Voltage Regulators - Switching Regulators

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LM2676 SIMPLE SWITCHER® 3A Voltage Regulators

Texas Instruments LM2676 SIMPLE SWITCHER® High-Efficiency 3A Step-Down Voltage Regulators are monolithic integrated circuits designed to provide the active functions for a step-down (buck) switching regulator capable of driving up to 3A loads with excellent line and load regulation characteristics. High efficiency of >90% is achieved through the use of a low ON-resistance DMOS power switch. The series also features built-in thermal shutdown, current limiting, and an ON/OFF control input that can power down the regulator to a low 50μA quiescent current standby condition. The Texas Instruments LM2676 consists of fixed output voltages of 3.3V, 5V, and 12V and an adjustable output version. The output voltage is guaranteed to a ±2% tolerance. The clock frequency is controlled to within a ±11% tolerance.

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (CHF) 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 SIMPLE SWITCHER® 8V to 40V 3A Low C A 926-LM2676SDADJNOPB LM2676SDX-ADJ/NOPB Texas Instruments 1: CHF 4.83 4’631In Stock	Mfr. Part No. LM2676SDX-ADJ/NOPB Mouser Part No 926-LM2676SDXADJNOPB	Texas Instruments	Switching Voltage Regulators SIMPLE SWITCHER® 8V to 40V 3A Low C A 926-LM2676SDADJNOPB	Datasheet	4’631In Stock	Cut Tape CHF 4.83 CHF 3.68 CHF 3.39 CHF 3.08 View Reel CHF 2.69 CHF 2.92 CHF 2.84 CHF 2.79 CHF 2.69 MouseReel Available	Min.: 1 Mult.: 1 : 2’500	SMD/SMT	VSON-14	Buck	1.2 V to 37 V	3 A	1 Output		260 kHz	- 40 C	+ 125 C	LM2676	Reel, Cut Tape, MouseReel
Switching Voltage Regulators HIGH EFF 3A STEP- DO WN VLTG REG A 926-L A 926-LM2676SDX50NOPB LM2676SD-5.0/NOPB Texas Instruments 1: CHF 5.70 185In Stock	Mfr. Part No. LM2676SD-5.0/NOPB Mouser Part No 926-LM2676SD-5.0NOPB	Texas Instruments	Switching Voltage Regulators HIGH EFF 3A STEP- DO WN VLTG REG A 926-L A 926-LM2676SDX50NOPB	Datasheet	185In Stock	Cut Tape CHF 5.70 CHF 4.38 CHF 4.05 CHF 3.69 Reel CHF 3.53 View CHF 3.30 CHF 3.24 CHF 3.23 Quote MouseReel Available	Min.: 1 Mult.: 1 : 250	SMD/SMT	VSON-14	Buck	5 V	3 A	1 Output		260 kHz	- 40 C	+ 125 C	LM2676	Reel, Cut Tape, MouseReel
