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 (HKD) 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
HK$18.66
HK$13.81
HK$12.58
HK$11.26
Reel
HK$8.96
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
5,989In Stock
Cut Tape
HK$23.10
HK$17.18
HK$15.70
HK$14.14
HK$13.40
Reel
HK$11.26
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
2,860In Stock
Cut Tape
HK$23.76
HK$17.76
HK$16.19
HK$14.55
HK$13.81
Reel
HK$11.67
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 31/5/2027
Cut Tape
HK$18.74
HK$13.89
HK$12.66
HK$11.34
View
Reel
HK$9.45
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
HK$23.76
HK$17.76
HK$16.19
HK$14.55
View
Reel
HK$12.17
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
HK$18.74
HK$13.89
HK$12.66
HK$11.34
Reel
HK$9.29
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 2/11/2026
Cut Tape
HK$18.99
HK$14.06
HK$12.82
HK$11.43
HK$10.69
Reel
HK$10.60
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