MAX20458

RECOMMENDED FOR NEW DESIGNS

36V Boost Controller with 3.5A Synchronous Buck Converter For Automotive Applications

Industries Smallest and Lowest Iq PMIC Offering Hgh Integration and Low BOM Cost for Automotive Applications

Data Sheet (Rev. 2) Product Selection Table

Part Models: 6
1ku List Price: Starting From $1.69

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Part Details

Meets Stringent OEM Module Power Consumption and Performance Specifications
- 10μA Supply Current with 5V Buck On
- OUT Can Be Either 5V or 3.3V
- 30µA Supply Current with All Regulators On
Enables Crank-Ready Designs
- Output Voltages in Regulation Through Cold Crank Down to 2V Battery Voltage
- Wide Input Supply Range from 3.5V to 36V
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
- Spread-Spectrum Option
- Phase-Locked Loop (PLL) Frequency Synchronization

Integration and Thermally Enhanced Packages Save Board Space and Cost
- 2.1MHz Buck Converters with Asynchronous Boost Controller
- Current-Mode Controller with Forced Fixed Frequency and Skip Modes
- Thermally Enhanced 5mm x 5mm, 28-Pin TQFN-EP Package
Protection Features Improve System Reliability
- Supply Undervoltage Lockout
- Overtemperature and Short-Circuit Protection

Part Models: 6
1ku List Price: Starting From $1.69

Documentation

Data Sheet 1

MAX20458: 36V Boost Controller with 3.5A Synchronous Buck Converter For Automotive Applications Data Sheet (Rev.2) 08/08/2024

Technical Articles 1

Choose a Low IQ, Low Minimum On-Time, and Low EMI Off-Battery PMIC to Power Your Automotive Electronics 03/02/2021

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.

Part Model	Pin/Package Drawing	Documentation	CAD Symbols, Footprints, and 3D Models
MAX20458ATIA/VY+	28-LFCSP_SS-5X5X0.75	Material Declaration Reliablity Data	Ultra Librarian SamacSys
MAX20458ATIA/VY+T	28-LFCSP_SS-5X5X0.75	Material Declaration Reliablity Data	Ultra Librarian SamacSys
MAX20458ATID/VY+	28-LFCSP_SS-5X5X0.75	Material Declaration Reliablity Data	Ultra Librarian SamacSys
MAX20458ATID/VY+T	28-LFCSP_SS-5X5X0.75	Material Declaration Reliablity Data	Ultra Librarian SamacSys
MAX20458ATIF/VY+	28-LFCSP_SS-5X5X0.75	Material Declaration Reliablity Data	Ultra Librarian SamacSys
MAX20458ATIF/VY+T	28-LFCSP_SS-5X5X0.75	Material Declaration Reliablity Data	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Dec 14, 2020 - 2077 WAFER FAB
		pcn_2077
MAX20458ATIA/VY+	PRODUCTION	pcn_2077

This is the most up-to-date revision of the Data Sheet.

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

Evaluation Kit for the MAX20458

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Features and Benefits

High-Voltage Step-Down Converter with Integrated Power FETs to Minimize Board-Area-Occupancy
Asynchronous Boost Controller
3.5V to 40V Input Supply Range
Input Supply Range Extended down to 2V with Pre-Boost Enabled
10V Fixed Boost Output Voltage (Separate Option Provides Adjustable Output Voltage)
Buck Provides 5V/3.3V Output up to 3.5A Output Current
Buck Output Voltages Adjustable between 1V and 10V using External Resistors
±2% Buck Output Voltage Accuracy
Frequency-Synchronization Input
Independent Enable Inputs
Voltage-Monitoring PGOOD1 Output
Jumpers and Test Points on Key Nodes for Simplified Evaluation
Proven PCB Layout
Fully Assembled and Tested

Product Details

The MAX20458 evaluation kit (EV kit) is a fully assembled and tested application circuit that simplifies the evaluation of the MAX20458 400kHz/2.1MHz, 36V boost controller and buck converter in a 28-pin side-wettable TQFN package. 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 MAX20458ATIA/VY+ installed (3.3V/ADJ, 2.1MHz) but can also be used to evaluate other MAX20458 variants with minimal component changes discussed in the Evaluating Other Variants section.

Applications

Automotive Start-Stop System
Instrument Cluster
Navigation and Radio Head Units
Telematics Applications

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