MAX17509
Info: : PRODUCTION
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MAX17509

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

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

Info: : PRODUCTION tooltip
Info: : PRODUCTION tooltip
Part Details
Part Models 2
1ku List Price Starting From $3.19
Features
  • 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
Additional Details
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The MAX17509 integrates two 3A internal switch step-down regulators with programmable features. The device can be configured as two single-phase independent, 3A power supplies or as a dual-phase, single-output 6A power supply. The device operates from 4.5V to 16V input and generates independently adjustable output voltage in the ranges of 0.904V to 3.782V and 4.756V to 5.048V, with ±2% system accuracy.

This device provides maximum flexibility to the end-user by allowing to choose multiple programmable options by connecting resistors to the configuration pins. Two key highlights of the device are the self-configured compensation for any output voltage and the ability to program the slew rate of LX switching nodes to mitigate noise concerns. In noise-sensitive applications, such as high-speed multi-gigabit transceivers in FPGAs, RF, and audio benefit from this unique slew rate control. SYNC input is provided for synchronized operation of multiple devices with system clocks.

MAX17509 offers output overvoltage (OV) and undervoltage (UV) protection, as well as overcurrent (OC) and undercurrent (UC) protection with a selectable hiccup/latch option. It operates over the -40°C to +125°C temperature range, with thermal sensing and shutdown provided for overtemperature (OT) protection. The device is available in a 32-pin 5mm x 5mm TQFN package.

Applications

  • Base Station Point-of-Load Regulator
  • FPGA and DSP Core Power
  • Industrial Control Equipment
  • Multiple Point-of-Load (POL) Power Supplies
Part Models 2
1ku List Price Starting From $3.19

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
MAX17509ATJ+
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  • HTML
MAX17509ATJ+T
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  • HTML
Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 1

MAX17509EVKIT

Evaluation Kit for MAX17509

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MAX17509EVKIT

Evaluation Kit for MAX17509

Evaluation Kit for MAX17509

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 Detail

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

  • Base Station Point-of-Load Regulator
  • FPGA and DSP Core Power
  • Industrial Control Equipment
  • Multiple Point-of-Load (POL) Power Supplies
Tools & Simulations

Tools & Simulations 2

Reference Designs

Reference Designs 2

MAXREFDES1033

3A/3.3V and 3A/5V Single-Phase, Dual-Output, Synchronous, Step-Down DC-DC Converter Using the MAX17509

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MAXREFDES1033

3A/3.3V and 3A/5V Single-Phase, Dual-Output, Synchronous, Step-Down DC-DC Converter Using the MAX17509

3A/3.3V and 3A/5V Single-Phase, Dual-Output, Synchronous, Step-Down DC-DC Converter Using the MAX17509

Features and Benefits

  • 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)
  • Mitigates 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 Brick-Wall Mode
  • Adjustable Soft-Start Rise/Fall Time with Soft-Stop Modes and Prebias Startup
View Detailed Reference Design external link

Part Used 1

Design & Integration Tools

pdf icon

ZIP

1.87 M

MAXREFDES1016

6.6W Dual-Phase Buck Converter

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MAXREFDES1016

6.6W Dual-Phase Buck Converter

6.6W Dual-Phase Buck Converter

Features and Benefits

  • 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 Brick-Wall Mode
  • Adjustable Soft-Start Rise/Fall Time with Soft-Stop Modes and Prebias Startup
View Detailed Reference Design external link

Part Used 1

Design & Integration Tools

pdf icon

ZIP

4.31 M

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