MAX17673A
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MAX17673A

Integrated 4.5V to 60V Synchronous 1.5A HV Buck and Dual 2.7V to 5.5V, 1A Buck Regulators

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Industry's First 60V Capable, Multi-Output PMIC

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SIMPLIS Models MAX17673A SIMPLIS Schematic Download 751.33KB
Part Models 2
1ku List Price Starting From $3.48
Features
  • Reduces External Components and Total Cost
    • Synchronous Operation for High Efficiency
    • Internal Compensation for a Wide Output Voltage Range
    • All-Ceramic Capacitors,Compact Layout
  • Integrates Three DC-DC Regulators
    • Wide 4.5V to 60V Input Voltage Range for the HV Regulator. 2.7V to 5.5V Input Range for LV Regulators.
    • Adjustable 0.9V to 5.5V Output for the HV Regulator and 0.75V up to 4.8V Output for LV Regulators
    • Delivers up to 1.5A Load Current for the HV Regulator and 1A Load Current for LV Regulators
    • Adjustable Switching Frequency: 250KHz to 800KHz for HV Regulator and 1MHz to 4MHz for LV Regulators
    • Programmable LV / HV Switching Frequency Ratio (2, 3, 4, 5, 6, 7, 8)
    • EN/UVLO for HV buck and EN for LV regulators
  • Reduces Power Dissipation
    • 550μA in PFM and 10.2mA in PWM Mode Quiescent Current
    • Peak Efficiency > 92%
    • Auxiliary Bootstrap LDO for Improved Efficiency
    • PFM Mode for High Light-Load Efficiency
    • 7.4µA Shutdown Current
  • Operates Reliably in Adverse Industrial Environments
    • Peak-Current Limit Protection
    • Hiccup Mode Overload Protection
    • Soft-Start Reduces Inrush Current During Startup (Adjustable for HV Regulator)
    • Built-In Output-Voltage Monitoring with POKH, POKA, and POKB
    • Monotonic Startup into Prebiased Load
    • Overtemperature Protection
    • Dynamic Mode Change for On-the-Fly Shift Between PFM and PWM Mode
    • -40°C to +125°C Operating Temperature Range
    • Complies with CISPR22(EN55022) Class B Conducted and Radiated Emissions
Additional Details
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MAX17673 Samples

MAX17673/MAX17673A power management integrated circuits (PMIC) integrate a 60V high voltage (HV), high efficiency synchronous DC-DC buck regulator and two 5.5V high efficiency synchronous DC-DC buck regulators. All three regulators offer integrated power MOSFETs.

The HV regulator operates from a 4.5V to 60V input voltage range and the LV regulators operate from a 2.7V to 5.5V input voltage range. The HV regulator supports load currents up to 1.5A, and can regulate output voltages from 0.9V to 5.5V. The LV regulators support load currents up to 1A, and can regulate output voltages from 0.75V to 4.8V.

MAX17673/MAX17673A offer independent peak current mode control, hiccup mode overcurrent protection, ENABLE input and Power OK signal in the three regulators. The switching frequency is adjustable between 1MHz and 4MHz in the LV regulators, and the HV regulator can be programmed to run at a fractional switching frequency of the LV regulators. The HV regulator offers an adjustable soft-start function, while the LV regulators present internally fixed soft-start. Users can choose to operate the devices in either pulse frequency modulation (PFM) or forced pulse width modulation (PWM) scheme.

The devices are available in a 28-pin, 5mm x 5mm TQFN package and operates over a -40°C to +125°C temperature range.

Applications

  • Base Station Power Supplies
  • Distributed Supply Regulation
  • FPGA/CPLD Power Supplies
  • High Voltage Single Board Systems
  • Industrial Control Power Supplies
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file View Data Sheet (Rev.2)
Documentation View All Documentation
SIMPLIS Models MAX17673A SIMPLIS Schematic Download 751.33KB
Part Models 2
1ku List Price Starting From $3.48
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MAX17673A

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UPDATED 04/10/2020
English

MAX17673-MAX17673A: Integrated 4.5V to 60V Synchronous 1.5A HV Buck and Dual 2.7V to 5.5V, 1A Buck Regulators Data Sheet (Rev.2)

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Documentation

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
MAX17673AATI+ 28-LFCSP-5X5X0.75 external-link
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MAX17673AATI+T 28-LFCSP-5X5X0.75 external-link
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Software & Part Ecosystem

Evaluation Kits 2

MAX17673EVKIT

Evaluation Kit for the MAX17673 5V, 3.3V, 1.8V Output Applications

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MAX17673EVKIT

Evaluation Kit for the MAX17673 5V, 3.3V, 1.8V Output Applications

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Download

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Print
MAX17673EVKIT
Evaluation Kit for the MAX17673 5V, 3.3V, 1.8V Output Applications

