MAX25229
RECOMMENDED FOR NEW DESIGNSEight-Output ASIL D PMIC
- Part Models
- 1
- 1ku List Price
- Starting From $3.53
Overview
- Multiple Functions for Small Size
- Synchronous 5V Boost Converter
- Up to 700mA Output Current
- Four 4A Buck Converters
- OUT2–4: 0.5V to 2.0V
- OUT5: 0.5V to 3.3V
- Supports Dual-Phase Operation
- Three 600mA PMOS LDOs
- Can Be Configured as Voltage Monitors
- Five Programmable GPIO Pins
- Challenge-Response Watchdog
- I2C Fast-mode Plus-Compatible Interface
- 2.1MHz Internal Operation with Spread Spectrum
- High-Precision Performance
- ±1% Output Voltage Accuracy
- ±1% OV/UV Monitoring
- Excellent Load-Transient Performance
- MAXQ™ Architecture
- Diagnostics and Redundant Circuits
- ASIL D Compliant
- Redundant Reference
- Fail Safe on Open Pins
- Packet Error Checking (PEC) on I2C
- Shorted Pin Detection on RESET
- AV Supply OV/UV Monitor
- Robust for the Automotive Environment
- Current-Mode, Forced-PWM Operation
- Overtemperature and Short-Circuit Protection
- 5mm x 5mm, 29-Pin FCQFN
- -40°C to +125°C Grade 1 AutomotiveTemperature Range
The MAX25229 is a high-efficiency, eight-output, low-voltage PMIC. OUT1 is a 1.6A boost converter which can boost a 3.3V input supply to 5V at up to 500mA output current, while four synchronous step-down converters provide an output voltage range of 0.5V to 2.0V at up to 4A for 1-phase and 8A for 2-phase operation. Three 600mA PMOS LDOs operate from an input voltage range of 2.7V to 5.5V and provide an output voltage of 0.5V to 3.68V. All DC-DC converters achieve ±1% DC accuracy over load, line, and temperature range, while the LDOs achieve ±3% AC+DC accuracy.
This device features a 2.1MHz fixed-frequency PWM mode for better noise immunity and load-transient response. The high switching frequency operation allows for the use of all ceramic capacitors and minimizes external components. The spread-spectrum frequency modulation minimizes radiated electromagnetic emissions. Integrated low RDS(ON) switches improve efficiency at heavy loads and simplify the layout with respect to discrete solutions. The MAXQ™ architecture minimizes output capacitance for each output by individually optimizing each output for the application requirements and eliminating process variations that reduce performance.
The device is offered with factory-preset output voltages. See the Ordering Information table for options.
APPLICATIONS
- Domain ECU
- Advanced Driver-Assistance Systems
Documentation
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 |
|---|---|---|---|
| MAX25229AFYJ/VY+ | 5.0X5.0X0.75MM |
This is the most up-to-date revision of the Data Sheet.