Click here for production status of specific part numbers. MAX20430 Four-Output Mini PMIC For Safety Applications General Description Benefits and Features The MAX20430 is a high-efficiency, four-output DC-DC Multiple Functions for Small Size converter and windowed watchdog. OUT1 is a synchro- Synchronous High-Voltage Buck Converter up to nous step-down converter that converts vehicle battery 2.5A voltage to 3.3V at up to 2.5A. OUT3 boosts OUT1 to 5V at Input Voltage Range 3.5V to 40V up to 500mA, while OUT2 and OUT4 low-voltage synchro- Output Voltage of 3.3V nous step-down converters operate from OUT1 and pro- 5V Synchronous 500mA Boost Converter vide a 0.8V to 3.9875V output voltage range at up to 3A. Dual Synchronous Buck Converters up to 3A All outputs achieve 1.5% output error over load, line, and 0.8V to 3.9875V in 12.5mV Steps temperature range. Flexible Power Sequencer for OUT2, OUT3, and OUT4 The device features 2.1MHz fixed-frequency PWM mode Programmable Challenge/Response or Windowed for all DC-DC outputs for better noise immunity and load- Watchdog transient response. The 2.1MHz frequency operation al- Two Free Programmable UV/OV Voltage Monitors lows for the use of all ceramic capacitors and minimizes 0.8V to 3.9875V in 12.5mV Steps external components. The programmable spread-spec- 2 I C Fast Mode Plus Compatible Interface with trum frequency modulation minimizes radiated electro- Packet Error-Checking Option (PEC) magnetic emissions. Integrated low R switches im- DSON 2.1MHz Internal Operation with Spread-Spectrum prove efficiency at heavy loads and make the layout much Option simpler with respect to discrete solutions. RESET Output The device is offered with factory-preset output voltages. Current Mode, Forced PWM Operation Other features include soft-start, overcurrent, and High-Precision for ASIL Applications overtemperature protections. 1.5% Output Voltage Accuracy 1% OV/UV Monitoring Applications Diagnostics and Redundant Circuits ADAS ASIL C Compliant Redundant Reference BIST Diagnostics Fail Safe on Open Pins Shorted Pin Detection on RESET Mount ID Location Detection Robust for the Automotive Environment Overtemperature and Short-Circuit Protection 5mm x 5mm Side-Wettable TQFN Package -40C to +125C Grade 1 Automotive Temperature Range Ordering Information appears at end of datasheet. 19-100691 Rev 0 10/19MAX20430 Four-Output Mini PMIC For Safety Applications Simplified Block Diagram LOW-VOLTAGE LOW-VOLTAGE STEP-DOWN STEP-DOWN OUT4 OUT2 0.8V TO 3.9875V 0.8V TO 3.9875V 3A 3A MOUNT LOW-VOLTAGE /2 ID BOOST OUT3 VOLTAGE 5V 0.5A /2 MONITOR HIGH-VOLTAGE 2 I C STEP-DOWN WATCHDOG OUT1 BIST 3.3V 2.5A www.maximintegrated.com Maxim Integrated 2