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.

Results: 7
Select Image Part #
 Mfr.
Description Datasheet Availability Pricing (JPY) 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
¥377
¥279
¥254.1
¥227.6
Reel
¥181
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
¥466.7
¥347.1
¥317.3
¥285.7
¥270.7
Reel
¥227.6
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
¥420.2
¥313.9
¥285.7
¥255.8
Reel
¥215.9
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
¥378.7
¥280.7
¥255.8
¥229.2
View
Reel
¥191
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
86In Stock
9,000On Order
Cut Tape
¥423.6
¥313.9
¥287.4
¥257.5
¥242.5
Reel
¥206
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
¥378.7
¥280.7
¥255.8
¥229.2
Reel
¥187.7
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
¥383.7
¥284
¥259.1
¥230.9
View
Reel
¥197.7
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