MAX20499DAFOA/VY+ Analog Devices

Click here to ask about the production status of specific part numbers. MAX20499C/MAX20499D Automotive Single 16A/12A Step-Down Converter General Description Benefits and Features The MAX20499C/MAX20499D is a high-efficiency, syn- High-Efficiency DC-DC Converter chronous step-down converter that operates with a 3.0V Up to 16A Peak Output Current to 5.5V input voltage range and supplies a 0.5V to 1.275V MAX20499C: 16A output voltage range. The wide input/output voltage range MAX20499D: 12A and the ability to provide up to 16A peak output current Differential Remote Voltage Sensing make this device ideal for on-board point-of-load and post- 3.0V to 5.5V Operating Supply Voltage regulation applications. The MAX20499C/MAX20499D 2 I C Controlled Output Voltage: 0.5V to 1.275V in achieves 1.5% output error over load, line, and tempera- 6.25mV Steps ture ranges. Excellent Load-Transient Performance The MAX20499C/MAX20499D features a 2.2MHz fixed- Programmable Compensation frequency PWM mode for better noise immunity and load- 2.2MHz or 1.1MHz Operation transient response. The 2.2MHz frequency operation al- 1.5% Output Voltage Accuracy lows for the use of all ceramic capacitors and minimizes RESET Output external components. The spread-spectrum frequency Current-Mode, Forced-PWM Operation modulation option minimizes radiated electromagnetic Overtemperature and Short-Circuit Protection emissions. Integrated low R switches improve effi- DS(ON) 3.5mm x 4mm 17-Pin Side-Wettable FC2QFN ciency at heavy loads and make layout simpler than dis- -40C to +125C Grade 1 Automotive Temperature crete solutions. Range The MAX20499C/MAX20499D is offered with factory-pre- 2 Ordering Information appears at end of data sheet. set output voltage. The I C interface supports dynamic voltage adjustment with programmable slew rates. Other features include programmable soft start, overcurrent, and overtemperature protections. Applications Automotive Entertainment Systems SoC Core Power Simplified Block Diagram PV RS+ PV 4x10F BST 0.1F PGND 70nH V MAX20499C/DMAX20499C/D OUT PV LX 2 AV 8x47F 2.2F PGND GND RS- EN SYNC VL PV 1K 1K 10K SCL SDA RESET 19-100981 (Rev A), 11/20MAX20499C/MAX20499D Automotive Single 16A/12A Step-Down Converter TABLE OF CONTENTS General Description 1 Applications 1 Benefits and Features 1 Simplified Block Diagram . 1 Absolute Maximum Ratings 6 Recommended Operating Conditions . 6 Package Information . 6 17-FC2QFN . 6 Electrical Characteristics . 6 Typical Operating Characteristics 9 Pin Configuration . 10 Top View 10 Pin Description 11 Functional Diagrams 12 Internal Block Diagram 12 Detailed Description 13 2 I C Interface 13 Bit Transfer 13 STOP and START Conditions 14 Early STOP condition 14 Clock Stretching 14 I2C General Call Address . 14 Slave Address 14 Acknowledge . 14 Write Data Format . 15 Read Data Format . 15 Writing to a Single Register 16 Writing Multiple Bytes Using Register-Data Pairs . 17 Reading a Single Register . 18 Reading Multiple Bytes . 19 RESET Output 19 Soft-Start 20 Dynamic Voltage Scaling 20 Shutdown 20 Spread-Spectrum Option 20 Synchronization (SYNC) 20 Current Limit / Short-Circuit Protection 20 Boost Refresh . 20 Overtemperature Protection 20 www.maximintegrated.com Maxim Integrated 2