MAX17574

4.5V–60V, 3A, High-Efficiency, Synchronous Step-Down DC-DC Converter with Internal Compensation

Industry's Only 60V, 3A Internal FET Synchronous Buck Converter


Please check latest availability status for a specific part variant.

Description

The MAX17574, high-efficiency, high-voltage, synchronous step-down DC-DC converter with integrated MOSFETs operates over a 4.5V to 60V input. The converter can deliver up to 3A current. Output voltage is programmable from 0.9V up to 90%VIN. The feedback voltage regulation accuracy over -40°C to +125°C is ±0.9%.

The MAX17574 features a peak-current-mode control architecture. The device can be operated in the pulse-width modulation (PWM), pulse-frequency modulation (PFM) or discontinuous-conduction mode (DCM) control schemes. A programmable soft-start feature allows users to reduce input inrush current. The device also incorporates an output enable/undervoltage lockout pin (EN/UVLO) that allows the user to turn on the part at the desired input voltage level. An open-drain active-low RESET pin provides a delayed power-good signal to the system upon achieving successful regulation of the output voltage.

The MAX17574 is available in a 24-pin (4mm x 5mm) TQFN package. Simulation models are available.

Design Solution: Design 20W–30W Power Supplies with Over 90% Efficiency for 24V+ Industrial Automation Systems ›

MAX17574:Typical Application Ciruit MAX17574: Typical Application Circuit Enlarge+

Key Features

  • Reduces External Components and Total Cost
    • No Schottky-Synchronous Operation
    • Internal Compensation for Any Output Voltage
    • All-Ceramic Capacitors, Compact Layout
  • Reduces Number of DC-DC Regulators to Stock
    • Wide 4.5V to 60V Input
    • Adjustable Output Voltage Range from 0.9V up to 90% of VIN
    • Delivers up to 3A Current Over Temperature
    • 100kHz to 2.2MHz Adjustable Switching Frequency with External Synchronization
  • Reduces Power Dissipation
    • Peak Efficiency > 90%
    • PFM and DCM Modes Enable Enhanced Light-Load Efficiency
    • Auxiliary Bootstrap LDO for Improved Efficiency
    • 2.8μA Shutdown Current
  • Operates Reliably in Adverse Industrial Environments
    • Hiccup Mode Overload Protection
    • Adjustable Soft-Start and Prebiased Power-Up
    • Built-In Output-Voltage Monitoring with Active-Low RESET
    • 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

Applications/Uses

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

See parametric specs for Step-Down Switching Regulators (408)


Part NumberVIN
(V)
VIN
(V)
VOUT1
(V)
VOUT1
(V)
Output Adjust. MethodIOUT1
(A)
Switch TypeSynchronous SwitchingPower Good SignalDC-DC OutputsOper. Freq.
(kHz)
Design ToolsPackage/PinsBudgetary
Price
minmaxminmaxmaxSee Notes
MAX17574 4.5600.954Resistor3InternalYesYes12200EE-Sim
TQFN/24
$2.30 @1k

Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

MAX17574EVKITA: Evaluation Kit for the MAX17574 in 3.3V Output-Voltage Application
MAX17574EVKITB: Evaluation Kit for the MAX17574 in 5V Output-Voltage Application
MAX17574EVKITBE: Evaluation Kit for the MAX17574 5V Output-Voltage Application

Tools & Models

  • EE-Sim: Design & Simulate MAX17574
  • MAX17574 SIMPLIS Schematic
  • Request Reliability Report for: MAX17574 
    Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C   Material Composition  

    Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

    Quality Management System >
    Environmental Management System >

     
    Status:
    Package:
    Temperature:

    Related Resources


    MAX20710
    Integrated, Step-Down Switching Regulator with PMBus

    • High Power Density and Low Component Count
    • Optimized Component Performance and Efficiency with Reduced Design-In Time
    • Increased Power-Supply Reliability with System and IC Self-Protection Features

