Products
MAX25239
RECOMMENDED FOR NEW DESIGNSAutomotive 2V to 36V, 6A Buck-Boost Converters
Industry's only 6A Automotive Buck-Boost with Integrated H-Bridge Switches
- Part Models
- 6
- 1ku List Price
- Starting From $3.57
Viewing:
Overview
- Meets Stringent Automotive Quality and Reliability Requirements
- 2V to 36V Operating Input Voltage Range Allows Operation in Cold-Crank Conditions
- Tolerates Input Transients up to 42V
- EN Pin Compatible up to 42V
- 8.2A/10A Typical Input Current Limit
- Fixed and Adjustable Output Voltage Options
- -40°C to +125°C Grade 1 AutomotiveTemperature Range
- AEC-Q100 Qualified High Integration and ThermallyEnhanced Package Reduces BOM Cost and BoardSpace
- Integrated FETs H-Bridge Architecture
- 2.1MHz/400kHz/200kHz Switching FrequencyOptions
- Phase-Locked Loop (PLL) FrequencySynchronization
- Thermally Enhanced, 22-Pin and 18-PinFC2QFN Packages
- Low Quiescent Current Meets Stringent OEMCurrent Requirements
- 95μA Quiescent Current in Standby Mode
- 10μA Maximum Shutdown Current
- Reduced EMI Emissions at Switching Frequency
- Spread-Spectrum Function Enabled/Disabled bySPS Pin
- Protection Features Improve System Reliability
- Supply Undervoltage Lockout and ThermalProtection
- Output PGOOD Indicator, Overvoltage, andShort-Circuit Protection
The MAX25239/MAX25240 are small, synchronous, buck-boost converters with integrated H-bridge switches. These ICs provide a fixed-output regulation voltage and an externally adjustable output voltage in the 3V to 20V range with an input voltage above, below, or equal to the output regulation voltage. The ICs have typical 8.2A and 10A input current limit options and can support continuous load currents up to 6A depending on the input-to-output voltage ratio and operating frequency. The devices also have a wide input voltage range of 2V to 36V.
The MAX25239/MAX25240 have three switching frequency options: 2.1MHz, 400kHz, and 200kHz. The 2.1MHz high switching frequency allows small external components and reduced output ripple, and guarantees no AM band interference, while the 400kHz or 200kHz switching frequency offers better efficiency and relieves the power consumption concern. The SYNC input allows three operation modes: skip mode with ultra-low quiescent current, forced fixed-frequency PWM operation, and synchronization to an external clock. The ICs also include spread-spectrum frequency modulation to minimize EMI interference.
The MAX25239/MAX25240 feature a power-OK (POK) indicator, undervoltage lockout, overvoltage protection, cycle-by-cycle current limit, and thermal shutdown. The ICs are available in small, 4.25mm x 4.25mm x 0.75mm, 22-pin FC2QFN and 5.00mm x 5.00mm x 0.75mm, 18-pin FCQFN packages.
Applications
- ADAS ECU
- Infotainment Systems
- Body Electronics
- Start-Stop Systems
- Point-of-Load Power Supplies
Documentation
Data Sheet 1
Video 2
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 |
|---|---|---|---|
| MAX25239AFFA/VY+ | LFCSP | ||
| MAX25239AFFA/VY+T | LFCSP | ||
| MAX25239AFFB/VY+ | LFCSP | ||
| MAX25239AFFB/VY+T | LFCSP | ||
| MAX25239AFFD/VY+ | LFCSP | ||
| MAX25239AFFD/VY+T | LFCSP |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Jun 27, 2025 - 2426A MECHANICAL DATASHEET |
||
| MAX25239AFFA/VY+ | PRODUCTION | |
| MAX25239AFFA/VY+T | PRODUCTION | |
| MAX25239AFFB/VY+ | PRODUCTION | |
| MAX25239AFFB/VY+T | PRODUCTION | |
| MAX25239AFFD/VY+ | PRODUCTION | |
| MAX25239AFFD/VY+T | PRODUCTION | |
|
Jan 10, 2023 - 2318 DESIGN |
||
| MAX25239AFFA/VY+ | PRODUCTION | |
| MAX25239AFFA/VY+T | PRODUCTION | |
| MAX25239AFFB/VY+ | PRODUCTION | |
| MAX25239AFFB/VY+T | PRODUCTION | |
| MAX25239AFFD/VY+ | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Software Resources
Can't find the software or driver you need?
Request a Driver/SoftwareHardware Ecosystem
| Parts | Product Life Cycle | Description |
|---|---|---|
| Switching Regulators & Controllers 3 | ||
| MAX20039 | RECOMMENDED FOR NEW DESIGNS | Automotive, 2V to 36V, 2.2MHz, 0.6A/1.2A Buck-Boost Converters with Integrated H-Bridge Architecture |
| MAX20040 | RECOMMENDED FOR NEW DESIGNS | Automotive, 2V to 36V, 2.2MHz, 0.6A/1.2A Buck-Boost Converters with Integrated H-Bridge Architecture |
| MAX20048 | PRODUCTION | Automotive 40V, 55µA IQ, 2.2MHz, H-Bridge Buck-Boost Controller |
Tools & Simulations
LTspice
Models for the following parts are available in LTspice:
- MAX25239
ADI Power Studio™ Designer
ADI Power Studio™ Designer is the next-generation tool for IC-level, power supply design, guiding engineers to faster, validated solutions.
Open ToolLTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.
Evaluation Kits
Evaluation Kit for the MAX25239, MAX25240