Voltage Regulators - Switching Regulators

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LMR60440/-Q1 Synchronous Buck Converters

Texas Instruments LMR60440/-Q1 Synchronous Buck Converter is a highly efficient 3V to 36V, 4A, ultra-low I_Q converter that enables high power density and low EMI. This offers a 1V to 20V output voltage range, including a resistor divider between the output voltage node, feedback, and ground. The LMR60440 converter features a power-good output for power sequencing and a MODE/SYNC pin to select between modes of operation. The current-mode control architecture with 30ns minimum on-time allows high-conversion ratios at high frequencies, easy loop compensation, fast transient response, and excellent load and line regulation. The LMR60440 offers variants with spread spectrum in an ultra-compact 2.5mm x 2mm HotRod QFN-9 package. Typical applications include factory automation and control, appliances, and building automation.

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (PEN) 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 Simple Switcher 3.1- V to 36-V 4.0-A hig LMR604403SRAKR Texas Instruments 1: S/8.17 6,525In Stock 3,000Expected 10/12/2026 New Product	Mfr. Part # LMR604403SRAKR Mouser Part # 595-LMR604403SRAKR New Product	Texas Instruments	Switching Voltage Regulators Simple Switcher 3.1- V to 36-V 4.0-A hig Learn More about Texas Instruments ti lmr60440 converter	Datasheet	6,525In Stock 3,000Expected 10/12/2026	Cut Tape S/8.17 S/6.03 S/5.49 S/4.90 View Reel S/4.24 S/4.59 S/4.44 S/4.24 S/4.24	Min.: 1 Mult.: 1 Max.: 1,001 : 3,000	SMD/SMT	WQFN-9	Buck	3.3 V	4 A	1 Output	3.8 uA	200 kHz to 2.2 MHz	- 40 C	+ 125 C	LMR60440	Reel, Cut Tape
Switching Voltage Regulators Automotive, 36V, 4A synchronous buck converter with low IQ and high efficiency with minimized COUT LMR604403SBRAKRQ1 Texas Instruments 1: S/9.73 1,000Expected 10/21/2026 New Product	Mfr. Part # LMR604403SBRAKRQ1 Mouser Part # 595-MR604403SBRAKRQ1 New Product	Texas Instruments	Switching Voltage Regulators Automotive, 36V, 4A synchronous buck converter with low IQ and high efficiency with minimized COUT Learn More about Texas Instruments ti lmr60440 converter	Datasheet	1,000Expected 10/21/2026	Cut Tape S/9.73 S/7.24 S/6.62 S/5.92 View Reel S/4.71 S/5.61 S/5.57 S/4.71 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	SMD/SMT	WQFN-HR-9	Buck	3.3 V, 1V to 20 V	4 A	1 Output	3.8 uA	2 MHz	- 40 C	+ 150 C		Reel, Cut Tape, MouseReel
Switching Voltage Regulators Automotive, 36V, 4A synchronous buck converter with low IQ and high efficiency with minimized COUT LMR604405SBRAKRQ1 Texas Instruments 1: S/9.73 1,000Expected 10/21/2026 New Product	Mfr. Part # LMR604405SBRAKRQ1 Mouser Part # 595-MR604405SBRAKRQ1 New Product	Texas Instruments	Switching Voltage Regulators Automotive, 36V, 4A synchronous buck converter with low IQ and high efficiency with minimized COUT Learn More about Texas Instruments ti lmr60440 converter	Datasheet	1,000Expected 10/21/2026	Cut Tape S/9.73 S/7.24 S/6.62 S/5.92 View Reel S/4.71 S/5.61 S/5.57 S/4.71 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	SMD/SMT	WQFN-HR-9	Buck	5 V, 1 V to 20 V	4 A	1 Output		2 MHz	- 40 C	+ 150 C		Reel, Cut Tape, MouseReel

LMR60440/-Q1 Synchronous Buck Converters

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