Switching Voltage Regulators Hi Eff 3A SD VTG Reg LM2676T-3.3/NOPB Texas Instruments 1: CHF 4.83 268In Stock	Mfr. Part No. LM2676T-3.3/NOPB Mouser Part No 926-LM2676T-33/NOPB	Texas Instruments	Switching Voltage Regulators Hi Eff 3A SD VTG Reg	Datasheet	268In Stock	CHF 4.83 CHF 3.68 CHF 3.32 CHF 3.07 View CHF 2.79 CHF 2.73 CHF 2.71 CHF 2.69 Quote	Min.: 1 Mult.: 1	Through Hole	TO-220-7	Buck	3.3 V	3 A	1 Output	4.2 mA	260 kHz	- 40 C	+ 125 C	LM2676	Tube
Switching Voltage Regulators HIGH EFF 3A STEP- DO WN VLTG REG A 926-L A 926-LM2676SX-ADJNOPB LM2676S-ADJ/NOPB Texas Instruments 1: CHF 5.85 6’311In Stock 11’925Expected 3/20/2028	Mfr. Part No. LM2676S-ADJ/NOPB Mouser Part No 926-LM2676S-ADJ/NOPB	Texas Instruments	Switching Voltage Regulators HIGH EFF 3A STEP- DO WN VLTG REG A 926-L A 926-LM2676SX-ADJNOPB	Datasheet	6’311In Stock 11’925Expected 3/20/2028	CHF 5.85 CHF 4.50 CHF 4.02 CHF 3.73 View CHF 3.58 CHF 3.51	Min.: 1 Mult.: 1	SMD/SMT	TO-263-7	Buck	1.2 V to 37 V	3 A	1 Output	4.2 mA	260 kHz	- 40 C	+ 125 C	LM2676	Tube
Switching Voltage Regulators HIGH EFF 3A STEP- DO WN VLTG REG A 926-L A 926-LM2676SX-12/NOPB LM2676S-12/NOPB Texas Instruments 1: CHF 5.66 603In Stock	Mfr. Part No. LM2676S-12/NOPB Mouser Part No 926-LM2676S-12/NOPB	Texas Instruments	Switching Voltage Regulators HIGH EFF 3A STEP- DO WN VLTG REG A 926-L A 926-LM2676SX-12/NOPB	Datasheet	603In Stock	CHF 5.66 CHF 4.34 CHF 3.93 CHF 3.65 View CHF 3.62 CHF 3.52 CHF 3.29 CHF 3.27	Min.: 1 Mult.: 1	SMD/SMT	TO-263-7	Buck	12 V	3 A	1 Output	4.2 mA	260 kHz	- 40 C	+ 125 C	LM2676	Tube
Switching Voltage Regulators HIGH EFF 3A STEP- DO WN VLTG REG A 926-L A 926-LM2676SX-5.0NOPB LM2676S-5.0/NOPB Texas Instruments 1: CHF 5.66 376In Stock 4’320Expected 1/14/2027	Mfr. Part No. LM2676S-5.0/NOPB Mouser Part No 926-LM2676S-5.0/NOPB	Texas Instruments	Switching Voltage Regulators HIGH EFF 3A STEP- DO WN VLTG REG A 926-L A 926-LM2676SX-5.0NOPB	Datasheet	376In Stock 4’320Expected 1/14/2027	CHF 5.66 CHF 4.34 CHF 3.88 CHF 3.60 View CHF 3.47 CHF 3.36 CHF 3.32 CHF 3.29	Min.: 1 Mult.: 1	SMD/SMT	TO-263-7	Buck	5 V	3 A	1 Output	4.2 mA	260 kHz	- 40 C	+ 125 C	LM2676	Tube
Switching Voltage Regulators Hi Eff 3A SD VTG Reg A 926-LM2676SDX33NO A 926-LM2676SDX33NOPB LM2676SD-3.3/NOPB Texas Instruments 1: CHF 5.66 606In Stock	Mfr. Part No. LM2676SD-3.3/NOPB Mouser Part No 926-LM2676SD33NOPB	Texas Instruments	Switching Voltage Regulators Hi Eff 3A SD VTG Reg A 926-LM2676SDX33NO A 926-LM2676SDX33NOPB	Datasheet	606In Stock	Cut Tape CHF 5.66 CHF 4.34 CHF 4.02 CHF 3.65 Reel CHF 3.43 View CHF 3.38 CHF 3.36 CHF 3.34 MouseReel Available	Min.: 1 Mult.: 1 : 250	SMD/SMT	VSON-14	Buck	3.3 V	3 A	1 Output	4.2 mA	260 kHz	- 40 C	+ 125 C	LM2676	Reel, Cut Tape, MouseReel
