MAX42402/MAX42403 Synchronous Buck Converters

Analog Devices Inc. MAX42402/MAX42403 Synchronous Buck Converters are tiny synchronous buck converters with integrated high-side and low-side switches. The MAX42402/MAX42403 are designed to deliver up to 2.5A/3.5A with a wide, 4.5V to 36V input voltage range. Voltage quality can be monitored by observing the PGOOD signal. The IC can operate in dropout by running at a 99% duty cycle, making it ideal for industrial applications. The MAX42402/MAX42403 offer externally programmable output voltage. Fixed internal frequency options of 1.5MHz/400kHz are available, allowing small external components and reduced output ripple.

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Description Datasheet Availability Pricing (USD) 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
Number of Outputs
Quiescent Current
Switching Frequency
Minimum Operating Temperature
Maximum Operating Temperature
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Packaging
Analog Devices / Maxim Integrated Switching Voltage Regulators Automotive 36V, 2.5A/3.5A, Fully Integra
Datasheet
1,321In Stock
Min.: 1
Mult.: 1

MAX42402 Tray
Analog Devices / Maxim Integrated Switching Voltage Regulators Automotive 36V, 2.5A/3.5A, Fully Integra
Datasheet
2,500In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2,500

MAX42402 Reel, Cut Tape, MouseReel

Analog Devices / Maxim Integrated Switching Voltage Regulators Automotive 36V, 2.5A/3.5A, Fully Integra
Datasheet
1,864In Stock
Min.: 1
Mult.: 1

MAX42402 Tray
Analog Devices / Maxim Integrated Switching Voltage Regulators Automotive 36V, 2.5A/3.5A, Fully Integra
Datasheet
729In Stock
Min.: 1
Mult.: 1

SMD/SMT FC2QFN-15 Buck 800 mV to 12 V 3.5 A 1 Output 27 uA 400 kHz - 40 C + 125 C MAX42403 Tray
Analog Devices / Maxim Integrated Switching Voltage Regulators Automotive 36V, 2.5A/3.5A, Fully Integra
Datasheet
110In Stock
624Expected 2026/06/25
Min.: 1
Mult.: 1

SMD/SMT FC2QFN-15 Buck 800 mV to 12 V 3.5 A 1 Output 27 uA 1.5 MHz - 40 C + 125 C MAX42403 Tray
Analog Devices / Maxim Integrated Switching Voltage Regulators Automotive 36V, 2.5A/3.5A, Fully Integra
Datasheet
Non-Stocked Lead-Time 10 Weeks
MouseReel Available
Min.: 1
Mult.: 1
: 2,500

MAX42402 Reel, Cut Tape, MouseReel
Analog Devices / Maxim Integrated Switching Voltage Regulators Automotive 36V, 2.5A/3.5A, Fully Integra
Datasheet
Non-Stocked Lead-Time 10 Weeks
Min.: 2,500
Mult.: 2,500
: 2,500

SMD/SMT FC2QFN-15 Buck 800 mV to 12 V 3.5 A 1 Output 27 uA 400 kHz - 40 C + 125 C MAX42403 Reel
Analog Devices / Maxim Integrated Switching Voltage Regulators Automotive 36V, 2.5A/3.5A, Fully Integra
Datasheet
Non-Stocked Lead-Time 11 Weeks
Min.: 2,500
Mult.: 2,500
: 2,500

SMD/SMT FC2QFN-15 Buck 800 mV to 12 V 3.5 A 1 Output 27 uA 1.5 MHz - 40 C + 125 C MAX42403 Reel