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

Texas Instruments LMR514x0/LMR514x0-Q1 Synchronous Step-Down DC/DC Converters are wide-VIN, 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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Description Datasheet Availability Pricing (KRW) 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
Texas Instruments Switching Voltage Regulators 36-V 4-A synchronou s buck converter 12-
Datasheet
6,230In Stock
Cut Tape
₩3,198.9
₩2,367.5
₩2,156.1
₩1,930.6
Reel
₩1,536
View
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
Texas Instruments Switching Voltage Regulators Automotive 36V 4A Sy nchronous buck con
Datasheet
5,999In Stock
Cut Tape
₩3,959.9
₩2,945.2
₩2,691.6
₩2,423.8
₩2,297
Reel
₩1,930.6
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
Texas Instruments Switching Voltage Regulators Automotive 36V 6A Sy nchronous buck con
Datasheet
3,157In Stock
Cut Tape
₩3,565.3
₩2,663.4
₩2,423.8
₩2,170.2
Reel
₩1,832
View
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
Texas Instruments Switching Voltage Regulators 36-V 5-A synchronou s buck converter 12-
Datasheet
122In Stock
12,000Expected 5/31/2027
Cut Tape
₩3,213
₩2,381.5
₩2,170.2
₩1,944.7
View
Reel
₩1,620.6
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
Texas Instruments Switching Voltage Regulators Automotive 36V 6A Sy nchronous buck con
Datasheet
122In Stock
9,000On Order
Cut Tape
₩3,593.5
₩2,663.4
₩2,437.9
₩2,184.3
₩2,057.4
Reel
₩1,747.4
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
Texas Instruments Switching Voltage Regulators 36-V 5-A synchronou s buck converter 12-
Datasheet
38,950On Order
Cut Tape
₩3,213
₩2,381.5
₩2,170.2
₩1,944.7
Reel
₩1,592.4
View
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
Texas Instruments Switching Voltage Regulators Automotive 36V 4A Sy nchronous buck con
Datasheet
5,995Expected 11/2/2026
Cut Tape
₩3,255.3
₩2,409.7
₩2,198.4
₩1,958.8
View
Reel
₩1,676.9
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