MAX17551

PRODUCTION

60V, 50mA, Ultra-Small, High-Efficiency, Synchronous Step-Down DC-DC Converter with 22μA No-Load Supply Current

60V, Low IQ Synchronous Buck Regulator Enables High Efficiency

Data Sheet (Rev. 3) Product Selection Table
Part Models
4
1ku List Price
Starting From $1.40
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  • Part Details
  • Documentation
  • Software Resources
  • Hardware Ecosystem
  • Tools & Simulations
  • Evaluation Kits
  • Latest Discussions
    •

    Part Details

    • Reduces External Components and Total Cost
      • No Schottky–Synchronous
      • Internal Compensation for Any Output Voltage
      • Built-In Soft-Start
      • All-ceramic capacitors, Compact Layout
    • Reduces Number of DC-DC Regulators to Stock
      • Wide 4V to 60V Input
      • Adjustable 0.8V to 0.9 x VIN Output
      • 100kHz to 2.2MHz Adjustable Switching Frequency with External Synchronization
    • Reduces Power Dissipation
      • 22µA Quiescent Current
      • Peak Efficiency > 90%
      • PFM Enables Enhanced Light-Load Efficiency
      • 1.2µA Shutdown Current
    • Operates Reliable in Adverse Environments
      • Peak Current Limit Protection
      • Built-In Output Voltage Monitoring Active-Low RESET
      • Programmable EN/UVLO Threshold
      • Monotonic Startup in to Prebiased Load
      • Overtemperature Protection
      • Overtemperature Protection • High Industrial -40°C to +125°C Ambient Operating Temperature Range / -40°C to +150°C Junction Temperature Range
    MAX17551
    60V, 50mA, Ultra-Small, High-Efficiency, Synchronous Step-Down DC-DC Converter with 22μA No-Load Supply Current
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    Documentation

    Data Sheet 1

    User Guide 1

    Technical Articles 2

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    Software Resources

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    Hardware Ecosystem

    Parts Product Life Cycle Description
    Internal Power Switch Buck Regulators 2
    MAX17552
    		PRODUCTION 60V, 100mA, Ultra-Small, High-Efficiency, Synchronous Step-Down DC-DC Converter with 22μA No-Load Supply Current
    MAX15062
    		PRODUCTION 60V, 300mA, Ultra-Small, High-Efficiency, Synchronous Step-Down DC-DC Converters
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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

    MAX17551ATBEVKIT

    Evaluation Kit (TDFN) for MAX17551

    Buy Now View Details

    Features and Benefits

    • 6V to 60V Input Voltage Range
    • 5V Output, 50mA Continuous Current
    • 26µA No-Load Supply Current
    • EN/UVLO for On/Off Control and Programmable Input Undervoltage Lockout
    • Programmable Switching Frequency
    • Internal or Programmable Soft-Start
    • PFM or Forced-PWM Mode of Operation
    • Open-Drain Active-Low RESET Output
    • Peak Current-Limit Protection
    • Thermal Shutdown
    • Proven PCB Layout
    • Fully Assembled and Tested

    Product Details

    The MAX17551 5V evaluation kit (EV kit) (TDFN) is a fully assembled and tested circuit board that demonstrates the performance of the MAX17551 60V, 50mA ultra-small, high-efficiency, synchronous step-down DC-DC converter in a 10-pin TDFN package. The EV kit operates over a wide input voltage range of 6V to 60V and provides up to 50mA load current at 5V output. It draws only 26µA supply current under no-load conditions (EN/UVLO connected to VIN). The EV kit is programmed to switch at a frequency of 300kHz. The device is simple to use and easily configurable with minimal external components. It features cycle-by-cycle peak current-limit protection, undervoltage lockout, and thermal shutdown.

    The EV kit comes installed with the MAX17551ATB+ in a 10-pin (3mm x 2mm) lead(Pb)-free/RoHS-compliant TDFN package.

    Applications

    • Battery-Powered Equipment
    • High-Voltage LDO Replacement
    • HVAC and Building Control
    • Industrial Sensors and Process Control

    MAX17551AUBEVKIT

    Evaluation Kit (µMAX) for MAX17551

    Buy Now View Details

    Features and Benefits

    • 6V to 60V Input Voltage Range
    • 5V Output, 50mA Continuous Current
    • 26µA No-Load Supply Current
    • EN/UVLO for On/Off Control and Programmable Input Undervoltage Lockout
    • Programmable Switching Frequency
    • Internal or Programmable Soft-Start
    • PFM or Forced-PWM Mode of Operation
    • Open-Drain Active-Low RESET Output
    • Peak Current-Limit Protection
    • Thermal Shutdown
    • Proven PCB Layout
    • Fully Assembled and Tested

    Product Details

    The MAX17551 5V evaluation kit (EV kit) (µMAX) is a fully assembled and tested circuit board that demonstrates the performance of the MAX17551 60V, 50mA ultra-small, high-efficiency, synchronous step-down DC-DC converter in a 10-pin µMAX package. The EV kit operates over a wide input voltage range of 6V to 60V and provides up to 50mA load current at 5V output. It draws only 26µA supply current under no-load conditions (EN/UVLO connected to VIN). The EV kit is programmed to switch at a frequency of 300kHz. The device is simple to use and easily configurable with minimal external components. It features cycle-by-cycle peak current-limit protection, undervoltage lockout, and thermal shutdown.

    The EV kit comes installed with the MAX17551AUB+ in a 10-pin (3mm x 3mm) lead(Pb)-free/RoHS-compliant µMAX package.

    Applications

    • Battery-Powered Equipment
    • High-Voltage LDO Replacement
    • HVAC and Building Control
    • Industrial Sensors and Process Control
    MAX17551ATBEVKIT
    Evaluation Kit (TDFN) for MAX17551
    MAX17551AUBEVKIT
    Evaluation Kit (µMAX) for MAX17551

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