MAX25203

NOT RECOMMENDED FOR NEW DESIGNS

Dual-Phase Synchronous Boost Controller with Programmable Gate Drive and I2C

Enable High-Vt FETs, Protection against Overcurrent with Current-Limit Blanking to Reduce System Cost

Data Sheet (Rev. 2) Product Selection Table
Part Models
14
1ku List Price
Starting From $2.00
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Part Details

  • Meets Stringent OEM Module Power Consumption and Performance Specifications
    • ±1.5% Output-Voltage Accuracy at FB
    • Output Voltage Adjustable Between 12V and 65V (70V Abs Max) or 6V and 59V (MAX25203AATJD/MAX25203AATJE)
    • 5µA Shutdown Supply Current
  • High Efficiency and Current Sharing
    • Pass-Through for >98% Efficiency
    • OTP Gate Drive Voltage from 6.5V to 10V Allows User to Optimize External MOSFETs and Improve Efficiency
    • Current Sharing Accuracy of ±5% Between Phases to Improve System Efficiency
    • Programmable Current-Limit Blanking Handles High Peak Loads without Oversizing Inductor
  • EMI-Reduction Features Reduce Interference with Sensitive Radio Bands without Sacrificing Wide Input Voltage Range
    • Spread-Spectrum Option
    • On-the-Fly Frequency-Synchronization Input
    • Resistor-Programmable Frequency between 220kHz and 2.1MHz
    • Synchronization Output Provides 90° Out-of-Phase Clock for Quad-Phase Operation
  • Integration and Thermally Enhanced Package Saves Board Space and Cost
    • Current-Mode Controllers with Forced-Continuous and Skip Modes
    • Side-Wettable, 32-Pin TQFN-EP Package
  • Protection Features and I2C Diagnostics for Improved System Reliability
    • Supply Undervoltage Lockout
    • Die Temperature Monitoring through I2C
    • Short-Circuit Protection with True ShutdownTM
    • Individual Phase Current Monitoring through I2C
MAX25203
Dual-Phase Synchronous Boost Controller with Programmable Gate Drive and I2C
MAX25203: Simplified Block Diagram
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Documentation

Data Sheet 1

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Hardware Ecosystem

Parts Product Life Cycle Description
External Power Switch Boost Controllers 1
MAX25201
PRODUCTION 36V HV Synchronous Boost Controller for Automotive Infotainment Applications
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Tools & Simulations

Software Development 3

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

MAX25203EVKIT

Evaluation Kit for the MAX25203

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Features and Benefits

  • Meets Stringent OEM Module Power Consumption and Performance Specifications
    • ±1.5% Output-Voltage Accuracy at FB
    • Output Voltage Adjustable Between 12V and 65V
    • 5µA Shutdown Supply Current
  • High Efficiency and Current Sharing
    • Preset Gate Drive Voltage for External MOSFETs from 5.5V to 10V Allows User to Optimize External MOSFETs
    • Current Sharing Accuracy is ±5% Between 2 Phases to Improve System Efficiency
  • 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
  • Integration and Thermally Enhanced Packages Save Board Space and Cost
    • Current-Mode Controllers with Forced-Continuous and Skip Modes
    • Side Wettable 32-Pin TQFN-EP Package
  • Protection Features and I2C diagnostics for Improved System Reliability
    • Supply Undervoltage Lockout
    • Die Temperature Monitoring via I2C
    • Short Circuit Protection with True Shutdown
    • Individual Phase Current Monitoring via I2C

Product Details

The MAX25203 evaluation kit (EV kit) is a fully assembled and tested board for evaluating the MAX25203 dualphase automotive synchronous boost controller. The MAX25203 enables infotainment systems to stay in regulation during cold crank or start-stop operation all the way down to battery input of 1.8V. It can also be used to generate backlight voltage and class D audio amplifier voltages. This device can start with an input voltage supply from 4.5V to 42V and can operate down to 1.8V after start-up and has a low 5µA shutdown supply current.

The MAX25203 features a power-OK monitor, overvoltage and undervoltage lockout. Protection features include cycle-by-cycle current limit and thermal shutdown. It is specified for operation over the -40°C to +125°C automotive temperature range.

Applications

  • Automotive Audio Amplifier
  • Infotainment Systems
MAX25203EVKIT
Evaluation Kit for the MAX25203

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