Click here to ask an associate for production status of specific part numbers. MAX20098 Versatile Automotive 36V 2.2MHz Buck Controller with 3.5A I Q General Description Benefits and Features The MAX20098 is an automotive 2.2MHz synchronous Meets Stringent Automotive OEM Module Power step-down controller IC with 3.5A IQ. This IC operates Consumption and Performance Specifications with an input-voltage supply from 3.5V to 42V and can op- 3.5A Quiescent Current in Skip Mode at V = OUT erate in dropout condition by running at 99% (typ) duty cy- 3.3V cle. It is intended for applications with mid- to high- pow- Fixed 5.0V/3.3V or Adjustable 1V to 10V Output er requirements that operate at a wide input voltage range 1.1% Output-Voltage Accuracy for 5V Fixed such as during automotive cold-crank or engine stop-start Setting conditions. Enables Crank-Ready Designs The step-down controller operates at up to 2.2MHz fre- Wide Input Supply Range from 3.5V to 42V quency to allow small external components, reduced out- EMI Reduction Features Reduce Interference with put ripple, and to guarantee no AM band interference. Sensitive Radio Bands without Sacrificing Wide Input The switching frequency is resistor adjustable (220kHz Voltage Range to 2.2MHz). FSYNC input programmability enables three 50ns (typ) Minimum On-Time Allows frequency modes for optimized performance: forced fixed- Skip-Free Operation for 3.3V Output from Car frequency operation, skip mode with ultra-low quiescent Battery at 2.2MHz current, and synchronization to an external clock. The IC Spread-Spectrum Option also provides a SYNC output to enable two controllers to Frequency-Synchronization Input operate in parallel. The IC has a factory-programmable Resistor-Programmable Frequency Between spread-spectrum option for frequency modulation to mini- 220kHz and 2.2MHz mize EMI interference. Integration and Thermally Enhanced Packages Save The PGOOD output indicates when the voltage is within Board Space and Cost regulation range. Protection features include cycle-by- cy- 2MHz Step-Down Controller cle current limit and thermal shutdown. The MAX20098 is Current-Mode Controller with Forced-Continuous specified for operation over the -40C to +125C auto- mo- and Skip Modes tive temperature range. 16-Pin Side-Wettable (SW) TQFN-EP Package 20A Reference Design Available Applications Protection Features Improve System Reliability Infotainment Systems Supply Undervoltage Lockout USB Hub Overtemperature and Short-Circuit Protection General-Purpose Point-of-Load (POL) Output Overvoltage and Undervoltage Monitoring -40C to +125C Grade 1 Automotive Temperature Range AEC-Q100 Qualified Ordering Information appears at end of data sheet. 19-100089 Rev 16 10/21 2021 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. One Analog Way, Wilmington, MA 01887 U.S.A. Tel: 781.329.4700 2021 Analog Devices, Inc. All rights reserved.MAX20098 Versatile Automotive 36V 2.2MHz Buck Controller with 3.5A I Q Simplified Block Diagram VOUT L RCS VBAT COUT CBST BST DH LX DL PGND SUP C IN PGOOD EN MAX20098 CS FSYNC/SYNCOUT FOSC OUT RFOSC AGND BIAS FB COMP CBIAS C F RC CC www.analog.com Analog Devices 2