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MAX17543/44/45 Step-Down DC-DC Converters

Analog Devices Inc. MAX17543/44/45 High-Efficiency Synchronous Step-Down DC-DC Converters are high-voltage devices with integrated MOSFETs operating over 4.5V to 42V input. The converter can deliver 1.7A, 2.5A, or 3.5A and generates output voltages from 0.9V up to 0.9 x V_IN. The feedback (FB) voltage is accurate to within ±1.1% over -40°C to +125°C. The MAX17543/44/45 uses peak-current-mode control. The device can be operated in pulse-width modulation (PWM), pulse-frequency modulation (PFM), or discontinuous conduction mode (DCM) control schemes.

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Select	Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (CRC) 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
	Switching Voltage Regulators 4.5V 42V, 3.5A, High-Efficiency, Synchronous Step-Down DC-DC Converter with Internal Compensation MAX17544ATP+ Analog Devices / Maxim Integrated 1: ₡3 580,80 799In Stock	Mfr. Part # MAX17544ATP+ Mouser Part # 700-MAX17544ATP+	Analog Devices / Maxim Integrated	Switching Voltage Regulators 4.5V 42V, 3.5A, High-Efficiency, Synchronous Step-Down DC-DC Converter with Internal Compensation Learn More about Analog Devices / Maxim Integrated maxim max17543 44 45 converter	Datasheet	799In Stock	₡3 580,80 ₡2 789,69 ₡2 571,10 ₡2 305,66 View ₡2 300,46 ₡2 217,18 ₡2 185,95 Quote	Min.: 1 Mult.: 1			SMD/SMT	TQFN-EP-20	Buck	900 mV to 36 V	3.5 A	1 Output	9.5 mA	2.2 MHz	- 40 C	+ 125 C	MAX17544	Tray
	Switching Voltage Regulators 4.5V 42V, 3.5A, High-Efficiency, Synchronous Step-Down DC-DC Converter with Internal Compensation MAX17544ATP+T Analog Devices / Maxim Integrated 1: ₡3 898,29 1 394In Stock	Mfr. Part # MAX17544ATP+T Mouser Part # 700-MAX17544ATP+T	Analog Devices / Maxim Integrated	Switching Voltage Regulators 4.5V 42V, 3.5A, High-Efficiency, Synchronous Step-Down DC-DC Converter with Internal Compensation Learn More about Analog Devices / Maxim Integrated maxim max17543 44 45 converter	Datasheet	1 394In Stock	Cut Tape ₡3 898,29 ₡3 008,29 ₡2 789,69 ₡2 545,08 View ₡2 357,71 ₡2 284,84 ₡2 170,34 MouseReel Available	Min.: 1 Mult.: 1			SMD/SMT	TQFN-EP-20	Buck	900 mV to 36 V	3.5 A	1 Output		100 kHz to 2.2 MHz	- 40 C	+ 125 C	MAX17544	Reel, Cut Tape, MouseReel
	Switching Voltage Regulators 2.5A, 60V, Synchronous Buck Regulator MAX17543ATP+ Analog Devices / Maxim Integrated 1: ₡3 294,55 93In Stock	Mfr. Part # MAX17543ATP+ Mouser Part # 700-MAX17543ATP+	Analog Devices / Maxim Integrated	Switching Voltage Regulators 2.5A, 60V, Synchronous Buck Regulator Learn More about Analog Devices / Maxim Integrated maxim max17543 44 45 converter	Datasheet	93In Stock	₡3 294,55 ₡2 524,26 ₡2 331,68 ₡2 118,29 View ₡2 014,20 ₡1 956,95 ₡1 930,93 ₡1 910,11	Min.: 1 Mult.: 1			SMD/SMT	TQFN-EP-20	Buck	900 mV to 36 V	2.5 A	1 Output	9.5 mA	100 kHz to 2.2 MHz	- 40 C	+ 125 C	MAX17543	Tube
	Switching Voltage Regulators 2.5A, 60V, Synchronous Buck Regulator MAX17543ATP+T Analog Devices / Maxim Integrated 1: ₡3 294,55 356In Stock	Mfr. Part # MAX17543ATP+T Mouser Part # 700-MAX17543ATP+T	Analog Devices / Maxim Integrated	Switching Voltage Regulators 2.5A, 60V, Synchronous Buck Regulator Learn More about Analog Devices / Maxim Integrated maxim max17543 44 45 converter	Datasheet	356In Stock	Cut Tape ₡3 294,55 ₡2 524,26 ₡2 331,68 ₡2 123,50 ₡2 081,86 ₡1 779,99 MouseReel Available	Min.: 1 Mult.: 1			SMD/SMT	TQFN-EP-20	Buck	900 mV to 36 V	2.5 A	1 Output	9.5 mA	100 kHz to 2.2 MHz	- 40 C	+ 125 C	MAX17543	Reel, Cut Tape, MouseReel
	Switching Voltage Regulators 4.5V 42V, 1.7A, High-Efficiency, Synchronous Step-Down DC-DC Converter With Internal Compensation MAX17545ATP+T Analog Devices / Maxim Integrated 1: ₡2 149,52 71In Stock	Mfr. Part # MAX17545ATP+T Mouser Part # 700-MAX17545ATP+T	Analog Devices / Maxim Integrated	Switching Voltage Regulators 4.5V 42V, 1.7A, High-Efficiency, Synchronous Step-Down DC-DC Converter With Internal Compensation Learn More about Analog Devices / Maxim Integrated maxim max17543 44 45 converter	Datasheet	71In Stock	Cut Tape ₡2 149,52 ₡1 618,65 ₡1 488,53 ₡1 342,80 View ₡1 275,14 ₡1 269,94 ₡1 191,87 ₡1 165,84 MouseReel Available	Min.: 1 Mult.: 1			SMD/SMT	TQFN-EP-20	Boost	900 mV to 36 V	1.7 A	1 Output	9.5 mA	2.2 MHz	- 40 C	+ 125 C	MAX17545	Reel, Cut Tape, MouseReel