Part No 926-LM2574MX-12/NOPB	Texas Instruments	Switching Voltage Regulators 0.5A SD VTG Reg A 92 6-LM2574M-12/NOPB A A 926-LM2574M-12/NOPB Learn More about Texas Instruments ti lm2574x voltage regulators	Datasheet	1,842In Stock	Cut Tape HK$24.66 HK$18.41 HK$16.93 HK$15.21 View Reel HK$12.74 HK$14.39 HK$14.14 HK$12.74 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	SMD/SMT	SOIC-Wide-14	Buck	12 V	500 mA	1 Output	5 mA	58 kHz	- 40 C	+ 125 C	LM2574	Reel, Cut Tape, MouseReel
Switching Voltage Regulators 0.5A STEP-DOWN VLTG REG A 926-LM2574M-5. A 926-LM2574M-5.0/NOPB LM2574MX-5.0/NOPB Texas Instruments 1: HK$23.67 2,053In Stock 6,000Expected 21/12/2026	Mfr. Part No. LM2574MX-5.0/NOPB Mouser Part No 926-LM2574MX-5.0NOPB	Texas Instruments	Switching Voltage Regulators 0.5A STEP-DOWN VLTG REG A 926-LM2574M-5. A 926-LM2574M-5.0/NOPB Learn More about Texas Instruments ti lm2574x voltage regulators	Datasheet	2,053In Stock 6,000Expected 21/12/2026	Cut Tape HK$23.67 HK$18.00 HK$16.52 HK$14.71 Reel HK$13.32 View HK$14.39 HK$14.14 HK$12.91 HK$12.66 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	SMD/SMT	SOIC-Wide-14	Buck	5 V	500 mA	1 Output	5 mA	58 kHz	- 40 C	+ 125 C	LM2574	Reel, Cut Tape, MouseReel
Switching Voltage Regulators 0.5A SD Vtg Reg LM2574N-12/NOPB Texas Instruments 1: HK$33.37 849In Stock	Mfr. Part No. LM2574N-12/NOPB Mouser Part No 926-LM2574N-12/NOPB	Texas Instruments	Switching Voltage Regulators 0.5A SD Vtg Reg Learn More about Texas Instruments ti lm2574x voltage regulators	Datasheet	849In Stock	HK$33.37 HK$25.24 HK$22.36 HK$20.63 View HK$19.73 HK$19.15 HK$18.08 HK$18.00	Min.: 1 Mult.: 1	Through Hole	PDIP-8	Buck	12 V	500 mA	1 Output	5 mA	58 kHz	- 40 C	+ 125 C	LM2574	Tube
Switching Voltage Regulators 0.5A SD Vtg Reg LM2574N-3.3/NOPB Texas Instruments 1: HK$33.37 880In Stock	Mfr. Part No. LM2574N-3.3/NOPB Mouser Part No 926-LM2574N-33/NOPB	Texas Instruments	Switching Voltage Regulators 0.5A SD Vtg Reg Learn More about Texas Instruments ti lm2574x voltage regulators	Datasheet	880In Stock	HK$33.37 HK$25.24 HK$22.36 HK$20.63 View HK$19.40 HK$18.99 HK$18.25 HK$17.84	Min.: 1 Mult.: 1	Through Hole	PDIP-8	Buck	3.3 V	500 mA	1 Output	5 mA	58 kHz	- 40 C	+ 125 C	LM2574	Tube
Switching Voltage Regulators 1A STEP-DOWN VLTG RE G A 926-LM2575HVSX5 A 926-LM2575HVSX50NOPB LM2575HVS-5.0/NOPB Texas Instruments 1: HK$52.44 1,939In Stock	Mfr. Part No. LM2575HVS-5.0/NOPB Mouser Part No 926-LM2575HVS5.0NOPB	Texas Instruments	Switching Voltage Regulators 1A STEP-DOWN VLTG RE G A 926-LM2575HVSX5 A 926-LM2575HVSX50NOPB Learn More about Texas Instruments ti lm2575x voltage regulators	Datasheet	1,939In Stock	HK$52.44 HK$40.28 HK$35.67 HK$33.29 HK$32.22	Min.: 1 Mult.: 1	SMD/SMT	TO-263-5	Buck	5 V	1 A	1 Output	10 mA	58 kHz	- 40 C	+ 125 C	LM2575HV	Tube
