MAX42403

RECOMMENDED FOR NEW DESIGNS

36V, 2.5A/3.5A, Fully Integrated Synchronous Buck Converter

Data Sheet (Rev. 2) Product Selection Table

Part Models: 4
1ku List Price: Starting From $0.79

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Part Details

Multiple Functions for Small Size
- Operating Input Voltage Range: 4.5V to 36V
- Synchronous DC-DC Converter with Integrated FETs up to 2.5A/3.5A
- 27μA Quiescent Current in Skip Mode
- 1.5MHz/400kHz Switching Frequency
- Spread-Spectrum Option
- 3.5ms (1.5MHz)/2.5ms (400kHz) Internal Soft-Start
- Programmable 0.8V to 12V Output Voltage Range
- 99% Duty Cycle Operation with Low Dropout

High Precision for Safety-Critical Applications
- Precision Enable Thresholds for Fully Programmable UVLO Thresholds
- Accurate Windowed PGOOD
Forced-PWM and Skip Operation
Overtemperature, Overvoltage, and Short-Circuit Protection
3mm x 3mm FC2QFN
-40°C to +125°C Operating Temperature Range

Part Models: 4
1ku List Price: Starting From $0.79

Documentation

Data Sheet 1

MAX42402-MAX42403: 36V, 2.5A/3.5A, Fully Integrated Synchronous Buck Converter Data Sheet (Rev.2) 10/22/2024

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.

Part Model	Pin/Package Drawing	Documentation	CAD Symbols, Footprints, and 3D Models
MAX42403AFLA+	15 LD, FC2QFN 3X3X0.75	Material Declaration Reliablity Data	Ultra Librarian SamacSys
MAX42403AFLA+T	15 LD, FC2QFN 3X3X0.75	Material Declaration Reliablity Data	Ultra Librarian SamacSys
MAX42403AFLB+	15 LD, FC2QFN 3X3X0.75	Material Declaration Reliablity Data	Ultra Librarian SamacSys
MAX42403AFLB+T	15 LD, FC2QFN 3X3X0.75	Material Declaration Reliablity Data	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN
No Match Found
Apr 27, 2024 - 2400 ASSEMBLY
		pcn_2400
MAX42403AFLA+	PRODUCTION
MAX42403AFLB+	PRODUCTION
MAX42403AFLB+T	PRODUCTION

This is the most up-to-date revision of the Data Sheet.

Tools & Simulations

EE-Sim Power® Tools 1

The EE-Sim DC-DC Converter Tool uses your requirements to quickly create a complete power design including a schematic, BOM with commercially available parts, and time and frequency domain simulations. Your customized schematic can be downloaded for further analysis in the standalone EE-Sim OASIS Simulator, featuring SIMPLIS and SIMetrix SPICE engines.

Start EE-Sim Now

Evaluation Kits

Evaluation Kit for MAX42402/MAX42403

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Features and Benefits

4.5V to 36V Input Supply Range
Adjustable Output Between 0.8V and 12V
Delivers up to 3.5A Output Current (up to 2.5A for the MAX42402)
Frequency Synchronization Input
99% Duty Cycle Operation with Low Dropout
Voltage-Monitoring PGOOD Output with UV/OV Feature
Proven PCB Layout
Fully Assembled and Tested

Product Details

The MAX42403 evaluation kit (EV kit) provides a proven design to evaluate the MAX42402/MAX42403, high input-voltage, mini buck converter in a 15-pin, FC2QFN package. Various test points and jumpers are included for evaluation. The MAX42403 EV kit comes with the MAX42403AFLB+ installed (3.3V, 1.5MHz). This EV kit can be used to evaluate all variants of the MAX42402/MAX42403 with minimal component changes.

Resources

MAX42403EVKIT Gerber Files
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