Voltage Regulators - Switching Regulators – Mouser Mexico

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LMR51603/LMR51603-Q1 Synchronous Buck Converters

Texas Instruments LMR51603/LMR51603-Q1 Synchronous Buck Converters drive up to 300mA of load current. The wide-V_IN, easy-to-use, synchronous buck converter is designed for various industrial applications for power conditioning from an unregulated source, with a 4V to 65V wide input range.

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Select	Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (USD) Filter the results in the table by unit price based on your quantity.	Qty.	RoHS	ECAD Model	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 4.5V-to-65V 0.3A syn chronous buck conve LMR51603XDBVR Texas Instruments 1: $1.37 2,918In Stock 3,000Expected 11/19/2026 New Product	Mfr. Part # LMR51603XDBVR Mouser Part # 595-LMR51603XDBVR New Product	Texas Instruments	Switching Voltage Regulators 4.5V-to-65V 0.3A syn chronous buck conve Learn More about Texas Instruments ti lmr51603 q1 converters	Datasheet	2,918In Stock 3,000Expected 11/19/2026	Cut Tape $1.37 $0.988 $0.892 $0.787 Reel $0.663 View $0.736 $0.706 $0.686 $0.647	Min.: 1 Mult.: 1 : 3,000			SMD/SMT	SOT-23-6	Buck	800 mV to 28 V	300 mA	1 Output	420 uA	400 kHz	- 40 C	+ 150 C	LMR51603	Reel, Cut Tape
	Switching Voltage Regulators 4.5V-to-65V 0.3A syn chronous buck conve LMR51603XFDBVR Texas Instruments 1: $1.37 3,479In Stock New Product	Mfr. Part # LMR51603XFDBVR Mouser Part # 595-LMR51603XFDBVR New Product	Texas Instruments	Switching Voltage Regulators 4.5V-to-65V 0.3A syn chronous buck conve Learn More about Texas Instruments ti lmr51603 q1 converters	Datasheet	3,479In Stock	Cut Tape $1.37 $0.988 $0.892 $0.802 Reel $0.649 View $0.75 $0.72 $0.701 $0.633 MouseReel Available	Min.: 1 Mult.: 1 : 3,000			SMD/SMT	SOT-23-6	Buck	800 mV to 28 V	300 mA	1 Output	420 uA	400 kHz	- 40 C	+ 150 C	LMR51603	Reel, Cut Tape, MouseReel
	Switching Voltage Regulators 4.5V-to-65V 0.3A syn chronous buck conve LMR51603XQDBVRQ1 Texas Instruments 1: $1.60 4,951In Stock New Product	Mfr. Part # LMR51603XQDBVRQ1 Mouser Part # 595-LMR51603XQDBVRQ1 New Product	Texas Instruments	Switching Voltage Regulators 4.5V-to-65V 0.3A syn chronous buck conve	Datasheet	4,951In Stock	Cut Tape $1.60 $1.15 $1.04 $0.919 Reel $0.826 View $0.862 $0.827 $0.777 MouseReel Available	Min.: 1 Mult.: 1 : 3,000			SMD/SMT	SOT-23-6	Buck	800 mV to 28 V	300 mA	1 Output	26.5 uA	400 kHz	- 40 C	+ 150 C	LMR51603	Reel, Cut Tape, MouseReel
	Switching Voltage Regulators 4.5V-to-65V 0.3A syn chronous buck conve LMR51603Y3DBVR Texas Instruments 1: $1.37 2,391In Stock New Product	Mfr. Part # LMR51603Y3DBVR Mouser Part # 595-LMR51603Y3DBVR New Product	Texas Instruments	Switching Voltage Regulators 4.5V-to-65V 0.3A syn chronous buck conve Learn More about Texas Instruments ti lmr51603 q1 converters	Datasheet	2,391In Stock	Cut Tape $1.37 $0.988 $0.892 $0.787 Reel $0.649 View $0.736 $0.706 $0.686 $0.633 MouseReel Available	Min.: 1 Mult.: 1 : 3,000			SMD/SMT	SOT-23-6	Buck	800 mV to 28 V	300 mA	1 Output	420 uA	1.1 MHz	- 40 C	+ 150 C	LMR51603	Reel, Cut Tape, MouseReel
	Switching Voltage Regulators 4.5V-to-65V 0.3A syn chronous buck conve LMR51603YDBVR Texas Instruments 1: $1.40 953In Stock 6,000On Order New Product	Mfr. Part # LMR51603YDBVR Mouser Part # 595-LMR51603YDBVR New Product	Texas Instruments	Switching Voltage Regulators 4.5V-to-65V 0.3A syn chronous buck conve Learn More about Texas Instruments ti lmr51603 q1 converters	Datasheet	953In Stock 6,000On Order On Order Ship Dates Mfr. #: LMR51603YDBVR Stock: 953 Can Ship Immediately On Order: 3,000 Expected 11/19/2026 3,000 Expected 4/1/2027 Factory Lead-Time: 20 Weeks	Cut Tape $1.40 $1.01 $0.91 $0.802 Reel $0.663 View $0.75 $0.72 $0.701 $0.633 MouseReel Available	Min.: 1 Mult.: 1 : 3,000			SMD/SMT	SOT-23-6	Buck	800 mV to 28 V	300 mA	1 Output	420 uA	1.1 MHz	- 40 C	+ 150 C	LMR51603	Reel, Cut Tape, MouseReel
	Switching Voltage Regulators 4.5V-to-65V 0.3A syn chronous buck conve LMR51603YFDBVR Texas Instruments 1: $1.37 520In Stock 3,000Expected 2/4/2027 New Product	Mfr. Part # LMR51603YFDBVR Mouser Part # 595-LMR51603YFDBVR New Product	Texas Instruments	Switching Voltage Regulators 4.5V-to-65V 0.3A syn chronous buck conve Learn More about Texas Instruments ti lmr51603 q1 converters	Datasheet	520In Stock 3,000Expected 2/4/2027	Cut Tape $1.37 $0.988 $0.892 $0.787 Reel $0.649 View $0.736 $0.706 $0.686 $0.633 MouseReel Available	Min.: 1 Mult.: 1 : 3,000			SMD/SMT	SOT-23-6	Buck	800 mV to 28 V	300 mA	1 Output	420 uA	1.1 MHz	- 40 C	+ 150 C	LMR51603	Reel, Cut Tape, MouseReel
	Switching Voltage Regulators 4.5V-to-65V 0.3A syn chronous buck conve LMR51603XFQDBVRQ1 Texas Instruments 1: $1.59 4,998In Stock	Mfr. Part # LMR51603XFQDBVRQ1 Mouser Part # 595-LMR51603XFQDBRQ1	Texas Instruments	Switching Voltage Regulators 4.5V-to-65V 0.3A syn chronous buck conve Learn More about Texas Instruments ti lmr51603 q1 converters	Datasheet	4,998In Stock	Cut Tape $1.59 $1.15 $1.04 $0.919 Reel $0.75 View $0.862 $0.827 $0.80 $0.735 MouseReel Available	Min.: 1 Mult.: 1 : 3,000			SMD/SMT	SOT-23-6	Buck	800 mV to 28 V	300 mA	1 Output	420 uA	400 kHz	- 40 C	+ 150 C	LMR51603	Reel, Cut Tape, MouseReel