    MAX17760
    4.5V to 76V, 300mA, High-Efficiency, Synchronous Step-Down DC-DC Converter

    • Reduces External Components and Total Cost
    • Reduces Number of DC-DC Regulators to Stock
    • Reduces Power Dissipation

    MAX20430
    Four-Output Mini PMIC for Safety Applications

    • Multiple Functions for Small Size
    • High-Precision for ASIL Applications
    • Diagnostics and Redundant Circuits

    MAX18166
    High-Efficiency, 4A, Step-Down DC-DC Regulator with Internal Power Switches

    • Feature Integration Shrinks Solution Size
    • High Efficiency Conserves Power
    • Safe, Reliable, Accurate Operation

    MAX18066
    High-Efficiency, 4A, Step-Down DC-DC Regulator with Internal Power Switches

    • Feature Integration Shrinks Solution Size
    • High Efficiency Conserves Power
    • Safe, Reliable, Accurate Operation

    MAX77511
    10V Input, Quad-Phase Configurable, 3A/Phase, High-Efficiency Buck Converter

    • 3A/Phase Configurable Buck Regulator
    • 2.3V to 10V Input Voltage Range
    • 0.25V to 5.2V Output Voltage Range

    MAX77711
    10V Input, Quad-Phase Configurable, 3A/Phase, High-Efficiency Buck Converter

    • 3A/Phase Configurable Buck Regulator
    • 2.3V to 10V Input Voltage Range
    • 0.25V to 5.2V Output Voltage Range

    MAX15158, MAX15158A
    High-Voltage Multiphase Boost Controller

    • Wide Operating Range
    • Integration Reduces Design Footprint
    • Robust Fault Protection Improves Quality and Reliability

    MAX15158A
    High-Voltage Multiphase Boost Controller

    • Wide Operating Range
    • Integration Reduces Design Footprint
    • Robust Fault Protection Improves Quality and Reliability

    MAX25201
    36V Automotive Low-IQ 200kHz to 2.2MHz Synchronous Boost Controller

  • Meets Stringent OEM Module Power Consumption and Performance Specifications
    • 20µA Quiescent Current in Skip Mode
    • ±1.5% FB Voltage Accuracy
    • Output Voltage Range: Fixed or Adjustable Between 3.5V and 60V
  • Enables Crank-Ready Designs
    • Operates Down to 1.8V After Startup
    • Wide Input Supply Range from 4.5V to 36V
  • EMI Reduction Features Reduce Interference with Sensitive Radio Bands Without Sacrificing Wide Input Voltage Range
    • Spread-Spectrum Option
    • Frequency-Synchronization Input
    • Resistor-Programmable Frequency Between 200kHz and 2.2MHz

  • MAX25202
    36V Automotive Low-IQ 200kHz to 2.2MHz Synchronous Boost Controller

  • Meets Stringent OEM Module Power Consumption and Performance Specifications
    • 20µA Quiescent Current in Skip Mode
    • ±1.5% FB Voltage Accuracy
    • Output Voltage Range: Fixed or Adjustable Between 3.5V and 60V
  • Enables Crank-Ready Designs
    • Operates Down to 1.8V After Startup
    • Wide Input Supply Range from 4.5V to 36V
  • EMI Reduction Features Reduce Interference with Sensitive Radio Bands Without Sacrificing Wide Input Voltage Range
    • Spread-Spectrum Option
    • Frequency-Synchronization Input
    • Resistor-Programmable Frequency Between 200kHz and 2.2MHz

  • MAX25200
    36V Automotive Low-IQ 200kHz to 2.2MHz Sepic/Flyback Controller

  • Meets Stringent OEM Module Power Consumption and Performance Specifications
  • 20μA Quiescent Current in Skip Mode
  • ±1.5% FB Voltage Accuracy

