MAX20433
PRODUCTIONFour-Output, Low-Noise PMIC for Safety Applications
- Part Models
- 8
- 1ku List Price
- price unavailable
Overview
- Multiple Functions for Small Size
- 3A Synchronous High-Voltage Buck Converter
- Input Voltage Range 3.5V to 40V
- Output Voltage of 3.3V
- 5V Synchronous 0.5A Boost Converter
- Dual 3.2A Low-Noise Buck Converter
- 0.5V to 3.6875V in 12.5mV Steps
- Flexible Power Sequencer
- Programmable Challenge/Response or Windowed Watchdog
- I2C Fast-Mode Plus Compatible Interface with Packet Error-Checking Option (PEC)
- 2.1MHz Internal Operation with Spread Spectrum
- RESET Output
- Current-Mode, Forced-PWM Operation
- 3A Synchronous High-Voltage Buck Converter
- High-Precision for ASIL Applications
- ±1.5% Output Voltage Accuracy
- ±1% OV/UV Monitoring
- MAXQ Power Architecture
- Diagnostics and Redundant Circuits
- 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
- −40°C to +125°C Automotive Temperature
The MAX20433 is a high-efficiency, four-output DC-DC converter with a windowed watchdog. The OUT1 is a synchronous step-down converter that converts vehicle battery voltage to 3.3V at up to 3A. The OUT3 boosts the OUT1 to 5V at up to 0.5A, while the OUT2/4 low-noise, low-voltage, synchronous step-down converters operate from OUT1 and provide a 0.5V to 3.6875V output voltage range at up to 3.2A. The low-noise performance eliminates the need for external LDOs and allows the use of a ferrite bead (LC) filter instead. All outputs achieve ±1.5% output error.
The device features a 2.1MHz fixed-frequency PWM mode for all DC-DC outputs for better noise immunity and load-transient response. The 2.1MHz frequency operation allows for the use of all ceramic capacitors and minimizes the external components. The programmable spread-spectrum frequency modulation minimizes the radiated electromagnetic emissions. Integrated low-RDSON switches improve efficiency at heavy loads and make the layout much simpler with respect to discrete solutions.
The MAX20433 features the MAXQTM power architecture, which provides precision transient performance and phase margin. This allows to obtain the maximum power, performance, and precision while minimizing system cost for any specific application.
The devices are offered with factory-preset output voltages. Other features include soft-start, overcurrent, and overtemperature protection.
Applications
- Advanced Driver-Assistance Systems (ADAS)
Complete documentation is available upon completion of a Non-Disclosure Agreement (NDA). To request an NDA, click here.
Documentation
Data Sheet 1
User Guide 1
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 |
|---|---|---|---|
| MAX20433ATIC/VY+ | LFCSP | ||
| MAX20433ATIC/VY+T | LFCSP | ||
| MAX20433ATIE/VY+ | LFCSP | ||
| MAX20433ATIE/VY+T | LFCSP | ||
| MAX20433ATIEF/VY+ | LFCSP | ||
| MAX20433ATIEF/VY+T | LFCSP | ||
| MAX20433ATIEG/VY+ | LFCSP | ||
| MAX20433ATIEG/VY+T | LFCSP |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Dec 24, 2025 - 2469 WAFER FAB |
||
| MAX20433ATIC/VY+ | PRODUCTION | |
| MAX20433ATIC/VY+T | PRODUCTION | |
| MAX20433ATIE/VY+ | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Software Resources
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Evaluation Kit for MAX20433
Resources
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