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Buck Converter

10 parts

Step-down switching regulators that convert a higher rail (e.g. 12 V, battery, USB-PD) to logic voltages efficiently — typically 85–95% efficiency versus the heat of an LDO.

How to choose

Size by output current with margin (≥30%) and check the datasheet efficiency curve at your actual load.
Fixed-output parts save a feedback divider; adjustable parts add flexibility.
Follow the datasheet layout: input cap placement and a tight switch-node loop decide whether it is quiet or an EMI problem.

	Part	LCSC	Description	Package	JLC class
	AP63203QWU-7 DIODES(美台)	C5248536	Step-down converter, 2A, 3.8V~32V, Output Voltage:3.3V, Frequency - Switching:1.1MHz, Operating Temperature:-40°C~+125°C@(TA)	TSOT-23-6	Extended Part
	MP1584EN-LF-Z MPS(芯源)	C15051	Step-down buck converter, 4.5V~28V supply, 800mV~25V output, 3A output, 100kHz~1.5MHz switching, -20°C~+85°C@(TA).	SOIC-8-EP	Extended Part
	MP4560DN-LF-Z MPS(芯源)	C40133	Step-down buck converter, 3.8V~55V supply, 800mV~52V output, 2A output, 1MHz/2MHz switching, -40°C~+125°C@(TJ).	SOIC-8-EP	Extended Part
	SY8089AAAC Silergy(矽力杰)	C78988	Step-down converter, 2A output, 2.7V~5.5V supply, 1MHz switching frequency, -40°C~+85°C@(TA).	SOT-23-5	Extended Part
	LM5164QDDARQ1 TI(德州仪器)	C2072225	Step-down converter, 1A output, 6V~100V supply, 1MHz switching frequency, -40°C~+150°C@(TJ).	SO-8	Extended Part
	LMR36506R5RPER TI(德州仪器)	C2866484	降压型 600mA 3.6V~65V 3.6V~65V Function:Step-down type Voltage - Supply:3.6V~65V Voltage - Supply:3.6V~65V Output Voltage:5V Output Voltage:5V Output Current:600mA Frequency - Switching:200kHz~2.2MHz Frequency - Switching:200kHz~2.2MHz Operating Temperature:-40℃~+150℃@(TJ) Operating Te	VQFN-9(2.1x2.1)	Extended Part
	TLV62569DBVT TI(德州仪器)	C2071150	TLV62569DBVT Function:Step-down type Output Type:Adjustable Input Voltage:2.5V~5.5V Input Voltage:2.5V~5.5V Output Voltage:600mV~5.5V Output Voltage:600mV~5.5V Output Current:2A Switching Frequency:1.5MHz Switching Frequency:1.5MHz Operating Temperature:-40℃~+125℃@(TJ	SOT-23-5	Extended Part
	TPS54360BQDDARQ1 TI(德州仪器)	C2687968	Step-down converter, 3.5A, 4.5V~60V supply, 800mV~58.8V output, 2.5MHz switching frequency, -40°C~+150°C@(TJ).	SO-8-EP	Extended Part
	B560C-13-F Texas Instruments	C85100	TPS54360 buck catch diode (SW to GND) - TI reference design part 60V/5A Schottky	SMC_L7.1-W6.2-LS8.1-RD	Basic Part
	TPS54360DDAR Texas Instruments	C44377	60V 3.5A buck converter	SOIC-8_L5.0-W4.0-P1.27-LS6.0-BL-EP2.0	Extended Part

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