MAX17644

PRODUCTION

4.5V to 36V, 2.7A, High-Efficiency, Synchronous Step-Down DC-DC Converter

Wide Input Voltage, 2.7A Internal FET Synchronous Buck Converter Ideal for Industrial Applications

Data Sheet (Rev. 0) Product Selection Table
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Overview

  • 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 Voltage Range from 0.9V up to 90% of VIN
    • Delivers up to 2.7A Over the Temperature Range
    • 400kHz to 2.2MHz Adjustable Frequency with External Clock Synchronization
    • Available in a 16-Pin, 3mm x 3mm TQFN Package
  • Reduces Power Dissipation
    • Peak Efficiency of 95.41%
    • 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 Active-Low RESET
    • Programmable EN/UVLO Threshold
    • Overtemperature Protection
    • CISPR32 Class B Compliant
    • Wide -40°C to +125°C Ambient Operating Temperature Range/-40°C to +150°C Junction Temperature Range
MAX17644
4.5V to 36V, 2.7A, High-Efficiency, Synchronous Step-Down DC-DC Converter
MAX17644 Block Diagram MAX17644 Circuit Diagram MAX17644 Pin Configuration
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Documentation

Data Sheet 1

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Tools & Simulations

ADI Power Studio™ Designer

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SIMPLIS Models 1

Evaluation Kits

MAX17644AEVKIT

Evaluation Kit for the MAX17644 in 3.3V and 5V Output-Voltage Applications

Buy Now View Details

Features and Benefits

  • Wide 4.5V to 36V Input Voltage Range
  • MAX17644AEVKIT# Offers High 87.28% Efficiency (VIN1 = 24V, VOUT1 = 3.3V, IOUT1 = 2.7A)
  • MAX17644BEVKIT# Offers High 90.77% Efficiency (VIN2 = 24V, VOUT2 = 5V, IOUT2 = 2.7A)
  • MAX17644C5EVKIT# Offers High 90.77% Efficiency (VIN3 = 24V, VOUT3 = 5V, IOUT3 = 2.7A)
  • Enable/UVLO Input, Resistor-Programmable UVLO Threshold
  • Selectable PWM, PFM, and DCM Modes of Operation
  • Adjustable Soft-Start Time
  • Active-Low RESET Outputs, with Pullup Resistor to Respective VCC
  • Provision to Synchronize the Converters to an External Clock Source
  • Overcurrent and Overtemperature Protection
  • Proven PCB Layout
  • Fully Assembled and Tested
  • Complies with CISPR32 (EN55032) Class B Conducted and Radiated Emissions

Product Details

The MAX17644 evaluation kit (comprising the MAX17644AEVKIT#, MAX17644BEVKIT#, and MAX17644C5EVKIT# EV kits) provides proven designs to evaluate the MAX17644A, MAX17644B, and MAX17644C high-efficiency, high-voltage Himalaya synchronous DC-DC converters.

The MAX17644AEVKIT# EV kit delivers up to 2.7A, with a fixed 3.3V output (VOUT1). The EV kit is configured to operate at 500kHz (fSW1) switching frequency over a 4.5V to 36V input voltage range.

The MAX17644BEVKIT# EV kit delivers up to 2.7A, with a fixed 5V output (VOUT2). The EV kit is configured to operate at 500kHz (fSW2) switching frequency over a 6.5V to 36V input voltage range.

The MAX17644C5EVKIT# EV kit delivers up to 2.7A, with a configured 5V output (VOUT3). The EV kit is also configured to operate at 500kHz (fSW3) switching frequency over a 6.5V to 36V input voltage range.

The EV kits are configured to demonstrate the optimum performance and component size. The EV kits provide provisions for enable/disable settings and selecting the modes of operation (pulse-width modulation/pulsefrequency modulation/discontinuous-conduction mode [PWM/PFM/DCM]). The EV kits feature programmable input undervoltage-lockout (UVLO), adjustable soft-start, open-drain active-low RESET signal, and external clock synchronization. The EV kits also provide a good layout example, which is optimized for conducted, radiated EMI, and thermal performance. For more details, refer to the Benefits and Features section in the MAX17644 IC 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

MAX17644BEVKIT

Evaluation Kit for the MAX17644 in 3.3V and 5V Output-Voltage Applications

Buy Now View Details

Features and Benefits

  • Wide 4.5V to 36V Input Voltage Range
  • MAX17644AEVKIT# Offers High 87.28% Efficiency (VIN1 = 24V, VOUT1 = 3.3V, IOUT1 = 2.7A)
  • MAX17644BEVKIT# Offers High 90.77% Efficiency (VIN2 = 24V, VOUT2 = 5V, IOUT2 = 2.7A)
  • MAX17644C5EVKIT# Offers High 90.77% Efficiency (VIN3 = 24V, VOUT3 = 5V, IOUT3 = 2.7A)
  • Enable/UVLO Input, Resistor-Programmable UVLO Threshold
  • Selectable PWM, PFM, and DCM Modes of Operation
  • Adjustable Soft-Start Time
  • Active-Low RESET Outputs, with Pullup Resistor to Respective VCC
  • Provision to Synchronize the Converters to an External Clock Source
  • Overcurrent and Overtemperature Protection
  • Proven PCB Layout
  • Fully Assembled and Tested
  • Complies with CISPR32 (EN55032) Class B Conducted and Radiated Emissions

Product Details

The MAX17644 evaluation kit (comprising the MAX17644AEVKIT#, MAX17644BEVKIT#, and MAX17644C5EVKIT# EV kits) provides proven designs to evaluate the MAX17644A, MAX17644B, and MAX17644C high-efficiency, high-voltage Himalaya synchronous DC-DC converters.

