MAX25239
Info : RECOMMENDED FOR NEW DESIGNS
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MAX25239

Automotive 2V to 36V, 6A Buck-Boost Converters

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Industry's only 6A Automotive Buck-Boost with Integrated H-Bridge Switches

Info : RECOMMENDED FOR NEW DESIGNS tooltip
Info : RECOMMENDED FOR NEW DESIGNS tooltip
Part Details
Part Models 6
1ku List Price Starting From $3.10
Features
  • Meets Stringent Automotive Quality and Reliability Requirements
    • 2V to 36 Operating Input Voltage Range Allows Operation in Cold-Crank Conditions
    • Tolerates Input Transients up to 42V
    • EN Pin Compatible up to 42V
    • 8.2A/10A Typical Input Current Limit
    • Fixed and Adjustable Output Voltage Options
    • -40°C to +125°C Grade 1 Automotive Temperature Range
  • AEC-Q100 Qualified High Integration and Thermally Enhanced Package Reduces BOM Cost and Board Space
    • Integrated FETs H-Bridge Architecture
    • 2.1MHz/400kHz/200kHz Switching Frequency Options
    • Phase-Locked Loop (PLL) Frequency Synchronization
    • Thermally Enhanced, 22-Pin FC2QFN Package
  • Low Quiescent Current Meets Stringent OEM Current Requirements
    • 95μA Quiescent Current in Standby Mode
    • 10μA Maximum Shutdown Current
  • Reduced EMI Emissions at Switching Frequency
    • Spread-Spectrum Function Enabled/Disabled by SPS Pin
  • Protection Features Improve System Reliability
    • Supply Undervoltage Lockout and Thermal Protection
    • Output PGOOD Indicator, Overvoltage, and Short-Circuit Protection
Additional Details
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The MAX25239/MAX25240 are small, synchronous, buck-boost converters with integrated H-bridge switches. These ICs provide a fixed-output regulation voltage and an externally adjustable output voltage in the 3V to 20V range with an input voltage above, below, or equal to the output regulation voltage. The IC has typical 8.2A and 10A input current limit options and can support continuous load currents up to 6A depending on the input-to-output voltage ratio and operating frequency. It also has a wide input voltage range of 2V to 36V.  

The MAX25239/MAX25240 have three switching frequency options: 2.1MHz, 400kHz, and 200kHz. The 2.1MHz high switching frequency allows small external components and reduced output ripple, and guarantees no AM band interference, while the 400kHz or 200kHz switching frequency offers better efficiency and relieves the power consumption concern. The SYNC input allows three operation modes: skip mode with ultra-low quiescent current, forced fixed-frequency PWM operation, and synchronization to an external clock. The IC also includes spread-spectrum frequency modulation to minimize EMI interference.

The MAX25239/MAX25240 feature a power-OK (POK) indicator, undervoltage lockout, overvoltage protection, cycle-by-cycle current limit, and thermal shutdown. The ICs are available in a small, 4.25mm x 4.25mm x 0.75mm, 22-pin FC2QFN package.

Applications

  • ADAS ECU
  • Body Electronics
  • Infotainment Systems
  • Point-of-Load Power Supplies
  • Start-Stop Systems
Part Models 6
1ku List Price Starting From $3.10

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Documentation

Documentation

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Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
MAX25239AFFA/VY+
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MAX25239AFFA/VY+T
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MAX25239AFFB/VY+
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MAX25239AFFB/VY+T
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MAX25239AFFD/VY+
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MAX25239AFFD/VY+T
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Part Models

Product Lifecycle

PCN

Jan 10, 2023

- 2318

DESIGN

MAX25239AFFA/VY+

PRODUCTION

MAX25239AFFA/VY+T

PRODUCTION

MAX25239AFFB/VY+

PRODUCTION

MAX25239AFFB/VY+T

PRODUCTION

MAX25239AFFD/VY+

PRODUCTION

Filter by Model

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Part Models

Product Lifecycle

PCN

Jan 10, 2023

- 2318

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DESIGN

MAX25239AFFA/VY+

PRODUCTION

MAX25239AFFA/VY+T

PRODUCTION

MAX25239AFFB/VY+

PRODUCTION

MAX25239AFFB/VY+T

PRODUCTION

MAX25239AFFD/VY+

PRODUCTION

Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 1

MAX25240EVKIT

Evaluation Kit for the MAX25239, MAX25240

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MAX25240EVKIT

Evaluation Kit for the MAX25239, MAX25240

Evaluation Kit for the MAX25239, MAX25240

Features and Benefits

  • High-Voltage Step-Down Converters with Integrated
  • Power FETs to Minimize Board-Area-Occupancy
  • Seamless Transition Across buck and Boost Operating Regions
  • 4.5V to 40V Input Supply Range
  • Extended Input Range Down to 2V After Initial Startup
  • Provides 11.5V Output Up to 4.5A Output Current
  • Output Voltages Adjustable Between 3.3V and 20V Through External Resistors
  • ±2% Output Voltage Accuracy
  • Skip-Mode Operation to Maximize Efficiency During Light Load Conditions
  • Frequency-Synchronization Input
  • Spread Spectrum Enable Input
  • Buck-Boost Enable Input
  • Voltage-Monitoring PGOOD Output
  • Jumpers and Test Points on Key Nodes for Simplified Evaluation
  • Proven PCB Layout
  • Fully Assembled and Tested

Product Detail

The MAX25240 evaluation kit (EV kit) is a fully assembled and tested application circuit that simplifies the evaluation of the MAX25240 400MkHz, 36V buck-boost converter. All installed components are rated for the automotive temperature range. Various test points and jumpers are included for evaluation.

The standard EV kit comes with the MAX25240AFFF/VY+ installed (11.5V, 400kHz) and can also be used to evaluate other MAX25240 variants with minimal component changes shown in the MAX25240 EV Kit Bill of Materials.

Applications

  • ADAS ECU
  • Body Electronics
  • Infotainment Systems
  • Point-of-Load Power Supplies
  • Start-Stop Systems
Tools & Simulations

Tools & Simulations 1

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