  • MAX20499
    Automotive Core Power Supply 5V, 8A/12A Step-Down Converter

  • High-Efficiency DC-DC Converter
  • Up to 12A peak output current:
    • MAX20499A: 8A
    • MAX20499B: 12A
  • Differential Remote Voltage Sensing

  • MAX20075D
    36V, 600mA/1.2A Mini Buck Converter with 3.5µA IQ

    • Synchronous DC-DC Converter with Integrated FETs
    • 20ns Minimum On-Time Small Solution Size Saves Space
    • PGOOD Output and High-Voltage EN Input Simplify Power Sequencing

    MAX20076D
    36V, 600mA/1.2A Mini Buck Converter with 3.5µA IQ

    • Synchronous DC-DC Converter with Integrated FETs
    • 20ns Minimum On-Time Small Solution Size Saves Space
    • PGOOD Output and High-Voltage EN Input Simplify Power Sequencing

    MAX20076E
    36V, 600mA/1.2A Mini Buck Converter with 3.5µA IQ

    • Synchronous DC-DC Converter with Integrated FETs
    • 20ns Minimum On-Time Small Solution Size Saves Space
    • PGOOD Output and High-Voltage EN Input Simplify Power Sequencing

    MAX25276D
    36V, 600mA/1.2A Mini Buck Converter with 3.5µA IQ

    • Synchronous DC-DC Converter with Integrated FETs
    • 20ns Minimum On-Time Small Solution Size Saves Space
    • PGOOD Output and High-Voltage EN Input Simplify Power Sequencing

    MAXM17724
    Integrated 4V-60V, 150mA, Himalaya uSLIC Power Module DC-DC Converter with 50mA Linear Regulator

    • Easy to Use
    • High Efficiency
    • Flexible Design

    MAXM17720
    Integrated 4V-60V, 150mA, Himalaya uSLIC Power Module DC-DC Converter with 50mA Linear Regulator

    • Easy to Use
    • High Efficiency
    • Flexible Design

    MAXM17712
    Integrated 4V-60V, 150mA, Himalaya uSLIC Power Module DC-DC Converter with 50mA Linear Regulator

    • Easy to Use
    • High Efficiency
    • Flexible Design

    MAXM15068
    7.5V to 60V, 200mA Himalaya uSLIC Step-Down Power Module

    • Easy to Use
    • High Efficiency
    • Flexible Design

    MAXM17634
    4.5V to 36V, 2A Himalaya uSLIC Step-Down Power Modules

    • Easy to Use
    • High Efficiency
    • Flexible Design

    MAXM17635
    4.5V to 36V, 2A Himalaya uSLIC Step-Down Power Modules

    • Easy to Use
    • High Efficiency
    • Flexible Design

    MAXM17633
    4.5V to 36V, 2A Himalaya uSLIC Step-Down Power Modules

    • Easy to Use
    • High Efficiency
    • Flexible Design

    MAXM17537
    4.5V to 60V, 3A High-Efficiency, DC-DC Step-Down SiP Power Module with Integrated Inductor

    • Reduces Design Complexity, Manufacturing Risks, and Time to Market
    • Saves Board Space in Space-Constrained Applications
    • Offers Flexibility for Power-Design Optimization

    MAXM17631
    4.5V to 36V, 1A Himalaya uSLIC Step-Down Power Module

    • Easy to Use
    • High Efficiency
    • Flexible Design

    MAXM17632
    4.5V to 36V, 1A Himalaya uSLIC Step-Down Power Module

    • Easy to Use
    • High Efficiency
    • Flexible Design

    MAXM17630
    4.5V to 36V, 1A Himalaya uSLIC Step-Down Power Module

    • Easy to Use
    • High Efficiency
    • Flexible Design

    MAX20473
    Low-Voltage Synchronous Boost Converter

    • Synchronous Boost Converter
    • 3.0V to 4.0V Operating Supply Voltage
    • True Output Shutdown