The MAX17644AEVKIT# EV kit delivers up to 2.7A, with a fixed 3.3V output (VOUT1). The EV kit is configured to operate at 500kHz (fSW1) switching frequency over a 4.5V to 36V input voltage range.

The MAX17644BEVKIT# EV kit delivers up to 2.7A, with a fixed 5V output (VOUT2). The EV kit is configured to operate at 500kHz (fSW2) switching frequency over a 6.5V to 36V input voltage range.

The MAX17644C5EVKIT# EV kit delivers up to 2.7A, with a configured 5V output (VOUT3). The EV kit is also configured to operate at 500kHz (fSW3) switching frequency over a 6.5V to 36V input voltage range.

The EV kits are configured to demonstrate the optimum performance and component size. The EV kits provide provisions for enable/disable settings and selecting the modes of operation (pulse-width modulation/pulsefrequency modulation/discontinuous-conduction mode [PWM/PFM/DCM]). The EV kits feature programmable input undervoltage-lockout (UVLO), adjustable soft-start, open-drain active-low RESET signal, and external clock synchronization. The EV kits also provide a good layout example, which is optimized for conducted, radiated EMI, and thermal performance. For more details, refer to the Benefits and Features section in the MAX17644 IC 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

MAX17644C5EVKIT

Evaluation Kit for the MAX17644 in 3.3V and 5V Output-Voltage Applications

Buy Now View Details

Features and Benefits

  • Wide 4.5V to 36V Input Voltage Range
  • MAX17644AEVKIT# Offers High 87.28% Efficiency (VIN1 = 24V, VOUT1 = 3.3V, IOUT1 = 2.7A)
  • MAX17644BEVKIT# Offers High 90.77% Efficiency (VIN2 = 24V, VOUT2 = 5V, IOUT2 = 2.7A)
  • MAX17644C5EVKIT# Offers High 90.77% Efficiency (VIN3 = 24V, VOUT3 = 5V, IOUT3 = 2.7A)
  • Enable/UVLO Input, Resistor-Programmable UVLO Threshold
  • Selectable PWM, PFM, and DCM Modes of Operation
  • Adjustable Soft-Start Time
  • Active-Low RESET Outputs, with Pullup Resistor to Respective VCC
  • Provision to Synchronize the Converters to an External Clock Source
  • Overcurrent and Overtemperature Protection
  • Proven PCB Layout
  • Fully Assembled and Tested
  • Complies with CISPR32 (EN55032) Class B Conducted and Radiated Emissions

Product Details

The MAX17644 evaluation kit (comprising the MAX17644AEVKIT#, MAX17644BEVKIT#, and MAX17644C5EVKIT# EV kits) provides proven designs to evaluate the MAX17644A, MAX17644B, and MAX17644C high-efficiency, high-voltage Himalaya synchronous DC-DC converters.

The MAX17644AEVKIT# EV kit delivers up to 2.7A, with a fixed 3.3V output (VOUT1). The EV kit is configured to operate at 500kHz (fSW1) switching frequency over a 4.5V to 36V input voltage range.

The MAX17644BEVKIT# EV kit delivers up to 2.7A, with a fixed 5V output (VOUT2). The EV kit is configured to operate at 500kHz (fSW2) switching frequency over a 6.5V to 36V input voltage range.

The MAX17644C5EVKIT# EV kit delivers up to 2.7A, with a configured 5V output (VOUT3). The EV kit is also configured to operate at 500kHz (fSW3) switching frequency over a 6.5V to 36V input voltage range.

The EV kits are configured to demonstrate the optimum performance and component size. The EV kits provide provisions for enable/disable settings and selecting the modes of operation (pulse-width modulation/pulsefrequency modulation/discontinuous-conduction mode [PWM/PFM/DCM]). The EV kits feature programmable input undervoltage-lockout (UVLO), adjustable soft-start, open-drain active-low RESET signal, and external clock synchronization. The EV kits also provide a good layout example, which is optimized for conducted, radiated EMI, and thermal performance. For more details, refer to the Benefits and Features section in the MAX17644 IC 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
MAX17644AEVKIT
Evaluation Kit for the MAX17644 in 3.3V and 5V Output-Voltage Applications
MAX17644BEVKIT
Evaluation Kit for the MAX17644 in 3.3V and 5V Output-Voltage Applications
MAX17644C5EVKIT
Evaluation Kit for the MAX17644 in 3.3V and 5V Output-Voltage Applications

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