MAX17509

Name: MAX17509
Brand: Analog Devices
Price: 4.04 USD
Availability: InStock

PRODUCTION

4.5V–16V, Dual 3A, High-Efficiency, Synchronous Step-Down DC-DC Converter with Resistor Programmability

Highly Customizable Buck Regulator Can Be Configured for Two Independent 3A Outputs or a Dual-Phase 6A Single Output

Data Sheet (Rev. 0) Product Selection Table

Part Models: 2
1ku List Price: Starting From $4.04

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Overview

Reduces Number of DC-DC Regulators in Inventory
- Output Voltage (0.904V to 3.782V and 4.756V to 5.048V with 20mV Resolution)
- Configurable Two Independent Outputs (3A/3A) or a Dual-Phase Single Output (6A)
Mitigate Noise Concerns and EMI
- Adjustable Switching Frequency with Selectable 0/180° Phase Shift
- External Frequency Synchronization
- Adjustable Switching Slew Rate
- Passes EN55022 (CISPR22) Class-B Radiated and Conducted EMI Standard
Ease of System Design
- All Ceramic Capacitors Solution
- Auto-Configured Internal Compensation
- Selectable Hiccup or Brickwall Mode
- Adjustable Soft-Start Rise/Fall Time with Soft Stop Modes and Prebias Startup
- -40°C to +125°C Operation
Reliable Operation
- Robust Fault Protections (VIN_UVLO, UV/OV, UC/OC, OT)
- Power Good

Part Models: 2
1ku List Price: Starting From $4.04

Documentation

Data Sheet 1

MAX17509: 4.5V–16V, Dual 3A, High-Efficiency, Synchronous Step-Down DC-DC Converter with Resistor Programmability Data Sheet (Rev.0) 06/17/2015

Technical Articles 2

Remote Radio Head Power Supplies 04/05/2023

Wireless Backhaul Power Supplies 03/10/2023

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
MAX17509ATJ+	32-Lead TQFN (5mm x 5mm x 0.75mm)	Material Declaration Reliability Report Package Resources	Ultra Librarian SamacSys
MAX17509ATJ+T	32-Lead TQFN (5mm x 5mm x 0.75mm)	Material Declaration Reliability Report Package Resources	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Apr 20, 2026 - 2571D PIN/ERRATA
		pcn_2571d
MAX17509ATJ+T	PRODUCTION	pcn_2571d

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

Software Resources

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Tools & Simulations

ADI Power Studio™ Designer

ADI Power Studio™ Designer is the next-generation tool for IC-level, power supply design, guiding engineers to faster, validated solutions.

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SIMPLIS Models 2

Evaluation Kits

Evaluation Kit for MAX17509

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Features and Benefits

Wide Input-Voltage Range (4.5V to 16V)
3.3V and 1.2V Output Voltages
Up to 3A Output Current per Regulator
Two Independent Outputs Operating 180° Out-of-Phase
1MHz Switching Frequency
External Frequency Synchronization Input
Brickwall and Latchoff Overcurrent Response (Selectable to Hiccup Response)
Autoconfigured Internal Compensation
Power-Good Output Indicator
Independent Adjustable EN/UVLO Input
Independent Adjustable Soft-Start Time with Soft-Stop Option
Selectable Switching Slew Rate for EMC Compliant
Low-Profile and Small-Size, Surface-Mount Components
Fully Assembled and Tested

Product Details

The MAX17509 evaluation kit (EV kit) is a fully assembled and tested circuit board to demonstrate the performance of the MAX17509, a dual 3A, high-efficiency, synchronous step-down DC-DC converter. The EV kit operates from a 4.5V to 16V input voltage to generate two, independent 3.3V and 1.2V outputs, with each regulator delivering up to 3A continuous output current. The EV kit is preset to the default 1MHz switching frequency for optimum efficiency and component sizes, and each regulator operates 180° out-of-phase to reduce input-voltage ripple and total RMS input ripple current. The EV kit also features adjustable input undervoltage-lockout (UVLO), programmable frequency, external frequency synchronization input, adjustable output voltage ranging from 0.904V to 3.782V and 4.756V to 5.048V with 20mV resolution, selectable switching slew rate, adjustable soft- start time with soft-stop option, power-good outputs, and selectable overcurrent (OC) fault response to promote design flexibility and system reliability.

Applications