Switching Voltage Regulators SIMPLE SWITCHER® 8V to 40V 3A Low C A 926-LM2676SD-5.0NOPB LM2676SDX-5.0/NOPB Texas Instruments 1: CHF 4.82 3’765In Stock	Mfr. Part No. LM2676SDX-5.0/NOPB Mouser Part No 926-LM2676SDX50NOPB	Texas Instruments	Switching Voltage Regulators SIMPLE SWITCHER® 8V to 40V 3A Low C A 926-LM2676SD-5.0NOPB	Datasheet	3’765In Stock	Cut Tape CHF 4.82 CHF 3.67 CHF 3.38 CHF 3.07 View Reel CHF 2.75 CHF 2.91 CHF 2.83 CHF 2.79 CHF 2.75 MouseReel Available	Min.: 1 Mult.: 1 : 2’500	SMD/SMT	VSON-14	Buck	5 V	3 A	1 Output	4.2 mA	260 kHz	- 40 C	+ 125 C	LM2676	Reel, Cut Tape, MouseReel
Switching Voltage Regulators Hi Eff 3A SD VTG Reg A 926-LM2676S-12/NO A 926-LM2676S-12/NOPB LM2676SX-12/NOPB Texas Instruments 1: CHF 4.83 3’467In Stock	Mfr. Part No. LM2676SX-12/NOPB Mouser Part No 926-LM2676SX-12/NOPB	Texas Instruments	Switching Voltage Regulators Hi Eff 3A SD VTG Reg A 926-LM2676S-12/NO A 926-LM2676S-12/NOPB	Datasheet	3’467In Stock	Cut Tape CHF 4.83 CHF 3.68 CHF 3.39 CHF 3.20 Reel CHF 2.96 View CHF 3.08 CHF 2.85 CHF 2.80 MouseReel Available	Min.: 1 Mult.: 1 : 500	SMD/SMT	TO-263-7	Buck	12 V	3 A	1 Output	4.2 mA	260 kHz	- 40 C	+ 125 C	LM2676	Reel, Cut Tape, MouseReel
Switching Voltage Regulators HIGH EFF 3A STEP- DO WN VLTG REG A 926-L A 926-LM2676S-5.0/NOPB LM2676SX-5.0/NOPB Texas Instruments 1: CHF 5.16 2’967In Stock 5’000Expected 12/24/2026	Mfr. Part No. LM2676SX-5.0/NOPB Mouser Part No 926-LM2676SX-5.0NOPB	Texas Instruments	Switching Voltage Regulators HIGH EFF 3A STEP- DO WN VLTG REG A 926-L A 926-LM2676S-5.0/NOPB	Datasheet	2’967In Stock 5’000Expected 12/24/2026	Cut Tape CHF 5.16 CHF 3.96 CHF 3.65 CHF 3.19 CHF 3.04 Reel CHF 2.90 MouseReel Available	Min.: 1 Mult.: 1 : 500	SMD/SMT	TO-263-7	Buck	5 V	3 A	1 Output	4.2 mA	260 kHz	- 40 C	+ 125 C	LM2676	Reel, Cut Tape, MouseReel
Switching Voltage Regulators HIGH EFF 3A STEP- DO WN VLTG REG A 926-L A 926-LM2676S-ADJ/NOPB LM2676SX-ADJ/NOPB Texas Instruments 1: CHF 4.86 2’022In Stock 9’500Expected 4/9/2027	Mfr. Part No. LM2676SX-ADJ/NOPB Mouser Part No 926-LM2676SX-ADJNOPB	Texas Instruments	Switching Voltage Regulators HIGH EFF 3A STEP- DO WN VLTG REG A 926-L A 926-LM2676S-ADJ/NOPB	Datasheet	2’022In Stock 9’500Expected 4/9/2027	Cut Tape CHF 4.86 CHF 3.72 CHF 3.44 CHF 3.12 CHF 2.99 Reel CHF 2.86 MouseReel Available	Min.: 1 Mult.: 1 : 500	SMD/SMT	TO-263-7	Buck	1.2 V to 37 V	3 A	1 Output	4.2 mA	260 kHz	- 40 C	+ 125 C	LM2676	Reel, Cut Tape, MouseReel
