MAX17671

PRODUCTION

Integrated 4V-60V, 150mA, High-Efficiency, Synchronous Step-Down DC-DC Converter with 50mA Linear Regulator

Highly Integrated Industrial PMIC Enables Small Solution Size

Data Sheet (Rev. 2) Product Selection Table
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Overview

  • Reduces External Components and Total Cost
    • No Schottky–Synchronous Operation
    • Internal Compensation
    • Built-In Soft-Start
    • All-Ceramic Capacitors, Compact Layout
    • Protection against Inductive Short at Step-Down Converter Output
  • Reduces Number of DC-DC Regulators to Stock
    • Wide 4V to 60V Input Range for the Step-Down Converter Regulator
    • Up to 98% Duty-Cycle Step-Down Operation
    • 200kHz to 2.2MHz Adjustable Switching Frequency with External Synchronization for Step-down Converter
    • 2.35V to 5.5V Input Range for the Linear Regulator
    • Linear Regulator with up to 50mA Load Current Capability
  • Reduces Power Dissipation
    • 50μA No-Load Supply Current
    • PFM Enables Enhanced Light-Load Efficiency
    • 2.5μA Shutdown Current
    • Bootstrap Bias Input for Improved Efficiency
  • Reliable Operation in Adverse Environments
    • Peak Current-Limit Protection
    • Built-In Output-Voltage Monitoring with active-low RESET
    • Resistor Programmable EN/UVLO Threshold
    • Monotonic Startup into Prebiased Load
    • Overtemperature Protection
    • High Industrial -40°C to +125°C Ambient Operating Temperature Range / -40°C to +150°C Junction Temperature Range
MAX17671
Integrated 4V-60V, 150mA, High-Efficiency, Synchronous Step-Down DC-DC Converter with 50mA Linear Regulator
MAX17670, MAX17671, MAX17672: Simplified Application Circuit
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Documentation

Data Sheet 1

Technical Articles 1

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Tools & Simulations

ADI Power Studio™ Designer

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SIMPLIS Models 1

Evaluation Kits

MAX17671FEVKIT

Evaluation Kit for the MAX17671 5V Step-Down Converter and 3.3V Linear Regulator Output Voltage Application

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Features and Benefits

  • 6.5V to 60V Input-Voltage Range for the Step-Down Converter
  • 5V Step-Down Converter Output Voltage, Up To 150mA Continuous Load Current
  • 3.3V Linear Regulator Output Voltage, Up To 50mA Continuous Load Current
  • Peak Efficiency of 90% for the Step-Down Converter
  • 70µA No-Load Supply Current
  • 200kHz Switching Frequency
  • Internal Soft-Start
  • EN/UVLO Input, Resistor-Programmable UVLO Threshold
  • MODE/SYNC Pin to Select PWM or PFM Mode
  • Open-Drain active-low RESET Output to Monitor Dual Outputs
  • External Frequency Synchronization
  • Overcurrent and Overtemperature Protection
  • Proven PCB Layout
  • Fully Assembled and Tested

Product Details

The MAX17671F evaluation kit (EV kit) is a fully assembled and tested circuit board that demonstrates the performance of the MAX17671F dual-output regulator integrating a high-efficiency, high voltage, fixed output voltage, synchronous step-down DC-DC converter, and a high-PSRR, low-noise, fixed-output linear regulator. The EV kit is designed for a high efficiency solution, and generates a 5V step-down converter output voltage and a fixed 3.3V linear regulator output voltage at load currents up to 150mA and 50mA, respectively. When the linear regulator output is loaded, the step-down converter output current is reduced by ILDO, where ILDO is the load current on the linear regulator output. The EV kit draws only 70μA supply current under no-load conditions. The step-down converter is programmed to a switching frequency of 200kHz and delivers a peak efficiency of 90% with the supplied components. The dual-output device is simple to use and easily configurable with minimal external components. The EV kit features adjustable input undervoltage lockout, open-drain active-low RESET signal, hysteretic peak current-limit protection and external frequency synchronization.

