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

Maxim's MAX17543/44/45 High-Efficiency Synchronous Step-Down DC-DC Converters are a high-efficiency, high-voltage, synchronous step-down DC-DC converter with integrated MOSFETs operates 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 (GBP) 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: £5.42 799In Stock	Mfr. Part No. MAX17544ATP+ Mouser Part No 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	£5.42 £4.20 £3.88 £3.50 View £3.40 £3.29	Min.: 1 Mult.: 1 Max.: 1,439			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 2.5A, 60V, Synchronous Buck Regulator MAX17543ATP+ Analog Devices / Maxim Integrated 1: £4.75 385In Stock	Mfr. Part No. MAX17543ATP+ Mouser Part No 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	385In Stock	£4.75 £3.64 £3.36 £3.06 £2.91	Min.: 1 Mult.: 1 Max.: 308			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: £4.75 557In Stock	Mfr. Part No. MAX17543ATP+T Mouser Part No 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	557In Stock	Cut Tape £4.75 £3.64 £3.36 £3.06 £3.00 £3.00 MouseReel Available	Min.: 1 Mult.: 1 Max.: 445			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, 3.5A, High-Efficiency, Synchronous Step-Down DC-DC Converter with Internal Compensation MAX17544ATP+T Analog Devices / Maxim Integrated 1: £5.62 1,394In Stock	Mfr. Part No. MAX17544ATP+T Mouser Part No 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 £5.62 £4.34 £4.02 £3.68 View £3.40 £3.30 £3.30 MouseReel Available	Min.: 1 Mult.: 1 Max.: 1,115			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 4.5V 42V, 1.7A, High-Efficiency, Synchronous Step-Down DC-DC Converter With Internal Compensation MAX17545ATP+T Analog Devices / Maxim Integrated 1: £3.10 2,855In Stock	Mfr. Part No. MAX17545ATP+T Mouser Part No 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	2,855In Stock	Cut Tape £3.10 £2.33 £2.15 £1.94 View Reel £1.72 £1.84 £1.83 £1.72 £1.72 MouseReel Available	Min.: 1 Mult.: 1 Max.: 1,404 : 2,500			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