Features and Benefits

  • Three Synchronous DC-DC Buck Converter Outputs from a Single HV input
  • Wide 7V to 60V Input Range for HV Converter
  • Optional External Supply Input connections for LV Converters (4.5V to 5.5V for LVA, and 2.7V to 5.5V for LVB)
  • Programmed 5V/1.5A Output for HV Buck and 3.3V/1A & 1.8V/1A Output for LV Buck Converters
  • 400KHz Switching Frequency for HV Buck and 2MHz Switching Frequency for LV Buck
  • High 93% Efficiency (VINH = 12V, VOUT = 5V at 0.45A) for HV Buck. 94% Efficiency for LV Buck
  • Enable/UVLO Input, Resistor-Programmable UVLO Threshold for HV Buck Converter
  • Programmed 1ms Soft-Start Time for HV Buck Converter, and Internal 4096 Clock Cycles Soft-Start Time for LV Buck Converters
  • Selectable PWM and PFM Modes of Operation
  • Independent Power OK (POK_) Outputs for the Three Converters
  • Overcurrent and Overtemperature Protection
  • Low-Profile, Surface-Mount Components
  • Proven PCB Layout
  • Fully Assembled and Tested
Buy Now View Details

Product Detail

The MAX17673EVKIT# evaluation kit (EV kit) provides a proven design to evaluate the MAX17673 60V, 1.5A high efficiency, synchronous buck converter with integrated, dual 5V, 1A buck converters. The EV kit is preset for 5V output at a load current of up to 1.5A from the high voltage (HV) buck converter, and 3.3V and 1.8V outputs at load currents up to 1A each from the low voltage (LV) buck converters. The HV buck converter is programmed to operate at 400kHz, and the LV buck converters are programmed to operate at 2MHz, for optimum efficiency and component sizes. The output of the HV buck converter is connected to the input of the LV buck converters. The EV kit features adjustable input undervoltage lockout and soft-start for the HV buck converter, and Power OK (POK_) signals for all three buck converters. The MAX17673 IC data sheet provides a complete description of the part that should be read in conjunction with this data sheet prior to operating the EV kit.

Applications

  • Base Station Power Supplies
  • Distributed Supply Regulation
  • FPGA/CPLD Power Supplies
  • High Voltage Single Board Systems
  • Industrial Control Power Supplies

Resources

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MAX17673EVKIT ODB File - Design Files Download

5.80M

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MAX17673AEVKIT

Evaluation Kit for the MAX17673A 5V, 3.3V, 1.8V Output Applications

zoom

MAX17673AEVKIT

Evaluation Kit for the MAX17673A 5V, 3.3V, 1.8V Output Applications

download icon

Download

 print icon

Print
MAX17673AEVKIT
Evaluation Kit for the MAX17673A 5V, 3.3V, 1.8V Output Applications

Features and Benefits

  • Three Synchronous DC-DC Buck Converter Outputs from a Single HV Input
  • Wide 7V to 60V Input Range for HV Buck Converter
  • Optional External Supply Input Connections for LV Buck Converters (4.5V to 5.5V for LVA, and 2.7V to 5.5V for LVB)
  • Programmed 5V/1.5A Output for HV Buck Converter and 3.3V/1A and 1.8V/1A Output for LV Buck Converters
  • 400kHz Switching Frequency for HV Buck Converter and 2MHz Switching Frequency for LV Buck Converters
  • High 93% Efficiency (VINH = 12V, VOUT = 5V at 0.45A) for HV Buck Converter; 94% Efficiency (VIN = 5V, VOUT = 3.3V at 0.5A) for LV Buck Converters
  • Enable/UVLO Input, Resistor-Programmable UVLO Threshold for HV Buck Converter
  • Programmed 1ms Soft-Start Time for HV Buck Converter, and Internal 4096 Clock Cycles Soft-Start Time for LV Buck Converters
  • Selectable PWM and PFM Modes of Operation
  • External Clock Synchronization
  • Independent Power-OK (POK_) Outputs for the Three Buck Converters
  • Overcurrent and Overtemperature Protection
  • Low-Profile, Surface-Mount Components
  • Proven PCB Layout
  • Fully Assembled and Tested
  • Complies with CISPR 22 (EN 55022) Class B Conducted and Radiated Emissions Limits
Buy Now View Details

Product Detail

The MAX17673AEVKIT# evaluation kit (EV kit) provides a proven design to evaluate the MAX17673A 60V, 1.5A high efficiency, synchronous buck converter with integrated, dual 5.5V, 1A buck converters. The EV kit is preset for 5V output at a load current of up to 1.5A from the highvoltage (HV) buck converter, and 3.3V and 1.8V outputs at load currents up to 1A each from the low-voltage (LV) buck converters. The HV buck converter is programmed to operate at 400kHz, and the LV buck converters are programmed to operate at 2MHz, for optimum efficiency and component sizes. The output of the HV buck converter is connected to the input of the LV buck converters. The EV kit features adjustable input undervoltage lockout and soft-start for the HV buck converter, and power- OK (POK_) signals for all three buck converters. The MAX17673/MAX17673A IC data sheet provides a complete description of the part that should be read in conjunction with this data sheet prior to operating the EV kit.

Applications

  • Base Station Power Supplies
  • Distributed Supply Regulation
  • FPGA/CPLD Power Supplies
  • High Voltage Single Board Systems
  • Industrial Control Power Supplies

Resources

pdf icon

ZIP

MAX17673AEVKIT ODB Files - Design Files Download

1.62M

Show More Arrow image

Evaluation Kits2

MAX17673EVKIT

Evaluation Kit for the MAX17673 5V, 3.3V, 1.8V Output Applications

MAX17673AEVKIT

Evaluation Kit for the MAX17673A 5V, 3.3V, 1.8V Output Applications

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