MAX25431
Info: : PRODUCTION
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MAX25431

Automotive 40V, 2.2MHz, H-Bridge Buck-Boost Controller

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Industry's Lowest IQ Buck-Boost Controller with Best in Class Transient Response

Info: : PRODUCTION tooltip
Info: : PRODUCTION tooltip
Part Details
Part Models 4
1ku List Price Starting From $0.81
Features
  • Meets Stringent Automotive Quality and Reliability Requirements
    • Operating VIN Range: 2V to 36V Allows Operation in Cold-Crank Conditions
    • Tolerates Input Transients to 40V
    • EN Pin Compatible from +3.3V to +40V
    • -40°C to +125°C Automotive Temperature Range
    • AEC-Q100 Qualified
  • Efficient Solution in a Small Solutions Size
    • Fixed 5V Output Voltage and Adjustable 3V to 25V
    • High Switching Frequency Allows Use of Small External Components
    • Small 4mm x 4mm 24-Pin SWTQFN Package
  • Low Quiescent Current Helps Designers Meet Stringent OEM Current Requirements
    • 10µA (max) Quiescent Current in Shutdown
  • EMI Mitigation to meet CISPR25 Class 5 Requirements
    • 220kHz to 2.2MHz Operating Frequency
    • Fixed-Frequency PWM Mode
    • External Frequency Synchronization or SYNC OUT Capability
Additional Details
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The MAX25431 is a current-mode buck-boost controller. The device operates with input voltages from 6V to 36V. The switching frequency is resistor programmable from 220kHz to 2.2MHz and can be synchronized to an external clock..

The device output voltage is available as 5V fixed or adjustable from 4V to 25V. The wide input voltage range, along with its ability to maintain constant output voltage during battery transients, makes the device ideal for automotive applications. In light load applications, a logic input (FSYNC) allows the devices to operate in fixed-frequency, forced-PWM mode to eliminate frequency variaion and help minimize EMI. Protection features include cycle-by-cycle current limit followed by hiccup during sustained overloads, input under-voltage lockout (UVLO), out- put overvoltage protection and thermal shut- down with automatic recovery.

The MAX25431 is available in a small 4mm x 4mm 24-pin TQFN-EP SW package.

Applications

  • Dedicated Charging Modules
  • Rear-Seat Entertainment Modules
  • USB Hubs, Breakout Boxes and Multimedia Hubs
Part Models 4
1ku List Price Starting From $0.81

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
MAX25431ATGA/VY+
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MAX25431ATGA/VY+T
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MAX25431ATGB/VY+
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MAX25431ATGB/VY+T
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Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 1

MAX25431EVKIT

Evaluation Kit for the MAX25431

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MAX25431EVKIT

Evaluation Kit for the MAX25431

Evaluation Kit for the MAX25431

Features and Benefits

  • 6V to 36V Input Supply Range
  • Delivers Up to 16A Input Current
  • Enable Input
  • Frequency Synchronization Output
  • Voltage-Monitoring PGOOD Output
  • BIAS Voltage-Monitoring Test Point
  • Fully Assembled and Tested
  • Proven PCB Layout

Product Detail

The MAX25431 evaluation kit (EV kit) is a fully assembled and tested application circuit for the MAX25431 current- mode buck-boost controller IC. The EV kit is designed to deliver up to 16A (max) input current with input voltages from 6V to 36V. The voltage quality can be monitored by observing the PGOOD signal.

The IC offers a 3V to 25V OUT programmable range. Switching frequency is adjustable from 220kHz to 2.2MHz, which allows for small external components, reduced output ripple, and guarantees no AM interference. The IC comes with a spread-spectrum frequency-modulation option designed to minimize EMI-radiated emissions and a SYNCOUT function that outputs 180° out-of-phase clock.

Applications

  • Dedicated Charging Modules
  • Head-unit, radio, navigation, rear-seat entertainment modules
  • USB hubs, multi-media box, breakout-boxes
Tools & Simulations

Tools & Simulations 1

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