Click here to ask an associate for production status of specific part numbers. MAX20474 3.0V to 5.5V Input, 6V to 18V Output, Synchronous Boost Converter General Description Benefits and Features The MAX20474 is a high-efficiency DC-DC converter that Synchronous Boost Converter for Small Solution Size boosts 3.0V to 5.5V input supply from 6V to 18V at up to 4.0A Peak Input Current 1A load. The boost converter achieves 1.5% output error Resistor-Adjustable Output Voltage from 6V to 18V over load, line, and temperature range. 6V to 18V Fixed Output Selection in 0.25V Steps 3.0V to 5.5V Operating Supply Voltage The device features a 2.2MHz fixed-frequency PWM 2.2MHz Operation mode for better noise immunity and load-transient re- RESET Output sponse, as well as a pulse-frequency modulation mode Spread Spectrum (skip) for increased efficiency during light-load operation. The 2.2MHz frequency operation allows for the use of all High Precision ceramic capacitors and minimizes external components. 1.5% Output Voltage Accuracy, Fixed The programmable spread-spectrum frequency modula- 2.2% Output Voltage Accuracy, Adj tion minimizes radiated electromagnetic emissions. Inte- 81 3% UV Monitoring grated low R switches improve efficiency at heavy 121 3% OV Monitoring DSON loads and make planning the layout a much simpler task Good Load-Transient Performance with respect to discrete solutions. Robust for the Automotive Environment Other features include True Shutdown, soft-start, over- Current-Mode, Forced-PWM, and SKIP Operation current, and overtemperature protections. Overtemperature and Short-Circuit Protection 3mm x 3.5mm, 14-Pin TDFN -40C to +125C Automotive Temperature Range Applications Automotive Point of Load Simplified Block Diagram INPUT OUTPUT OUT BIAS BIAS LDO OUTPUT OUTS DRIVER REG REG LDO LX INPUT PGND AV MAIN CONTROL TO INTERNAL CIRCUITRY GND MAX20474 SYNC OSC SSEN 10k CONTROL EN RESET LOGIC True Shutdown is a trademark of Maxim Integrated Products, Inc. Ordering Information appears at end of data sheet. 19-101170 Rev 1 2/22 2022 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 2022 Analog Devices, Inc. All rights reserved.MAX20474 3.0V to 5.5V Input, 6V to 18V Output, Synchronous Boost Converter TABLE OF CONTENTS General Description 1 Applications 1 Benefits and Features 1 Simplified Block Diagram . 1 Absolute Maximum Ratings 5 Package Information . 5 TDFN 5 Electrical Characteristics . 5 Typical Operating Characteristics 7 Pin Configuration . 10 Pin Description 10 Functional Diagrams 11 Internal Block Diagram 11 Detailed Description 12 Enable Input (EN) 12 RESET Output 12 Internal Oscillator 12 Synchronization (SYNC) 12 Charge Mode . 12 Soft-Start 13 Current Limit/Short-Circuit Protection . 13 PWM/SKIP Modes . 13 Overtemperature Protection 13 OUTS Pin Considerations . 13 BIAS Pin Considerations 13 REG Pin Considerations 13 Applications Information . 15 Input Capacitor 15 Inductor Selection 15 Boost Output Capacitor . 15 External Feedback Resistors . 16 Layout Considerations 16 Typical Application Circuits . 18 Fixed Output 18 Adjustable 12V Output 19 Ordering Information 19 Revision History . 20 www.analog.com Analog Devices 2