Voltage Regulators - Switching Regulators

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LMR514x0/LMR514x0-Q1 Step-Down DC/DC Converters

Texas Instruments LMR514x0/LMR514x0-Q1 Synchronous Step-Down DC/DC Converters are wide-V_IN, easy-to-use synchronous buck converters capable of driving up to 4A or 5A load current. With a wide input range of 4V to 36V, the device is suitable for various industrial applications for power conditioning from an unregulated source. The LMR514x0/LMR514x0-Q1 features an adjustable switching frequency from 200kHz to 1.1MHz with an external resistor, providing the flexibility to optimize efficiency or external component size. The device has a PFM version to realize high efficiency at light load and an FPWM version to achieve constant frequency and small output voltage ripple over the full load range. Soft-start and compensation circuits are implemented internally, which allows the device to be used with minimum external components.

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (CRC) 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 36-V 4-A synchronou s buck converter 12- LMR51440SDRRR Texas Instruments 1: ₡1 181,46 6 230In Stock	Mfr. Part # LMR51440SDRRR Mouser Part # 595-LMR51440SDRRR	Texas Instruments	Switching Voltage Regulators 36-V 4-A synchronou s buck converter 12- Learn More about Texas Instruments ti lmr514x0 step down dc dc converters	Datasheet	6 230In Stock	Cut Tape ₡1 181,46 ₡874,38 ₡796,31 ₡713,04 Reel ₡567,31 View ₡671,40 ₡650,58 ₡619,35 ₡551,69 MouseReel Available	Min.: 1 Mult.: 1 : 3 000	SMD/SMT	WSON-12	Buck	28 V	4 A	1 Output	25 uA	1.1 MHz	- 40 C	+ 150 C	LMR51440	Reel, Cut Tape, MouseReel
Switching Voltage Regulators Automotive 36V 4A Sy nchronous buck con LMR51440SQDRRRQ1 Texas Instruments 1: ₡1 462,51 5 989In Stock	Mfr. Part # LMR51440SQDRRRQ1 Mouser Part # 595-LMR51440SQDRRRQ1	Texas Instruments	Switching Voltage Regulators Automotive 36V 4A Sy nchronous buck con Learn More about Texas Instruments ti lmr514x0 step down dc dc converters	Datasheet	5 989In Stock	Cut Tape ₡1 462,51 ₡1 087,77 ₡994,09 ₡895,20 ₡848,36 Reel ₡713,04	Min.: 1 Mult.: 1 : 3 000	SMD/SMT	WSON-12	Buck	800 mV to 28 V	4 A	1 Output	25 uA	200 kHz to 1 MHz	- 40 C	+ 125 C	LMR51440	Reel, Cut Tape
Switching Voltage Regulators Automotive 36V 6A Sy nchronous buck con LMR51450FSQDRRRQ1 Texas Instruments 1: ₡1 504,15 2 860In Stock	Mfr. Part # LMR51450FSQDRRRQ1 Mouser Part # 595-LMR51450FSQDRRQ1	Texas Instruments	Switching Voltage Regulators Automotive 36V 6A Sy nchronous buck con Learn More about Texas Instruments ti lmr514x0 step down dc dc converters	Datasheet	2 860In Stock	Cut Tape ₡1 504,15 ₡1 124,21 ₡1 025,32 ₡921,22 ₡874,38 Reel ₡739,06	Min.: 1 Mult.: 1 : 3 000	SMD/SMT	WSON-12	Buck	800 mV to 38 V	5 A	1 Output	25 uA	200 kHz to 1 MHz	- 40 C	+ 125 C	LMR51450	Reel, Cut Tape
