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 VIN. 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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Description Datasheet Availability Pricing (PHP) Filter the results in the table by unit price based on your quantity.
Qty. RoHS ECAD Model Mounting Style
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Output Voltage
Output Current
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Maximum Operating Temperature
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Analog Devices / Maxim Integrated Switching Voltage Regulators 2.5A, 60V, Synchronous Buck Regulator
Datasheet
985In Stock
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

Analog Devices / Maxim Integrated Switching Voltage Regulators 2.5A, 60V, Synchronous Buck Regulator
Datasheet
616In Stock
2,500Expected 19/11/2026
MouseReel Available
Min.: 1
Mult.: 1
: 2,500

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

Analog Devices / Maxim Integrated Switching Voltage Regulators 4.5V 42V, 3.5A, High-Efficiency, Synchronous Step-Down DC-DC Converter with Internal Compensation
Datasheet
799In Stock
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
Analog Devices / Maxim Integrated Switching Voltage Regulators 4.5V 42V, 3.5A, High-Efficiency, Synchronous Step-Down DC-DC Converter with Internal Compensation
Datasheet
1,617In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2,500

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
Analog Devices / Maxim Integrated Switching Voltage Regulators 4.5V 42V, 1.7A, High-Efficiency, Synchronous Step-Down DC-DC Converter With Internal Compensation
Datasheet
5,162In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 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

Analog Devices / Maxim Integrated Switching Voltage Regulators 4.5V 42V, 1.7A, High-Efficiency, Synchronous Step-Down DC-DC Converter With Internal Compensation
Datasheet
611Expected 01/02/2027
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 Tube