Applications

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

MAX17670EEVKIT

Evaluation Kit for the MAX17670 3.3V Step-Down Converter Output Voltage and 3.0V Linear Regulator Output Voltage Application

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Features and Benefits

  • 4.5V to 60V Input-Voltage Range for the Step-Down Converter
  • 3.3V Step-Down Converter Output Voltage, Up To 150mA Continuous Load Current
  • 3.0V Linear Regulator Output Voltage, Up To 20mA Continuous Load Current
  • Peak Efficiency of 90.6% for the Step-Down Converter
  • 70µA No-Load Supply Current
  • 200kHz Switching Frequency
  • Internal Soft-Start
  • EN/UVLO Input, Resistor-Programmable UVLO Threshold
  • MODE/SYNC Pin to Select PWM or PFM Mode
  • Open-Drain Active-Low RESET Output to Monitor Dual Outputs
  • External Frequency Synchronization
  • Overcurrent and Overtemperature Protection
  • Proven PCB Layout
  • Fully Assembled and Tested

Product Details

The MAX17670E evaluation kit (EV kit) is a fully assembled and tested circuit board that demonstrates the performance of the MAX17670E dual-output regulator integrating a high-efficiency, high voltage fixed output voltage, synchronous step-down DC-DC converter, and a high-PSRR, low-noise, fixed-output linear regulator. The EV kit is designed for a high efficiency solution. The EV kit generates a 3.3V step-down converter output voltage and a fixed 3.0V linear regulator output voltage at load currents up to 150mA and 20mA, respectively. When the linear regulator output is loaded, the Stepdown converter output current is reduced by ILDO, where ILDO is the load current on the linear regulator output. The EV kit draws only 70µA supply current under no-load conditions. The step-down converter is programmed to a switching frequency of 200kHz and delivers a peak efficiency of 90.6% with the supplied components. The dual-output device is simple to use and easily configurable with minimal external components. The EV kit features adjustable input undervoltage lockout, open-drain active-low RESET signal, hysteretic peak current-limit protection and external frequency synchronization..

Applications

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

MAX17672CEVKIT

Evaluation Kit for the MAX17672 5V Buck Output Voltage and 1.8V Linear Regulator Output Voltage

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Features and Benefits

  • 6.5V to 60V Input-Voltage Range for the Step-Down Converter
  • 5V Step-Down Converter Output Voltage, Up To 150mA Continuous Load Current
  • 1.8V Linear Regulator Output Voltage, Up To 50mA Continuous Load Current
  • Peak Efficiency of 90.2% for the Step-Down Converter
  • 120μA No-Load Supply Current
  • 600kHz Switching Frequency
  • Internal Soft-Start
  • EN/UVLO Input, Resistor-Programmable UVLO Threshold
  • MODE/SYNC Pin to Select PWM or PFM Mode
  • Open-Drain Active-low RESET Output to Monitor Dual Outputs
  • External Clock 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 MAX17672CEVKIT# evaluation kit (EV kit) is a fully assembled and tested circuit board that demonstrates the performance of the MAX17672C dual-output regulator integrating a high-efficiency, high voltage, adjustable output voltage, synchronous step-down DC-DC converter, and a high-PSRR, low-noise, fixed-output linear regulator. The EV kit is designed for a balanced size and efficiency solution and generates a 5V step-down converter output voltage and a fixed 1.8V linear regulator output voltage at load currents up to 150mA and 50mA, respectively. When the linear regulator output is loaded, the step-down converter output current is reduced by ILDO, where ILDO is the load current on the linear regulator output in mA. The EV kit draws only 120μA supply current under no-load conditions. The step-down converter is programmed to a switching frequency of 600kHz and delivers a peak efficiency of 90.2% with the supplied components. The dualoutput device is simple to use and easily configurable with minimal external components. The EV kit features adjustable input undervoltage lockout, open-drain active-low RESET signal, hysteretic peak current-limit protection and external clock synchronization. The EV kit also provides a good layout example, which is optimized for conducted and radiated EMI. For more details about the IC benefits and features, refer to the MAX17672 IC data sheet

Applications

  • Battery-Powered Equipment
  • High-Voltage Linear Regulator Replacement
  • HVAC and Building Control
  • Industrial Sensors and Process Control
MAX17671FEVKIT
Evaluation Kit for the MAX17671 5V Step-Down Converter and 3.3V Linear Regulator Output Voltage Application
MAX17670EEVKIT
Evaluation Kit for the MAX17670 3.3V Step-Down Converter Output Voltage and 3.0V Linear Regulator Output Voltage Application
MAX17672CEVKIT
Evaluation Kit for the MAX17672 5V Buck Output Voltage and 1.8V Linear Regulator Output Voltage

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