MAX20408E
PRODUCTIONAutomotive 36V, 8A/10A Fully Integrated Buck Converters with 10μA Quiescent Current and Dual-Phase Capability
- Part Models
- 4
- 1ku List Price
- price unavailable
Overview
- High-Power DC/DC Converter in Small Solution Size
- 3.0V to 36V Operating Input Voltage Range
- Integrated High-Side and Low-Side FETs
- 8A/10A Maximum Output Current
- 400kHz and 2.1MHz Fixed Frequency Options
- Fixed 2.5ms Soft-Start Time
- 34ns Minimum On Time
- Programmable 0.8V to 10V Output or Fixed Output Options
- ±1% Output Voltage Accuracy (MAX20408E/MAX20410E)
- Symmetric and Balanced SUP and PGND Pinout Placement for Superior EMI Performance
- Thermally-Enhanced 3.5mm x 3.75mm, 17-Pin FC2QFN Package
- High Efficiency at All Load Range
- 10μA Quiescent Current in Skip Mode
- Up to 94.3% Efficiency at 12VIN/5VOUT/2.1MHz
- Up to 95.6% Efficiency at 12VIN/5VOUT/400kHz
- Dual-Phase Operation up to 20A Load Capability
- Frequency Synchronization Input/Output
- 180º Out-of-Phase Between Master and Slave
- Dynamic Current Sharing
- Robust for Automotive Environment
- FPWM and Skip-Mode Operation
- 99% Duty Cycle Operation with Low DropoutVoltage
- Supports 42V Load Dump
- Spread-Spectrum Option
- Power Good Indicator
- Overtemperature and Short-Circuit Protection
- -40°C to +125°C Automotive Temperature Range
- AEC-Q100 Qualified
- Scalable Power Solution
- Footprint Compatible with MAX20404/MAX20405/MAX20406
The MAX20408/MAX20410 ICs are tiny synchronous buck converters with integrated high-side and low-side switches. The ICs are designed to deliver up to 8A/10A with wide input voltages range from 3V to 36V. Voltage quality can be monitored by observing the PGOOD signal. The MAX20408/MAX20410 can operate in dropout by running at 99% duty cycle making it ideal for automotive and industrial applications.
The MAX20408/MAX20410 offers programmable or fixed 3.3V/5V output voltage options. High switching frequency at 2.1MHz and 400kHz options allows for small external components, reduced output ripple, and guarantees no AM interference. FSYNC input programmability enables three modes for optimized performance: forced-PWM (FPWM) mode, ski mode with ultra-low quiescent current, and synchronization to an external clock. The spread spectrum option minimizes EMI radiated emissions.
The MAX20408/MAX20410 also comes with dual phase capability allowing up to 20A designs. Two ICs can be configured as a master and a slave with dynamic current sharing and 180° out-of-phase operation.
The MAX20408/MAX20410 is available in a small 3.5mm x 3.75mm 17-pin FC2QFN package. The FC2QFN package is pin-to-pin compatible with the MAX20404/MAX20405/MAX20406 (4A to 6A) family of products.
Applications
- Automotive ADAS and other safety critical applications
- Automotive High Power Sensor Fusion
- Automotive Infotainment Systems
- Distributed DC Power Systems
- Navigation and Radio Head Units
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 |
|---|---|---|---|
| MAX20408EAFLB/VY+ | 15-Lead FC2QFN (3.5mm x 3.75mm x 0.75mm) | ||
| MAX20408EAFLB/VY+T | 15-Lead FC2QFN (3.5mm x 3.75mm x 0.75mm) | ||
| MAX20408EAFOD/VY+ | 17L FC2QFN 3.5x3.75x0.75 | ||
| MAX20408EAFOD/VY+T | 17L FC2QFN 3.5x3.75x0.75 |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Jun 27, 2025 - 2426A MECHANICAL DATASHEET |
||
| MAX20408EAFOD/VY+ | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Software Resources
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LTspice
Models for the following parts are available in LTspice:
- MAX20408
LTpowerCAD
Design tools for the following parts are available in LTpowerCAD:
- MAX20408
LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.
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