Switching Voltage Regulators HIGH EFF 3A STEP- DO WN VLTG REG LM2676T-5.0/NOPB Texas Instruments 1: CHF 4.51 2’350In Stock	Mfr. Part No. LM2676T-5.0/NOPB Mouser Part No 926-LM2676T-5.0/NOPB	Texas Instruments	Switching Voltage Regulators HIGH EFF 3A STEP- DO WN VLTG REG	Datasheet	2’350In Stock	CHF 4.51 CHF 3.71 CHF 3.30 CHF 3.07 View CHF 3.03 CHF 2.95 CHF 2.88 CHF 2.70	Min.: 1 Mult.: 1	Through Hole	TO-220-7	Buck	5 V	3 A	1 Output	4.2 mA	260 kHz	- 40 C	+ 125 C	LM2676	Tube
Switching Voltage Regulators HIGH EFF 3A STEP- DO WN VLTG REG A 926-L A 926-LM2676SX-3.3NOPB LM2676S-3.3/NOPB Texas Instruments 1: CHF 5.70 44In Stock 1’170Expected 2/8/2027	Mfr. Part No. LM2676S-3.3/NOPB Mouser Part No 926-LM2676S-3.3/NOPB	Texas Instruments	Switching Voltage Regulators HIGH EFF 3A STEP- DO WN VLTG REG A 926-L A 926-LM2676SX-3.3NOPB	Datasheet	44In Stock 1’170Expected 2/8/2027	CHF 5.70 CHF 4.38 CHF 3.93 CHF 3.65 View CHF 3.50 CHF 3.43 CHF 3.32 Quote	Min.: 1 Mult.: 1	SMD/SMT	TO-263-7	Buck	3.3 V	3 A	1 Output	4.2 mA	260 kHz	- 40 C	+ 125 C	LM2676	Tube
Switching Voltage Regulators Hi Eff 3A SD VTG Reg LM2676SD-12/NOPB Texas Instruments 1: CHF 4.85 243In Stock	Mfr. Part No. LM2676SD-12/NOPB Mouser Part No 926-LM2676SD-12/NOPB	Texas Instruments	Switching Voltage Regulators Hi Eff 3A SD VTG Reg	Datasheet	243In Stock	Cut Tape CHF 4.85 CHF 3.71 CHF 3.43 CHF 3.10 Reel CHF 3.05 View CHF 2.84 CHF 2.77 CHF 2.73 MouseReel Available	Min.: 1 Mult.: 1 : 250	SMD/SMT	VSON-14	Buck	12 V	3 A	1 Output	4.2 mA	260 kHz	- 40 C	+ 125 C	LM2676	Reel, Cut Tape, MouseReel
Switching Voltage Regulators Hi Eff 3A SD VTG Reg A 926-LM2676SDXADJN A 926-LM2676SDXADJNOPB LM2676SD-ADJ/NOPB Texas Instruments 1: CHF 5.66 174In Stock	Mfr. Part No. LM2676SD-ADJ/NOPB Mouser Part No 926-LM2676SDADJNOPB	Texas Instruments	Switching Voltage Regulators Hi Eff 3A SD VTG Reg A 926-LM2676SDXADJN A 926-LM2676SDXADJNOPB	Datasheet	174In Stock	Cut Tape CHF 5.66 CHF 4.34 CHF 4.01 CHF 3.65 Reel CHF 3.47 View CHF 3.36 CHF 3.32 CHF 3.29 MouseReel Available	Min.: 1 Mult.: 1 : 250	SMD/SMT	VSON-14	Buck	1.2 V to 37 V	3 A	1 Output		260 kHz	- 40 C	+ 125 C	LM2676	Reel, Cut Tape, MouseReel