Switching Voltage Regulators 36-V 5-A synchronou s buck converter 12- LMR51450FNDRRR Texas Instruments 1: ₡1 186,66 122In Stock 12 000Expected 5/31/2027	Mfr. Part # LMR51450FNDRRR Mouser Part # 595-LMR51450FNDRRR	Texas Instruments	Switching Voltage Regulators 36-V 5-A synchronou s buck converter 12- Learn More about Texas Instruments ti lmr514x0 step down dc dc converters	Datasheet	122In Stock 12 000Expected 5/31/2027	Cut Tape ₡1 186,66 ₡879,59 ₡801,52 ₡718,24 View Reel ₡598,54 ₡676,61 ₡655,79 ₡598,54 MouseReel Available	Min.: 1 Mult.: 1 : 3 000	SMD/SMT	WSON-12	Buck	28 V	5 A	1 Output	25 uA	1.1 MHz	- 40 C	+ 150 C	LMR51450	Reel, Cut Tape, MouseReel
Switching Voltage Regulators Automotive 36V 6A Sy nchronous buck con LMR51450SQDRRRQ1 Texas Instruments 1: ₡1 504,15 86In Stock 9 000On Order	Mfr. Part # LMR51450SQDRRRQ1 Mouser Part # 595-LMR51450SQDRRRQ1	Texas Instruments	Switching Voltage Regulators Automotive 36V 6A Sy nchronous buck con Learn More about Texas Instruments ti lmr514x0 step down dc dc converters	Datasheet	86In Stock 9 000On Order On Order Ship Dates Mfr. #: LMR51450SQDRRRQ1 Stock: 86 Can Ship Immediately On Order: 6 000 Expected 11/23/2026 3 000 Expected 12/21/2026 Factory Lead-Time: 26 Weeks	Cut Tape ₡1 504,15 ₡1 124,21 ₡1 025,32 ₡921,22 View Reel ₡770,29 ₡869,18 ₡848,36 ₡806,72 ₡770,29	Min.: 1 Mult.: 1 : 3 000	SMD/SMT	WSON-12	Buck	800 mV to 38 V	5 A	1 Output	25 uA	200 kHz to 1 MHz	- 40 C	+ 125 C	LMR51450	Reel, Cut Tape
Switching Voltage Regulators 36-V 5-A synchronou s buck converter 12- LMR51450SDRRR Texas Instruments 1: ₡1 186,66 38 950On Order	Mfr. Part # LMR51450SDRRR Mouser Part # 595-LMR51450SDRRR	Texas Instruments	Switching Voltage Regulators 36-V 5-A synchronou s buck converter 12- Learn More about Texas Instruments ti lmr514x0 step down dc dc converters	Datasheet	38 950On Order On Order Ship Dates Mfr. #: LMR51450SDRRR Stock: 0 On Order: 23 950 Expected 4/29/2027 15 000 Expected 5/20/2027 Factory Lead-Time: 26 Weeks	Cut Tape ₡1 186,66 ₡879,59 ₡801,52 ₡718,24 Reel ₡588,13 View ₡676,61 ₡655,79 ₡650,58 ₡577,72 MouseReel Available	Min.: 1 Mult.: 1 : 3 000	SMD/SMT	WSON-12	Buck	28 V	5 A	1 Output	25 uA	1.1 MHz	- 40 C	+ 150 C	LMR51450	Reel, Cut Tape, MouseReel
Switching Voltage Regulators Automotive 36V 4A Sy nchronous buck con LMR51440FSQDRRRQ1 Texas Instruments 1: ₡1 202,28 5 995Expected 11/2/2026	Mfr. Part # LMR51440FSQDRRRQ1 Mouser Part # 595-LMR51440FSQDRRQ1	Texas Instruments	Switching Voltage Regulators Automotive 36V 4A Sy nchronous buck con Learn More about Texas Instruments ti lmr514x0 step down dc dc converters	Datasheet	5 995Expected 11/2/2026	Cut Tape ₡1 202,28 ₡890,00 ₡811,93 ₡723,45 ₡676,61 Reel ₡671,40	Min.: 1 Mult.: 1 : 3 000	SMD/SMT	WSON-12	Buck	800 mV to 28 V	4 A	1 Output	25 uA	200 kHz to 1 MHz	- 40 C	+ 125 C	LMR51440	Reel, Cut Tape

LMR514x0/LMR514x0-Q1 Step-Down DC/DC Converters

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LMR514x0/LMR514x0-Q1 Step-Down DC/DC Converters

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