MAX17634C

PRODUCTION

4.5V to 36V, 4.25A, High-Efficiency, Synchronous Step-Down DC-DC Converter

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

Data Sheet (Rev. 0) Product Selection Table
Part Models
2
1ku List Price
Starting From $1.56
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Part Details

  • Reduces External Components and Total Cost
    • No Schottky–Synchronous Operation
    • Internal Compensation Components
    • All-Ceramic Capacitors, Compact Layout
  • Reduces Number of DC-DC Regulators to Stock
    • Wide 4.5V to 36V Input
    • Adjustable Output Range from 0.9V up to 90% of VIN
    • 400kHz to 2.2MHz Adjustable Frequency with External Synchronization
    • Available in a 20-Pin, 4mm x 4mm TQFN Package
  • Reduces Power Dissipation
    • Peak Efficiency of 94%
    • PFM and DCM Modes Enable Enhanced Light-Load Efficiency
    • Auxiliary Bootstrap Supply (EXTVCC) for Improved Efficiency
    • 2.8μA Shutdown Current
  • Operates Reliably in Adverse Industrial Environments
    • Hiccup-Mode Overload Protection
    • Adjustable and Monotonic Startup with Prebiased Output Voltage
    • Built-in Output-Voltage Monitoring with RESET (Active Low)
    • Programmable EN/UVLO Threshold
    • Overtemperature Protection
    • High Industrial -40°C to +125°C Ambient Operating Temperature Range/ -40°C to +150°C Junction Temperature Range
MAX17634C
4.5V to 36V, 4.25A, High-Efficiency, Synchronous Step-Down DC-DC Converter
MAX17634A, MAX17634B, MAX17634C: Functional Diagram
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Documentation

Data Sheet 1

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Software Resources

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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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Evaluation Kits

MAX17634CEVKIT

Evaluation Kit for the MAX17634C 5V Output-Voltage Application

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Features and Benefits

  • Wide 6.5V to 36V Input Range
  • Programmed 5V Output, 4.25A Load Current
  • 400kHz Switching Frequency
  • EN/UVLO Input, Resistor-Programmable UVLO Threshold
  • Programmed 1ms Soft-Start Time
  • Selectable PWM, PFM, and DCM Modes
  • Open-Drain Active-Low RESET Output Pulled Up To 5V of INTVCC
  • Provision for External Frequency Synchronization
  • Overcurrent and Overtemperature Protection
  • Proven PCB Layout
  • Fully Assembled and Tested
  • Complies with CISPR22(EN55022) Class B Conducted and Radiated Emissions

Product Details

The MAX17634CEVKIT# 5V output evaluation kit (EV kit) provides a proven design to evaluate the MAX17634C high-voltage, high-efficiency, synchronous step-down DC-DC converter. The EV kit is preset for 5V output at load currents of 4.25A and features a 400kHz switching frequency for optimum efficiency and component size. The EV kit features an adjustable input undervoltage lockout, adjustable soft-start, open-drain active-low RESET signal, and external clock synchronization. EV kit specifications, settings, features and benefits are highlighted. The EV kit also provides 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 MAX17634 data sheet.

Applications

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

MAX17634AEVKIT

Evaluation Kit for the MAX17634A 3.3V Output-Voltage Application

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Features and Benefits

  • Wide 4.5V to 36V Input Range
  • Programmed 3.3V Output, 4.25A Load Current
  • 400kHz Switching Frequency
  • EN/UVLO Input, Resistor-Programmable UVLO Threshold
  • Programmed 1ms Soft-Start Time
  • Selectable PWM, PFM, and DCM Modes
  • Open-Drain Active-low RESET Output Pulled Up to 5V of INTVCC
  • Provision for External Frequency Synchronization
  • Overcurrent and Overtemperature Protection
  • Proven PCB Layout
  • Fully Assembled and Tested

Product Details

The MAX17634AEVKIT# 3.3V output evaluation kit (EV kit) provides a proven design to evaluate the MAX17634A high-voltage, high-efficiency, synchronous step-down DC-DC converter. The EV kit is preset for 3.3V output at load currents of 4.25A and features a 400kHz switching frequency for optimum efficiency and component size. The EV kit features an adjustable input undervoltage lockout, adjustable soft-start, open-drain active-low RESET signal, and external clock synchronization. EV kit specifications, settings, features and benefits are highlighted. The EV kit layout is optimized for thermal performance. For more details about the IC benefits and features, refer to the MAX17634 data sheet.

Applications

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

MAX17634BEVKIT

Evaluation Kit for the MAX17634B 5V Output-Voltage Application

Buy Now View Details

Features and Benefits

  • Wide 6.5V to 36V Input Range
  • Programmed 5V Output, 4.25A Load Current
  • 400kHz Switching Frequency
  • EN/UVLO Input, Resistor-Programmable UVLO Threshold
  • Programmed 1ms Soft-Start Time
  • Selectable PWM, PFM, and DCM Modes
  • Open-Drain Active-Low RESET Output Pulled Up To 5V of INTVCC
  • Provision for External Frequency Synchronization
  • Overcurrent and Overtemperature Protection
  • Proven PCB Layout
  • Fully Assembled and Tested

Product Details

The MAX17634BEVKIT# 5V output evaluation kit (EV kit) provides a proven design to evaluate the MAX17634B high-voltage, high-efficiency, synchronous step-down DC-DC converter. The EV kit is preset for 5V output at load currents of 4.25A and features a 400kHz switching frequency for optimum efficiency and component size. The EV kit features an adjustable input undervoltage lockout, adjustable soft-start, open-drain active-low RESET signal, and external clock synchronization. EV kit specifications, settings, features and benefits are highlighted. The EV kit layout is optimized for thermal performance. For more details about the IC benefits and features, refer to the MAX17634 data sheet.

Applications

  • Base Station Power Supplies
  • Distributed Supply Regulation
  • General-Purpose Point-of-Load
  • High-Voltage, Single-Board Systems
  • Industrial Control Power Supplies
  • Wall Transformer Regulation
MAX17634CEVKIT
Evaluation Kit for the MAX17634C 5V Output-Voltage Application
MAX17634AEVKIT
Evaluation Kit for the MAX17634A 3.3V Output-Voltage Application
MAX17634BEVKIT
Evaluation Kit for the MAX17634B 5V Output-Voltage Application

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