MAX42408
RECOMMENDED FOR NEW DESIGNS36V, 8A/10A Fully Integrated Buck Converter with 20μA Quiescent Current and Dual-Phase Capability
- Part Models
- 4
- 1ku List Price
- Starting From $2.13
Overview
- High-Power DC/DC Converter in Small Solution Size
- Operating VIN range of 4.5V to 36V
- Synchronous DC-DC Converter with Integrated FETs
- 8A/10A Maximum Output Current
- 400kHz and 1.5MHz Fixed Frequency Options
- Fixed Soft-Start Time
- 2.5ms for 400kHz
- 3.5ms for 1.5MHz
- 36ns Minimum On-Time
- Programmable Output Voltage
- 0.8V to 10V for 400kHz
- 0.8V to 6V for 1.5MHz
- Symmetric and Balanced SUP and PGND Pinout Placement for Better EMI Performance
- Thermally-Enhanced 3.5mm x 3.75mm, 17-Pin FC2QFN Package
- High Efficiency at All Load Ranges
- 20μA Quiescent Current in Skip Mode
- Up to 95.6% Eff. at 12VIN/3.3VOUT/400kHz
- Up to 93.9% Eff. at 12VIN/3.3VOUT/1.5MHz
- Dual-Phase Operation up to 20A Load Capability
- Frequency Synchronization Input/Output
- 180º Out-of-Phase Between Controller and Target
- Dynamic Current Sharing
- Forced PWM and Skip-Mode Operation
- 99% Duty Cycle Operation with Low Dropout Voltage
- Power Good Indicator
- Overtemperature and Short-Circuit Protection
- -40°C to +125°C Temperature Range
- Scalable Power Solution
- Footprint Compatible with MAX42405/MAX42406
The MAX42408/MAX42410 are highly-integrated synchronous buck converters with internal high-side and low-side switches. The ICs deliver up to 8A/10A with input voltage from 4.5V to 36V. The MAX42408/MAX42410 can operate in the dropout mode by running at very high duty cycle, which make them ideal for industrial applications.
The MAX42408/MAX42410 offer programmable output-voltage options. High switching frequency at 1.5MHz and 400kHz options allow for small external components and reduced output ripple. SYNC input programmability enables three modes for optimized performance: forced PWM mode, skip mode with ultra-low quiescent current, and synchronization to an external clock.
The MAX42408/MAX42410 also come with dual-phase capability, which allows up to 20A designs. Two ICs can be configured as a controller and target with dynamic current sharing and 180º out-of-phase operation.
The MAX42408/MAX42410 are available in a small 3.5mm x 3.75mm, 17-pin FC2QFN package. They are pin-to-pin compatible with the MAX42405/MAX42406 (5A to 6A) family of products.
APPLICATIONS
- Point-of-Load
- Industrial Automation
- Distributed DC Power 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 |
|---|---|---|---|
| MAX42408AFOA+ | LFCSP | ||
| MAX42408AFOA+T | LFCSP | ||
| MAX42408AFOB+ | LFCSP | ||
| MAX42408AFOB+T | LFCSP |
This is the most up-to-date revision of the Data Sheet.
Software Resources
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Request a Driver/SoftwareTools & Simulations
LTspice
Models for the following parts are available in LTspice:
- MAX42408A
- MAX42408B
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.
Learn MoreLTspice® 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 MAX42408/MAX24210