MAX25263

RECOMMENDED FOR NEW DESIGNS

Automotive, 65V, 2A/3A Mini Buck Converter

Industry's first 70V automotive Buck with Low IQ and optimized EMI Performance

Data Sheet (Rev. 4) Product Selection Table
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Overview

  • Meets Stringent Original Equipment Manufacturer (OEM) Module Power Consumption and Performance Specifications
    • 2A/3A Output-Current Capability
    • 3.5µA Supply Current in Standby Mode
  • Enables Double Battery Operation
    • Wide Input Supply Range from 3.5V to 65V
    • Programmable 1V to 20V Output Voltage
    • Fixed 5V/3.3V/12V Options Available
  • EMI Reduction Features Reduce Interference with Sensitive Radio Bands without Sacrificing Wide Input Voltage Range
    • 20ns (typ) Minimum On-Time Guarantees Skip-Free Operation for 3.3V Output at 2.1MHz and 24VIN
    • Spread-Spectrum Option
    • Phase-Locked Loop (PLL) Frequency Synchronization
  • Protection Features Improve System Reliability
    • PGOOD Output and High-Voltage EN Input Simplify Power Sequencing
    • Undervoltage Lockout
    • Overtemperature and Short-Circuit Protection
    • AEC-Q100 Qualified

The MAX25262/MAX25263 are small, synchronous buck converters with integrated high-side and low-side switches. The device is designed to deliver up to 2A/3A with 3.5V to 65V input voltages while using only 3.5µA quiescent current at no load. The IC comes with a small 20ns minimum on-time capability, which enables the large step-down conversions in a single stage without skipping cycles. A max duty cycle of 98% and low high side FET ON resistance enable a low dropout operation for low input voltage applications.

The voltage quality can be monitored by observing the PGOOD signal. The device offers two fixed 5V and 3.3V output voltages. In addition, the device can be configured for 1V to 20V output voltages using an external resistor-divider. The frequency is internally fixed at 2.1MHz, which allows for small external components, reduced output ripple, and guarantees no AM interference. A 400kHz option is also offered to provide the minimum switching losses and maximum efficiency. For high light load efficiency, the IC enters skip mode at light loads when FSYNC is pulled low. A pin selectable forced pulse-width modulation (PWM) mode is also available for the EMI critical applications. The IC comes in a symmetrical flip-chip package that offers superior EMI performance. Further, the pin selectable spread spectrum helps to enhance the EMI performance.

Applications

  • Automotive Instrument Cluster
  • Distributed DC Power Systems
  • Double battery automotive systems
  • Navigation and Radio Head Units
MAX25263
Automotive, 65V, 2A/3A Mini Buck Converter
MAX25262-MAX25263: Simplified Block Diagram MAX25262-MAX25263: Pin Configuration
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Documentation

Data Sheet 1

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Software Resources

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Hardware Ecosystem

Parts Product Life Cycle Description
Switching Regulators & Controllers 2
MAX20058
PRODUCTION 60V, 1A, Automotive Synchronous Step-Down DC-DC Converter
MAX20059
RECOMMENDED FOR NEW DESIGNS 72V, 1A, Automotive Synchronous Step-Down DC-DC Converter
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Tools & Simulations

EE-Sim Power® Tools 1

The EE-Sim DC-DC Converter Tool uses your requirements to quickly create a complete power design including a schematic, BOM with commercially available parts, and time and frequency domain simulations. Your customized schematic can be downloaded for further analysis in the standalone EE-Sim OASIS Simulator, featuring SIMPLIS and SIMetrix SPICE engines.

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Evaluation Kits

MAX25263EVKIT

Evaluation Kit for the MAX25262/MAX25263

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Features and Benefits

  • Input Supply Range from 3.5V to 65V
  • Output Voltage: 3.3V/5V Fixed and Adjustable from 1V to 20V
  • 2A/3A Output-Current Capability
  • Frequency - Synchronization Input
  • Spread Spectrum Available
  • Voltage Monitoring PGOOD Output Available
  • Proven PCB Layout
  • Fully Assembled and Tested

Product Details

The MAX25262/MAX25263 evaluation kits (EV kits) come fully assembled and tested. The EV kits demonstrate the MAX25262/MAX25263 synchronous buck converters. The EV kits operate over a wide 3.5V to 65V input range. The MAX25262EVKIT is populated with the MAX25262AFOA/ VY+, and the MAX25263EVKIT is populated with the MAX25263AFOC/VY+. The EV kit output voltage is fixed and easily configured with minimum component changes. Other converters in the family can be tested on the same EV kit; however, changing the IC or the output voltage may also require changing other components. Consult the IC data sheet for guidance on selecting the proper ICs and external components. Output voltage quality can be monitored by observing the PGOOD signal.

Applications

  • Automotive ADAS and other safety critical applications
  • Automotive High Power Sensor Fusion
  • Automotive Infotainment Systems
  • Distributed DC Power Systems
  • Double battery automotive systems
  • Navigation and Radio Head U

MAX25262EVKIT

Evaluation Kit for the MAX25262/MAX25263

Buy Now View Details

Features and Benefits

  • Input Supply Range from 3.5V to 65V
  • Output Voltage: 3.3V/5V Fixed and Adjustable from 1V to 20V
  • 2A/3A Output-Current Capability
  • Frequency - Synchronization Input
  • Spread Spectrum Available
  • Voltage Monitoring PGOOD Output Available
  • Proven PCB Layout
  • Fully Assembled and Tested

Product Details

The MAX25262/MAX25263 evaluation kits (EV kits) come fully assembled and tested. The EV kits demonstrate the MAX25262/MAX25263 synchronous buck converters. The EV kits operate over a wide 3.5V to 65V input range. The MAX25262EVKIT is populated with the MAX25262AFOA/ VY+, and the MAX25263EVKIT is populated with the MAX25263AFOC/VY+. The EV kit output voltage is fixed and easily configured with minimum component changes. Other converters in the family can be tested on the same EV kit; however, changing the IC or the output voltage may also require changing other components. Consult the IC data sheet for guidance on selecting the proper ICs and external components. Output voltage quality can be monitored by observing the PGOOD signal.

Applications

  • Automotive ADAS and other safety critical applications
  • Automotive High Power Sensor Fusion
  • Automotive Infotainment Systems
  • Distributed DC Power Systems
  • Double battery automotive systems
  • Navigation and Radio Head U
MAX25263EVKIT
Evaluation Kit for the MAX25262/MAX25263
MAX25262EVKIT
Evaluation Kit for the MAX25262/MAX25263

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