MAX26404
PRODUCTION36V, 4A/5A/6A, Fully-Integrated Synchronous Silent Switcher Buck
- Part Models
- 5
- 1ku List Price
- Starting From $1.67
Overview
- Silent Switcher Converter
- Enables Compact, Efficient, Low-EMI Solution
- Spread-Spectrum Frequency Modulation
- Symmetrical Package Offers Superior EMI Performance
- Multiple Functions for Small Size
- Operating VIN Range of 3V to 36V
- 10μA Quiescent Current in Skip Mode
- Synchronous DC-DC Converter with IntegratedFETs
- 400kHz and 2.1MHz Fixed-Frequency Options
- Fixed 2.5ms Internal Soft-Start
- Programmable 0.8V to 10V Output, or Fixed-Output Voltages of 3.3V and 5.0V
- Other Fixed-Output Options Available between2.9V to 6V in 100mV Steps
- 3.5mm x 3.75mm, 17-Pin FC2QFN
- Dual-Phase Capability
- Can Be Used in Dual-Phase Configuration forHigh-Power Design
- Dynamic Current Sharing through Shared VEA Pin
- Low-IQ Operation Capability in Dual Phase
- High Precision
- ±1% Output-Voltage Accuracy in FPWM Mode at No Load
- Precise Output Voltage Monitoring with PGOOD
- Robust for the Environment
- Forced-PWM and Skip-Mode Operation
- 99% Duty-Cycle Operation with Low Dropout
- Overtemperature and Short-Circuit Protection
- -40°C to +125°C Operating Temperature Range
The MAX26404/MAX26405/MAX26406 ICs are tiny, low EMI emission, synchronous Silent Switcher® buck converters with integrated high-side and low-side switches. The ICs are designed to deliver up to 6A with wide-input voltages range from 3V to 36V. Voltage quality can be monitored by observing the PGOOD signal. The MAX26404/MAX26405/MAX26406 can operate in dropout by running at 99% duty cycle, which makes it ideal for automotive and industrial applications.
The MAX26404/MAX26405/MAX26406 offer programmable or fixed output voltages of 5V and 3.3V. Frequency is internally fixed at 2.1MHz (or 400kHz), which allows for small external components, reduced output ripple, and guarantees no AM interference. The MAX26404/MAX26405/MAX26406 automatically enter skip mode at light loads with ultra-low quiescent current of 10μA at no load. This family of products (including the MAX26408/MAX26410) offers a pin-to-pin compatible offering from 4A to 10A in a single-phase configuration, and up to 20A in a dual-phase configuration. These devices are also optimized for dual-phase operation with very high-current sharing accuracy. These devices can be ordered with spread-spectrum frequency modulation designed to minimize EMI-radiated emissions due to the modulation frequency.
The MAX26404/MAX26405/MAX26406 are available in a small 3.5mm x 3.75mm, 17-pin FC2QFN package and use very few external components.
APPLICATIONS
- Point-of-Load Power Supplies
- 12V/24V Industrial Applications
- Telecom, Servers, and Networking Equipment
Documentation
Data Sheet 1
User Guide 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 |
|---|---|---|---|
| MAX26404AFOAY+ | LFCSP | ||
| MAX26404AFOAY+T | LFCSP | ||
| MAX26404AFOBY+T | LFCSP | ||
| MAX26404AFOCY+T | LFCSP | ||
| MAX26404AFODY+T | LFCSP |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Jun 27, 2025 - 2426C MECHANICAL DATASHEET |
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| MAX26404AFOAY+ | PRODUCTION | |
| MAX26404AFOAY+T | PRODUCTION | |
| MAX26404AFOBY+T | PRODUCTION | |
| MAX26404AFOCY+T | PRODUCTION | |
| MAX26404AFODY+T | PRODUCTION | |
|
Apr 20, 2026 - 2571E PIN/ERRATA |
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| MAX26404AFOAY+T | PRODUCTION | |
| MAX26404AFOBY+T | PRODUCTION | |
| MAX26404AFOCY+T | PRODUCTION | |
| MAX26404AFODY+T | 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 |
|---|---|---|
| LT8615 | RECOMMENDED FOR NEW DESIGNS | 42V, 3.5A Synchronous Step-down Regulator with 2.5μA Quiescent Current |
Evaluation Kits
Evaluates MAX26404/MAX26405/MAX26406