Switching Voltage Regulators SIMPLE SWITCHER 1A S tep-Down Voltage Re A 926-LM2575HVS15NOPB LM2575HVSX-15/NOPB Texas Instruments 1: HK$40.85 551In Stock	Mfr. Part No. LM2575HVSX-15/NOPB Mouser Part No 926-LM2575HVSX15NOPB	Texas Instruments	Switching Voltage Regulators SIMPLE SWITCHER 1A S tep-Down Voltage Re A 926-LM2575HVS15NOPB Learn More about Texas Instruments ti lm2575x voltage regulators	Datasheet	551In Stock	Cut Tape HK$40.85 HK$31.07 HK$28.69 HK$25.98 Reel HK$23.84 View HK$24.74 HK$22.69 HK$22.19 MouseReel Available	Min.: 1 Mult.: 1 : 500	SMD/SMT	TO-263-5	Buck	15 V	1 A	1 Output	10 mA	58 kHz	- 40 C	+ 125 C	LM2575HV	Reel, Cut Tape, MouseReel
Switching Voltage Regulators 1A STEP-DOWN VLTG RE G LM2575HVT-12/NOPB Texas Instruments 1: HK$46.61 1,551In Stock	Mfr. Part No. LM2575HVT-12/NOPB Mouser Part No 926-LM2575HVT-12NOPB	Texas Instruments	Switching Voltage Regulators 1A STEP-DOWN VLTG RE G Learn More about Texas Instruments ti lm2575x voltage regulators	Datasheet	1,551In Stock	HK$46.61 HK$35.59 HK$31.81 HK$29.43 View HK$28.19 HK$27.62 HK$27.04 HK$26.30	Min.: 1 Mult.: 1	Through Hole	TO-220-5	Buck	12 V	1 A	1 Output	10 mA	58 kHz	- 40 C	+ 125 C	LM2575HV	Tube
Switching Voltage Regulators 1A STEP-DOWN VLTG RE G LM2575HVT-5.0/NOPB Texas Instruments 1: HK$47.92 1,764In Stock	Mfr. Part No. LM2575HVT-5.0/NOPB Mouser Part No 926-LM2575HVT5.0NOPB	Texas Instruments	Switching Voltage Regulators 1A STEP-DOWN VLTG RE G Learn More about Texas Instruments ti lm2575x voltage regulators	Datasheet	1,764In Stock	HK$47.92 HK$36.58 HK$33.04 HK$30.25 View HK$29.02 HK$28.11 HK$27.62 HK$27.13 Quote	Min.: 1 Mult.: 1	Through Hole	TO-220-5	Buck	5 V	1 A	1 Output	10 mA	58 kHz	- 40 C	+ 125 C	LM2575HV	Tube
Switching Voltage Regulators 1A SD VTG Reg LM2575HVT-5.0/LF03 Texas Instruments 1: HK$49.90 1,384In Stock	Mfr. Part No. LM2575HVT-5.0/LF03 Mouser Part No 926-LM2575HVT50LF03	Texas Instruments	Switching Voltage Regulators 1A SD VTG Reg Learn More about Texas Instruments ti lm2575x voltage regulators	Datasheet	1,384In Stock	HK$49.90 HK$38.22 HK$35.35 HK$32.06 View HK$29.51 HK$28.77 HK$28.52 HK$28.28 Quote	Min.: 1 Mult.: 1	Through Hole	TO-220-5	Buck	5 V	1 A	1 Output	10 mA	58 kHz	- 40 C	+ 125 C	LM2575HV	Tube
Switching Voltage Regulators 1A SD VTG Reg LM2575HVT-ADJ/LF03 Texas Instruments 1: HK$50.55 1,714In Stock	Mfr. Part No. LM2575HVT-ADJ/LF03 Mouser Part No 926-LM2575HVTADJLF03	Texas Instruments	Switching Voltage Regulators 1A SD VTG Reg Learn More about Texas Instruments ti lm2575x voltage regulators	Datasheet	1,714In Stock	HK$50.55 HK$38.72 HK$34.85 HK$32.22 View HK$30.99 HK$30.33 HK$28.85	Min.: 1 Mult.: 1	Through Hole	TO-220-5	Buck	1.23 V to 57 V	1 A	1 Output	10 mA	52 kHz	- 40 C	+ 125 C	LM2575HV	Tube

LM257x SIMPLE SWITCHER® Voltage Regulators

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