MAX17793

RECOMMENDED FOR NEW DESIGNS

3V to 80V, 3A, High-Efficiency, Synchronous Step-Down DC-DC Converter

Data Sheet (Rev. 2) Product Selection Table

Part Models: 2
1ku List Price: Starting From $3.64

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Part Details

Reduces solution size and Cost

No Schottky–Synchronous Operation
Internal Compensation Components
All-Ceramic Capacitors, Compact Layout
Adjustable Output Range from 0.6V to 90% of V_IN
300kHz to 1.5MHz Adjustable Frequency with External Clock Synchronization
EMI with symmetrical IN pins
4mm × 4mm 18L-FC2QFN

Reduces Power Dissipation

Peak Efficiency of 91% (V_IN = 48V and V_OUT = 5V)
Enhanced Light-load Efficiency with Switching Frequency Modulation (SFM) Mode
External Bias Input for Improved Efficiency

Die Temperature Monitoring
Operates Reliably in Adverse Industrial Environments

Built-in Hiccup-Mode Overload Protection
Programmable Soft-Start
Built-in Output-Voltage Monitoring with RESET/TJ pin
Programmable EN/UVLO Threshold
Complies with CISPR32 (EN55032) Class B Conducted and Radiated Emissions
High Industrial −40°C to +125°C Ambient Operating Temperature Range/−40°C to +150°C Junction Temperature range

Part Models: 2
1ku List Price: Starting From $3.64

Documentation

Data Sheet 1

MAX17793: 3V to 80V, 3A, High-Efficiency, Synchronous Step-Down DC-DC Converter Data Sheet (Rev.2) 04/12/2024

User Guide 1

MAX17793EVKITA User Guide: Evaluates: MAX17793 in 5V Output-Voltage Application (Rev.0) 06/06/2024

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
MAX17793AFN+	18-LFCSP-4X4X0.75	Material Declaration Reliablity Data	Ultra Librarian SamacSys
MAX17793AFN+T	18-LFCSP-4X4X0.75	Material Declaration Reliablity Data	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Aug 21, 2024 - 2436 ASSEMBLY
		pcn_2436
MAX17793AFN+	PRODUCTION	pcn_2436

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

Software Resources

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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.

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Evaluation Kits

Evaluates: MAX17793 in 5V Output-Voltage Application

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Features and Benefits

Operates from a 6.5V to 80V Input Supply
Up to 3A Load Current
5V Output Voltage
400kHz Switching Frequency
High 91% Efficiency (V_IN = 48V, I_OUT = 3A)
Selectable PWM and SFM Modes of Operation
Die Temperature Monitor
Enable/UVLO Input, Resistor-Programmable Input Undervoltage Lockout (UVLO) Threshold

Adjustable Soft-Start Time
Open-Drain RESET Output
External Frequency Synchronization
Overcurrent and Overtemperature Protection
Proven Printed Circuit Board (PCB) Layout
Fully Assembled and Tested
Complies with CISPR 32 (EN55032) Class B Conducted and Radiated Emissions

Product Details

The MAX17793 5V output evaluation board provides a proven design to evaluate the MAX17793 high voltage, high-efficiency, synchronous step-down DC-DC converters. The application circuit is configured to demonstrate optimum performance and component sizes in the evaluation board. The evaluation board also provides a good layout example, optimized for conducted, radiated Electromagnetic interference (EMI), and thermal performance.

The evaluation board is configured to operate at 400kHz switching frequency over a 6.5V to 80V input voltage range and deliver up to 3A load current.

The evaluation board features an adjustable input undervoltage-lockout, adjustable soft-start, open-drain RESET/TJ, die temperature monitor, external clock synchronization, thermal shutdown, and selectable mode of operation [pulse-width modulation (PWM) or switching frequency modulation (SFM)].

The MAX17793 converter data sheet provides a complete description of the part that should be read in conjunction with this user guide before operating the evaluation board.

Resources

MAX17793EVKITA User Guide: Evaluates: MAX17793 in 5V Output-Voltage Application (Rev.0)
1/1/0001

MAX17793EVKITA Gerber Files
6/6/2024

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