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 (EUR) Filter the results in the table by unit price based on your quantity.
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Output Current
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Texas Instruments Switching Voltage Regulators Automotive 36V 4A Sy nchronous buck con
Datasheet
6 023In Stock
Min.: 1
Mult.: 1
Max.: 1 001
: 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 36-V 5-A synchronou s buck converter 12-
Datasheet
6 183In Stock
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
3 304In Stock
Min.: 1
Mult.: 1
Max.: 1 001
: 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 Automotive 36V 6A Sy nchronous buck con
Datasheet
1 237In Stock
2 700Expected 9/29/2026
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 Automotive 36V 4A Sy nchronous buck con
Datasheet
128In Stock
9 000On Order
Min.: 1
Mult.: 1
Max.: 1 001
: 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 36-V 4-A synchronou s buck converter 12-
Datasheet
35In Stock
6 000Expected 10/5/2026
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 36-V 5-A synchronou s buck converter 12-
Datasheet
22 461Expected 10/12/2026
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