MAX17645

RECOMMENDED FOR NEW DESIGNS

4.5V to 36V, 1A, High-Efficiency, Synchronous Step-Down DC-DC Converter

High-Efficiency, High-Voltage, Synchronous Step-Down DC-DC Converter with Integrated MOSFETs

Data Sheet (Rev. 0)
Product Selection Table
Part Models
4
1ku List Price
Starting From $0.49
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  • Part Details
  • Documentation
  • Software Resources
  • Tools & Simulations
  • Evaluation Kits
  • Latest Discussions
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    Part Details

    • Reduces External Components and Total Cost
      • No Schottky—Synchronous Operation
      • Internal Control Loop Compensation
      • Internal Soft-Start
      • All Ceramic Capacitors, Ultra-Compact Layout
    • Reduces Number of DC-DC Regulators to Stock
      • Wide 4.5V to 36V Input Voltage Range
      • Adjustable Output from 0.9V up to 89% of VIN
      • Delivers Up to 1A Load Current
    • High Efficiency
      • 90% Full-Load Efficiency (VIN = 24V, VOUT = 5V, IOUT = 1A)
      • 2.2μA (typ) Shutdown Current
      • High Light-Load Efficiency with PFM Mode (MAX17645D)
    • Flexible Design
      • Programmable EN/UVLO Threshold
      • Monotonic Startup into Prebiased Output
      • Open-Drain Output (Actiive-Low RESET) for Output Status Monitoring
    • Robust Operation
      • Built-In Hiccup Mode Overload Protection
      • Overtemperature Protection
      • CISPR32 Class B Compliant
      • Wide -40°C to +125°C Ambient Operating Temperature/-40°C to +150°C Junction Temperature
    MAX17645
    4.5V to 36V, 1A, High-Efficiency, Synchronous Step-Down DC-DC Converter
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    Documentation

    Data Sheet 1

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    Software Resources

    Can't find the software or driver you need?

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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.

    Start EE-Sim Now

    Evaluation Kits

    eval board
    schematic 1
    MAX17645DEVKITB

    Evaluation Kit for the MAX17645 in 5V Output Voltage Application

    Buy Now View Details

    Features and Benefits

    • Wide 7V to 36V Input Range
    • Up to 1A Load Current
    • 650kHz Fixed Switching Frequency
    • High Peak Efficiency of 91.1% (VIN = 24V, VOUT = 5V,IOUT = 0.6A)
    • EN/UVLO for On/Off Control and Programmable Input Undervoltage Lockout
    • Fixed 3.15ms (typ) Soft-Start Time
    • Open-Drain Active-Low RESET Output
    • Overcurrent and Overtemperature Protection
    • Proven PCB Layout
    • Fully Assembled and Tested
    • Complies with CISPR32 (EN55032) Class B Conducted and Radiated Emissions

    Product Details

    The MAX17645BEVKITB# and MAX17645DEVKITB# evaluation kits (EV kits) provide proven 5V designs to evaluate the performance of MAX17645B and MAX17645D high-efficiency, high-voltage, synchronous step-down DC-DC converters. The MAX17645BEVKITB# EV kit operates in constant frequency PWM (pulse-width modulation) mode at all loads and the MAX17645DEVKITB# EV kit operates in PFM (pulse-frequency modulation) mode at light loads to improve efficiency.

    The EV kits are configured to demonstrate the optimum performance and component sizes for MAX17645B/ MAX17645D converter. The EV kits support a wide operating input range of 7V to 36V and are configured for 5V output. The EV kits deliver up to 1A at a switching frequency of 650kHz.

    The features of the EV kits include adjustable input undervoltage lockout, fixed internal soft-start, and open-drain active-low RESET signal for output voltage status monitoring. The EV kits also provide a good layout example, which is optimized for conducted, radiated EMI, and thermal performance. For more details about the IC benefits and features, refer to the MAX17645 IC data sheet.

    Applications

    • Factory Automation
    • Aftermarket Market Automation
    • General Point of Load

    eval board
    schematic 2
    MAX17645BEVKITB

    Evaluation Kit for the MAX17645 in 5V Output Voltage Application

    Buy Now View Details

    Features and Benefits

    • Wide 7V to 36V Input Range
    • Up to 1A Load Current
    • 650kHz Fixed Switching Frequency
    • High Peak Efficiency of 91.1% (VIN = 24V, VOUT = 5V,IOUT = 0.6A)
    • EN/UVLO for On/Off Control and Programmable Input Undervoltage Lockout
    • Fixed 3.15ms (typ) Soft-Start Time
    • Open-Drain Active-Low RESET Output
    • Overcurrent and Overtemperature Protection
    • Proven PCB Layout
    • Fully Assembled and Tested
    • Complies with CISPR32 (EN55032) Class B Conducted and Radiated Emissions

    Product Details

    The MAX17645BEVKITB# and MAX17645DEVKITB# evaluation kits (EV kits) provide proven 5V designs to evaluate the performance of MAX17645B and MAX17645D high-efficiency, high-voltage, synchronous step-down DC-DC converters. The MAX17645BEVKITB# EV kit operates in constant frequency PWM (pulse-width modulation) mode at all loads and the MAX17645DEVKITB# EV kit operates in PFM (pulse-frequency modulation) mode at light loads to improve efficiency.

    The EV kits are configured to demonstrate the optimum performance and component sizes for MAX17645B/ MAX17645D converter. The EV kits support a wide operating input range of 7V to 36V and are configured for 5V output. The EV kits deliver up to 1A at a switching frequency of 650kHz.

    The features of the EV kits include adjustable input undervoltage lockout, fixed internal soft-start, and open-drain active-low RESET signal for output voltage status monitoring. The EV kits also provide a good layout example, which is optimized for conducted, radiated EMI, and thermal performance. For more details about the IC benefits and features, refer to the MAX17645 IC data sheet.

    Applications

    • Factory Automation
    • Aftermarket Market Automation
    • General Point of Load
    MAX17645DEVKITB
    Evaluation Kit for the MAX17645 in 5V Output Voltage Application
    MAX17645BEVKITB
    Evaluation Kit for the MAX17645 in 5V Output Voltage Application

    Latest Discussions

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