MAX17543

PRODUCTION

4.5V-42V, 2.5A, High-Efficiency, Synchronous Step-Down DC-DC Converter with Internal Compensation

Wide Input Voltage, 2.5A Internal FET Synchronous Buck Converter Ideal for Industrial Applications

Data Sheet (Rev. 1) Product Selection Table
Part Models
2
1ku List Price
Starting From $2.09
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Part Details

  • Reduces External Components and Total Cost
    • No Schottky—Synchronous Operation
    • Internal Compensation for Any Output Voltage
    • Built-In Soft-Start
    • All-Ceramic Capacitors, Compact Layout
  • Reduces Number of DC-DC Regulators to Stock
    • Wide 4.5V to 42V Input
    • Adjustable 0.9V to 0.9 x VIN Output
    • 100kHz to 2.2MHz Adjustable Switching Frequency with External Synchronization
  • Reduces Power Dissipation
    • Peak Efficiency >90%
    • PFM/DCM Enables Enhanced Light-Load Efficiency
    • 2.8µA Shutdown Current
  • Operates Reliably in Adverse Industrial Environments
    • Peak Current-Limit Protection
    • Built-In Output Voltage Monitoring with Active-Low RESET
    • Programmable EN/UVLO Threshold
    • Monotonic Startup into Prebiased Load
    • Overtemperature Protection
    • High Industrial -40°C to +125°C Ambient Operating Temperature Range/-40°C to +150°C Junction Temperature Range
MAX17543
4.5V-42V, 2.5A, High-Efficiency, Synchronous Step-Down DC-DC Converter with Internal Compensation
MAX17543: Block Diagram
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Documentation

Data Sheet 1

Reliability Data 1

User Guide 1

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Software Resources

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Hardware Ecosystem

Parts Product Life Cycle Description
Internal Power Switch Buck Regulators 1
MAX17503
PRODUCTION 4.5V-60V, 2.5A, High-Efficiency, Synchronous Step-Down DC-DC Converter with Internal Compensation
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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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SIMPLIS Models 1

Evaluation Kits

MAX17543EVKITB

Evaluation Kit for the MAX17543 in 5V Output-Voltage Application

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Features and Benefits

  • Operates from a 6.5V to 42V Input Supply
  • 5V Output Voltage
  • Up to 2.5A Output Current
  • 500kHz Switching Frequency
  • Enable/UVLO Input, Resistor-Programmable UVLO Threshold
  • Adjustable Soft-Start Time
  • MODE Pin to Select Among PWM, PFM, or DCM Modes
  • Open-Drain Active-Low RESET Output
  • External Frequency Synchronization
  • Overcurrent and Overtemperature Protection
  • Proven PCB Layout
  • Fully Assembled and Tested

Product Details

The MAX17543 5V output evaluation kit (EV kit) provides a proven design to evaluate the MAX17543 high-voltage, high-efficiency, synchronous step-down DC-DC converter. The EV kit is preset for 5V output at load currents up to 2.5A and features a 500kHz switching frequency for optimum efficiency and component size. The EV kit features adjustable input undervoltage lockout, adjustable soft-start, open-drain active-low RESET signal, and external frequency synchronization.

Applications

  • Base Station Power Supply
  • Distributed Supply Regulation
  • General-Purpose Point-of-Load
  • High-Voltage Single-Board Systems
  • Industrial Power Supplies

MAX17543EVKITA

Evaluation Kit for the MAX17543 in 3.3V Output-Voltage Application

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Features and Benefits

  • Operates from a 5V to 42V Input Supply
  • 3.3V Output Voltage
  • Up to 2.5A Output Current
  • 450kHz Switching Frequency
  • Enable/UVLO Input, Resistor-Programmable UVLO Threshold
  • Adjustable Soft-Start Time
  • MODE Pin to Select Among PWM, PFM, or DCM Modes
  • Open-Drain RESET Output
  • External Frequency Synchronization
  • Overcurrent and Overtemperature Protection
  • Proven PCB Layout
  • Fully Assembled and Tested

Product Details

The MAX17543 3.3V output evaluation kit (EV kit) provides a proven design to evaluate the MAX17543 high-voltage, high-efficiency, synchronous step-down DC-DC converter. The EV kit is preset for 3.3V output at load currents up to 2.5A and features a 450kHz switching frequency for optimum efficiency and component size. The EV kit features adjustable input undervoltage lockout, adjustable soft-start, open-drain active-low RESET signal, and external frequency synchronization.

Applications

  • Base Station Power Supply
  • Distributed Supply Regulation
  • General-Purpose Point-of-Load
  • High-Voltage Single-Board Systems
  • Industrial Power Supplies
MAX17543EVKITB
Evaluation Kit for the MAX17543 in 5V Output-Voltage Application
MAX17543EVKITA
Evaluation Kit for the MAX17543 in 3.3V Output-Voltage Application

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