Switching Voltage Regulators Hi Eff 3A SD VTG Reg LM2676T-12/NOPB Texas Instruments 1: CHF 4.86 236In Stock	Mfr. Part No. LM2676T-12/NOPB Mouser Part No 926-LM2676T-12/NOPB	Texas Instruments	Switching Voltage Regulators Hi Eff 3A SD VTG Reg	Datasheet	236In Stock	CHF 4.86 CHF 3.71 CHF 3.30 CHF 3.07 View CHF 2.95 CHF 2.88 CHF 2.82 CHF 2.73	Min.: 1 Mult.: 1	Through Hole	TO-220-7	Buck	12 V	3 A	1 Output		260 kHz	- 40 C	+ 125 C	LM2676	Tube
Switching Voltage Regulators HIGH EFF 3A STEP- DO WN VLTG REG LM2676T-ADJ/NOPB Texas Instruments 1: CHF 4.97 41In Stock 945On Order	Mfr. Part No. LM2676T-ADJ/NOPB Mouser Part No 926-LM2676T-ADJ/NOPB	Texas Instruments	Switching Voltage Regulators HIGH EFF 3A STEP- DO WN VLTG REG	Datasheet	41In Stock 945On Order On Order Ship Dates Mfr. No: LM2676T-ADJ/NOPB Stock: 41 Can Dispatch Immediately On Order: 405 Expected 4/19/2027 540 Expected 5/3/2027 Factory Lead Time: 26 Weeks	CHF 4.97 CHF 3.81 CHF 3.39 CHF 3.08 View CHF 2.98 CHF 2.89	Min.: 1 Mult.: 1	Through Hole	TO-220-7	Buck	1.2 V to 37 V	3 A	1 Output	4.2 mA	260 kHz	- 40 C	+ 125 C	LM2676	Tube
Switching Voltage Regulators HIGH EFF 3A STEP- DO WN VLTG REG A 926-L A 926-LM2676S-3.3/NOPB LM2676SX-3.3/NOPB Texas Instruments 1: CHF 4.83 7’385On Order	Mfr. Part No. LM2676SX-3.3/NOPB Mouser Part No 926-LM2676SX-3.3NOPB	Texas Instruments	Switching Voltage Regulators HIGH EFF 3A STEP- DO WN VLTG REG A 926-L A 926-LM2676S-3.3/NOPB Learn More about Texas Instruments ti lm2676 simple switcher	Datasheet	7’385On Order On Order Ship Dates Mfr. No: LM2676SX-3.3/NOPB Stock: 0 On Order: 1’885 Expected 11/26/2026 1’500 Expected 1/21/2027 4’000 Expected 5/24/2027 Factory Lead Time: 26 Weeks	Cut Tape CHF 4.83 CHF 3.68 CHF 3.39 CHF 3.08 CHF 2.92 Reel CHF 2.84 MouseReel Available	Min.: 1 Mult.: 1 : 500	SMD/SMT	TO-263-7	Buck	3.3 V	3 A	1 Output	4.2 mA	260 kHz	- 40 C	+ 125 C	LM2676	Reel, Cut Tape, MouseReel
Switching Voltage Regulators SIMPLE SWITCHER® 8V to 40V 3A Low C A 926-LM2676SD33NOPB LM2676SDX-3.3/NOPB Texas Instruments 2’500: CHF 3.04 Non-Stocked Lead-Time 26 Weeks	Mfr. Part No. LM2676SDX-3.3/NOPB Mouser Part No 926-LM2676SDX33NOPB	Texas Instruments	Switching Voltage Regulators SIMPLE SWITCHER® 8V to 40V 3A Low C A 926-LM2676SD33NOPB	Datasheet	Non-Stocked Lead-Time 26 Weeks	Reel CHF 3.04	Min.: 2’500 Mult.: 2’500 : 2’500	SMD/SMT	VSON-14	Buck	3.3 V	3 A	1 Output		260 kHz	- 40 C	+ 125 C	LM2676	Reel

LM2676 SIMPLE SWITCHER® 3A Voltage Regulators

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