Features and Benefits
- Meets Stringent Automotive Quality and Reliability Requirements
- Operating VIN Range: 2V to 36V Allows Operation in Cold-Crank Conditions
- Tolerates Input Transients to 40V
- EN Pin Compatible from +3.3V to +40V
- -40°C to +125°C Automotive Temperature Range
- AEC-Q100 Qualified
- Efficient Solution in a Small Solutions Size
- Fixed 5V Output Voltage and Adjustable 3V to 25V
- High Switching Frequency Allows Use of Small External Components
- Small 4mm x 4mm 24-Pin SWTQFN Package
- Low Quiescent Current Helps Designers Meet Stringent OEM Current Requirements
- 10µA (max) Quiescent Current in Shutdown
- EMI Mitigation to meet CISPR25 Class 5 Requirements
- 220kHz to 2.2MHz Operating Frequency
- Fixed-Frequency PWM Mode
- External Frequency Synchronization or SYNC OUT Capability
The MAX25431 is a current-mode buck-boost controller. The device operates with input voltages from 6V to 36V. The switching frequency is resistor programmable from 220kHz to 2.2MHz and can be synchronized to an external clock..
The device output voltage is available as 5V fixed or adjustable from 4V to 25V. The wide input voltage range, along with its ability to maintain constant output voltage during battery transients, makes the device ideal for automotive applications. In light load applications, a logic input (FSYNC) allows the devices to operate in fixed-frequency, forced-PWM mode to eliminate frequency variaion and help minimize EMI. Protection features include cycle-by-cycle current limit followed by hiccup during sustained overloads, input under-voltage lockout (UVLO), out- put overvoltage protection and thermal shut- down with automatic recovery.
The MAX25431 is available in a small 4mm x 4mm 24-pin TQFN-EP SW package.
- Dedicated Charging Modules
- Rear-Seat Entertainment Modules
- USB Hubs, Breakout Boxes and Multimedia Hubs
Product Lifecycle Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
Evaluation Kits (1)
The MAX25431 evaluation kit (EV kit) is a fully assembled and tested application circuit for the MAX25431 current- mode buck-boost controller IC. The EV kit is designed to deliver up to 16A (max) input current with input voltages from 6V to 36V. The voltage quality can be monitored by observing the PGOOD signal.
The IC offers a 3V to 25V OUT programmable range. Switching frequency is adjustable from 220kHz to 2.2MHz, which allows for small external components, reduced output ripple, and guarantees no AM interference. The IC comes with a spread-spectrum frequency-modulation option designed to minimize EMI-radiated emissions and a SYNCOUT function that outputs 180° out-of-phase clock.
- Dedicated Charging Modules
- Head-unit, radio, navigation, rear-seat entertainment modules
- USB hubs, multi-media box, breakout-boxes
Features & Benefits
- 6V to 36V Input Supply Range
- Delivers Up to 16A Input Current
- Enable Input
- Frequency Synchronization Output
- Voltage-Monitoring PGOOD Output
- BIAS Voltage-Monitoring Test Point
- Fully Assembled and Tested
- Proven PCB Layout
Documentation & Resources
Tools & Simulations
EE-Sim Power® Tools
The EE-Sim DC-DC Converter Tool uses your requirements to quickly create a complete power design including a schematic, BOM with commercially available parts, and time and frequency domain simulations. Your customized schematic can be downloaded for further analysis in the standalone EE-Sim OASIS Simulator, featuring SIMPLIS and SIMetrix SPICE engines.
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 Number||Material Declaration||Reliability Data||Pin/Package Drawing||CAD Symbols, Footprints & 3D Models|
|MAX25431ATGA/VY+||Material Declaration||Reliability Data||24-LFCSP_SS-4X4X0.75|
|MAX25431ATGA/VY+T||Material Declaration||Reliability Data||24-LFCSP_SS-4X4X0.75|
|MAX25431ATGB/VY+||Material Declaration||Reliability Data||24-LFCSP_SS-4X4X0.75|
|MAX25431ATGB/VY+T||Material Declaration||Reliability Data||24-LFCSP_SS-4X4X0.75|
|Wafer Fabrication Data|
Support & Discussions
Sample & Buy
See our Ordering FAQs for answers to questions about online orders, payment options and more.
Buy Now Pricing
(**) Displayed Buy Now Price and Price Range is based on small quantity orders.
(*)The 1Ku list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.
Please see the latest communication from our CCO regarding lead times.
Selecting the Sample button above will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact SampleSupport@analog.com with any questions regarding this Sample Site.
Pricing displayed is based on 1-piece.
Up to two boards can be purchased through Analog.com. To order more than two, please purchase through one of our listed distributors.
Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.