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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 (CLP) 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: $1.196 3.122In Stock 3.000Expected 3/22/2027 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	3.122In Stock 3.000Expected 3/22/2027	Cut Tape $1.196 $866 $782 $689 View Reel $602 $645 $619 $602 $602	Min.: 1 Mult.: 1 Max.: 1.001 : 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: $1.196 3.465In 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	3.465In Stock	Cut Tape $1.196 $866 $782 $703 View Reel $614 $657 $631 $614 $614 MouseReel Available	Min.: 1 Mult.: 1 Max.: 1.001 : 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: $1.401 5.020In 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	5.020In Stock	Cut Tape $1.401 $1.008 $913 $805 View Reel $725 $755 $725 $725 MouseReel Available	Min.: 1 Mult.: 1 Max.: 1.001 : 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: $1.196 2.397In 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	2.397In Stock	Cut Tape $1.196 $866 $782 $689 View Reel $602 $645 $619 $602 $602 MouseReel Available	Min.: 1 Mult.: 1 Max.: 1.001 : 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: $1.230 1.710In Stock 3.000Expected 2/4/2027 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	1.710In Stock 3.000Expected 2/4/2027	Cut Tape $1.230 $884 $797 $703 View Reel $614 $657 $631 $614 $614 MouseReel Available	Min.: 1 Mult.: 1 Max.: 1.001 : 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: $1.196 556In Stock 3.000Expected 2/11/2027 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	556In Stock 3.000Expected 2/11/2027	Cut Tape $1.196 $866 $782 $689 View Reel $602 $645 $619 $602 $602 MouseReel Available	Min.: 1 Mult.: 1 Max.: 1.001 : 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: $1.390 5.219In 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	5.219In Stock	Cut Tape $1.390 $1.006 $911 $805 View Reel $701 $755 $725 $701 $701 MouseReel Available	Min.: 1 Mult.: 1 Max.: 1.001 : 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